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London dispersion forces in sterically crowded inorganic and organometallic molecules

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Abstract

London dispersion forces are the weakest component of Van der Waals interactions. They arise from attractions between instantaneously induced dipoles on neighbouring atoms. Their relative weakness, in particular for light atoms, such as hydrogen, has led to their importance being largely ignored in discussions of molecular stability and reactivity. This Review highlights the influence of these attractive forces ā€” usually between Cā€“H moieties in ancillary ligands ā€” on the physical and chemical properties of organometallic and inorganic molecules. We feature recent examples of organic species that have informed current thinking and follow with a discussion of several prominent inorganic and organometallic complexes wherein dispersion forces have been explicitly identified or calculated. These forces strongly influence the behaviour of such complexes and often have a defining structural role. Attention is also drawn to several compounds in which significant attractive dispersion forces are probably present but have not been investigated.

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Figure 1: Examples of large, sterically crowded organic and inorganic substituents.
Figure 2: Timeline of the relevant advances in the study of London dispersion forces in organic and inorganic compounds.
Figure 3: London dispersion force effects in organic molecules.
Figure 4: London dispersion force effects in superilyl and related groups.
Figure 5: London dispersion force effects on molecules with multiple bonds between main group elements.
Figure 6: London dispersion force effects in transition and lanthanide metal complexes.

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References

  1. Tang, K.-T. & Toennies, J. P. Johannes Diderik van der Waals: a pioneer in the molecular sciences and nobel prize winner in 1910. Angew. Chem. Int. Ed. 49, 9574ā€“9579 (2010).

    ArticleĀ  CASĀ  Google ScholarĀ 

  2. London, F. Zur Theorie und Systematik der MolekularkrƤfte. Z. Physik. 63, 245 (1930); English translation available in London, F. The general theory of molecular forces. Trans. Faraday Soc. 33, 8bā€“26 (1937).

    ArticleĀ  Google ScholarĀ 

  3. Parsegian, V. A. in Van der Waals Forces: A Handbook for Biologists, Chemists, Engineers, and Physicists (Cambridge Univ. Press, 2005).

    BookĀ  Google ScholarĀ 

  4. Eisenschitz, R. & London, F. Ɯber das VerhƤltnis der van der Waalsschen KrƤfte zu den homƶopolaren BindungskrƤften. Z. Phys. 60, 491ā€“527 (in German) (1930).

    ArticleĀ  CASĀ  Google ScholarĀ 

  5. Pace, N. C., Scholtz, J. M. & Grimsley, G. R. Forces stabilizing proteins. FEBS Lett. 588, 2177ā€“2184 (2014).

    ArticleĀ  PubMed CentralĀ  CASĀ  Google ScholarĀ 

  6. Biedermann, F. & Schneider, H.-J. Experimental binding energies in supramolecular complexes. Chem. Rev. 116, 5216ā€“5300 (2016).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  7. Mosher, H. S. & Tidwell, T. T. Frank C. Whitmore and steric hindrance: a duo of centennials. J. Chem. Educ. 67, 9ā€“14 (1990).

    ArticleĀ  CASĀ  Google ScholarĀ 

  8. Newman, M. S. Steric Effects in Organic Chemistry (Wiley, 1956).

    Google ScholarĀ 

  9. Power, P. P. Some highlights from the development and use of bulky monodentate ligands. J. Organomet. Chem. 689, 3904ā€“3919 (2004).

    ArticleĀ  CASĀ  Google ScholarĀ 

  10. Clyburne, J. A. C. & McMullen, N. Unusual structures of main group organometallic compounds containing m-terphenyl ligands. Coord. Chem. Rev. 210, 73ā€“99 (2000).

    ArticleĀ  CASĀ  Google ScholarĀ 

  11. Twamley, B., Haubrich, S. T. & Power, P. P. in Advances in Organometallic Chemistry Vol. 44 1ā€“65 (Academic Press, 1999).

    Google ScholarĀ 

  12. Ni, C. & Power, P. P. in Metalā€“Metal Bonding Vol. 136 (ed. Parkin, G. ) 59ā€“111 (Springer, 2010).

    BookĀ  Google ScholarĀ 

  13. Arduengo, A. J. III Looking for stable carbenes: the difficulty in starting anew. Acc. Chem. Res. 32, 913ā€“921 (1999).

    ArticleĀ  CASĀ  Google ScholarĀ 

  14. Bourissou, D., Guerret, O., Gabbai, F. P. & Bertrand, G. Stable carbenes. Chem. Rev. 100, 39ā€“92 (2000).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  15. Valente, C. et al. Complexes for the most-challenging cross-coupling reactions. Angew. Chem. Int. Ed. 51, 3314ā€“3332 (2012).

    ArticleĀ  CASĀ  Google ScholarĀ 

  16. Scott, N. M. & Nolan, S. P. Stabilization of organometallic species achieved by the use of N-heterocyclic carbene (NHC) ligands. Eur. J. Inorg. Chem. 18, 5ā€“1828 (2005).

    Google ScholarĀ 

  17. Asay, M., Jones, C. & Driess, M. N-Heterocyclic carbene analogues with low-valent group 13 and group 14 elements: syntheses, structures, and reactivities of a new generation of multitalented ligands. Chem. Rev. 111, 354ā€“396 (2011).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  18. Jones, C. Bulky guanidinates for the stabilization of low oxidation state metallacycles. Coord. Chem. Rev. 254, 1273ā€“1289 (2010).

    ArticleĀ  CASĀ  Google ScholarĀ 

  19. Edelmann, F. T. in Advances in Organometallic Chemistry Vol. 57 (eds hill, F. E. & Fink, M. J. ) 183ā€“352 (Academic Press, 2008).

    Google ScholarĀ 

  20. Mindiola, D. J., Holland, P. L. & Warren, T. H. in Inorganic Syntheses (ed. Rauchfuss, T. B. ) (Wiley, 2010).

    Google ScholarĀ 

  21. Bourget-Merle, L., Lappert, M. F. & Severin, J. R. The chemistry of Ī²-diketiminatometal complexes. Chem. Rev. 102, 3031ā€“3066 (2002).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  22. Schreiner, P. R. et al. Overcoming lability of extremely long alkane carbonā€“carbon bonds through dispersion forces. Nature 477, 308ā€“311 (2011).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  23. Fokin, A. A. et al. Stable alkanes containing very long carbonā€“carbon bonds. J. Am. Chem. Soc. 134, 13641ā€“13650 (2012).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  24. Grimme, S. & Schreiner, P. R. Steric crowding can stabilize a labile molecule: solving the hexaphenylethane riddle. Angew. Chem. Int. Ed. 50, 12639ā€“12642 (2011).

    ArticleĀ  CASĀ  Google ScholarĀ 

  25. EcheverrĆ­a, J., AullĆ³n, G., Danovich, D., Shaik, S. & Alvarez, S. Dihydrogen contacts in alkanes are subtle but not faint. Nat. Chem. 3, 323ā€“330 (2011).

    ArticleĀ  PubMedĀ  CASĀ  Google ScholarĀ 

  26. Pyykkƶ, P. Strong closed-shell interactions in inorganic chemistry. Chem. Rev. 97, 597ā€“636 (1997).

    ArticleĀ  PubMedĀ  Google ScholarĀ 

  27. Brandenburg, J. G., Hocheim, M., Bredow, T. & Grimme, S. Low-cost quantum chemical methods for noncovalent interactions. J. Phys. Chem. Lett. 5, 4275ā€“4284 (2014).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  28. Fey, N., Ridgway, B. M., Jover, J., McMullin, C. L. & Harvey, J. N. Organometallic reactivity: the role of metalā€“ligand bond energies from a computational perspective. Dalton Trans. 40, 11184ā€“11191 (2011).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  29. Grimme, S. Accurate description of van der Waals complexes by density functional theory including empirical corrections. J. Comput. Chem. 25, 1463ā€“1473 (2004).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  30. Grimme, S. Semiempirical GGA-type density functional constructed with a long-range dispersion correction. J. Comput. Chem. 27, 1787ā€“1799 (2006).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  31. Alrichs, R., Penco, R. & Scoles, G. Intermolecular forces in simple systems. Chem. Phys. 19, 119ā€“130 (1977).

    ArticleĀ  Google ScholarĀ 

  32. Becke, A. D. & Johnson, E. R. A density-functional model of the dispersion interaction. J. Chem. Phys. 123, 154101 (2005).

    ArticleĀ  PubMedĀ  CASĀ  Google ScholarĀ 

  33. JurecĖ‡ka, P., CĖ‡erny, J., Hobza, P. & Salahub, D. R. Density functional theory augmented with an empirical dispersion term. Interaction energies and geometries of 80 noncovalent complexes compared with ab initio quantum mechanics calculations. J. Comput. Chem. 28, 555ā€“569 (2007).

    ArticleĀ  CASĀ  Google ScholarĀ 

  34. Zhao, Y. & Truhlar, D. G. Density functionals with broad applicability in chemistry. Acc. Chem. Res. 41, 157ā€“167 (2008).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  35. Zhao, Y. & Truhlar, D. G. Applications and validations of the Minnesota density functionals. Chem. Phys. Lett. 502, 1ā€“13 (2011).

    ArticleĀ  CASĀ  Google ScholarĀ 

  36. Johnson, E. R. & Becke, A. D. Van der Waals interactions from the exchange hole dipole moment: application to bio-organic benchmark systems. J. Chem. Phys. Lett. 432, 600ā€“603 (2006).

    ArticleĀ  CASĀ  Google ScholarĀ 

  37. Becke, A. D. & Johnson, E. R. A unified density-functional treatment of dynamical, nondynamical, and dispersion correlations. J. Chem. Phys. 127, 124108 (2007).

    ArticleĀ  PubMedĀ  CASĀ  Google ScholarĀ 

  38. Ruszinsky, A., Perdew, J. P. & Csonka, G. J. A simple but fully nonlocal correction to the random phase approximation. J. Chem. Phys. 134, 114110 (2011).

    ArticleĀ  CASĀ  Google ScholarĀ 

  39. Eshuis, H., Yarkony, J. & Furche, F. Fast computation of molecular random phase approximation correlation energies using resolution of the identity and imaginary frequency integration. J. Chem. Phys. 132, 234114 (2010).

    ArticleĀ  PubMedĀ  CASĀ  Google ScholarĀ 

  40. Furche, F. & Perdew, J. P. The performance of semilocal and hybrid density functionals in 3d transition-metal chemistry. J. Chem. Phys. 124, 044103 (2006).

    ArticleĀ  PubMedĀ  CASĀ  Google ScholarĀ 

  41. JimĆ©nez-Hoyos, C. A., Janesko, B. G. & Scuseria, G. E. Evaluation of range-separated hybrid and other density functional approaches on test sets relevant for transition metal-based homogeneous catalysts. J. Phys. Chem. A. 113, 11742ā€“11749 (2009).

    ArticleĀ  PubMedĀ  CASĀ  Google ScholarĀ 

  42. Ryde, U., Mata, R. A. & Grimme, S. Does DFT-D estimate accurate energies for the binding of ligands to metal complexes? Dalton Trans. 40, 11176ā€“11183 (2011).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  43. Swart, M., SolĆ”, M. & Bickelhaupt, F. M. Inter- and intramolecular dispersion interactions. J. Comput. Chem. 32, 1117ā€“1127 (2011).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  44. Yang, L., Adam, C., Nichol, G. S. & Cockroft, S. L. How much do van der Waals dispersion forces contribute to molecular recognition in solution? Nat. Chem. 5, 1006ā€“1010 (2013).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  45. Hansen, A. et al. The thermochemistry of london dispersion-driven transition metal reactions: getting the ā€˜right answer for the right reasonā€™. ChemistryOpen 3, 177ā€“189 (2014).

    ArticleĀ  CASĀ  PubMedĀ  PubMed CentralĀ  Google ScholarĀ 

  46. Kronik, L. & Tkatchenko, A. Understanding molecular crystals with dispersion-inclusive density functional theory: pairwise corrections and beyond. Acc. Chem. Res. 47, 3208ā€“3216 (2014).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  47. Berland, K. et al. I. van der Waals forces in density functional theory: a review of the vdW-DF method. Rep. Prog. Phys. 78, 066501 (2015).

    ArticleĀ  PubMedĀ  CASĀ  Google ScholarĀ 

  48. Grimme, S. in The Chemical Bond: Chemical Bonding Across the Periodic Table (eds Frenking, G. & Shaik, S. ) 477ā€“500 (Wiley, 2014).

    Google ScholarĀ 

  49. Grimme, S., Hansen, A., Brandenburg, J. G. & Bannwarth, C. Dispersion-corrected mean-field electronic structure methods. Chem. Rev. 116, 5105ā€“5154 (2016).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  50. Bondi, A. Van der Waals volumes and radii. J. Phys. Chem. 68, 441ā€“451 (1964).

    ArticleĀ  CASĀ  Google ScholarĀ 

  51. Gomberg, M. Triphenylmethyl, ein Fall von dreiwerthigem Kohlenstoff. Ber. Dtsch. Chem. Ges. 33, 3150ā€“3163 (in German) (1900).

    ArticleĀ  CASĀ  Google ScholarĀ 

  52. Gomberg, M. An instance of trivalent carbon: triphenylmethyl. J. Am. Chem. Soc. 22, 757ā€“771 (1900).

    ArticleĀ  Google ScholarĀ 

  53. Lankamp, H., Nauta, W. Th. & MacLean, C. A new interpretation of the monomer-dimer equilibrium of triphenylmethyl- and alkylsubstituted-diphenyl methyl-radicals in solution. Tetrahedron Lett. 9, 249ā€“254 (1968).

    ArticleĀ  Google ScholarĀ 

  54. Stein, M., Winter, W. & Rieker, A. Hexakis(2,6-di-tert-butyl-4-biphenylyl)ethane ā€” the first unbridged hexaarylethane. Angew. Chem. Int. Ed. Engl. 17, 692ā€“694 (1978).

    ArticleĀ  Google ScholarĀ 

  55. Kahr, B., van Engen, D. & Mislow, K. Length of the ethane bond in hexaphenylethane and its derivatives. J. Am. Chem. Soc. 108, 8305ā€“8307 (1986).

    ArticleĀ  CASĀ  Google ScholarĀ 

  56. Wagner, J. P. & Schreiner, P. R. London dispersion in molecular chemistry ā€” reconsidering steric effects. Angew. Chem. Int. Ed. 54, 12274ā€“12296 (2016).

    ArticleĀ  CASĀ  Google ScholarĀ 

  57. Schwertfeger, H., Fokin, A. A. & Schreiner, P. R. Diamonds are a chemist's best friend: diamondoid chemistry beyond adamantane. Angew. Chem. Int. Ed. 47, 1022ā€“1036 (2008).

    ArticleĀ  CASĀ  Google ScholarĀ 

  58. Maier, G., Pfriem, S., SchƤfer, R. & Mausch, R. Tetra-tert-butyltetrahedrane. Angew. Chem. Int. Ed. 17, 520ā€“521 (1978).

    ArticleĀ  Google ScholarĀ 

  59. Balci, M., McKee, M. & Schleyer, P. v. R. Theoretical study of tetramethyl- and tetra-tert-butyl-substituted cyclobutadiene and tetrahedrane. J. Phys. Chem. 104, 1246ā€“1255 (2000).

    ArticleĀ  CASĀ  Google ScholarĀ 

  60. Monteiro, N. K. V., de Oliveira, J. F. & Firme, C. L. Stability and electronic structures of substituted tetrahedranes, silicon and germanium parents ā€” a DFT, ADMP, QTAIM and GVB study. New. J. Chem. 38, 5892ā€“5904 (2014).

    ArticleĀ  CASĀ  Google ScholarĀ 

  61. Nemirowski, A., Reisenauer, H. P. & Schreiner, P. R. Tetrahedrane ā€” dossier of an unknown. Chem. Eur. J. 12, 7411ā€“7420 (2006).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  62. Wiberg, N. Sterically overloaded supersilylated main group elements and main group element clusters. Coord. Chem. Rev. 163, 217ā€“252 (1997).

    ArticleĀ  CASĀ  Google ScholarĀ 

  63. SchƤfer, A., Weidenbruch, M., Peters, K. & von Schnering, H. Hexa-tert-butylcyclotrisilane, a strained molecule with unusually long Siā€“Si and Siā€“C bonds. Angew. Chem. Int. Ed. 23, 302ā€“303 (1984).

    ArticleĀ  Google ScholarĀ 

  64. Wiberg, N., Schuster, A., Simon, A. & Peters, K. Hexa-tert-butyldisilane ā€” the molecule with the longest Siā€“Si bond. Angew. Chem. Int. Ed. 25, 79ā€“80 (1986).

    ArticleĀ  Google ScholarĀ 

  65. Pyykkƶ, P. & Atsumi, M. Molecular single-bond covalent radii for elements 1ā€“118. Chem. Eur. J. 15, 186ā€“197 (2008).

    ArticleĀ  CASĀ  Google ScholarĀ 

  66. Pauling, L. Nature of the Chemical Bond 239 (Cornell Univ. Press, 1960).

    Google ScholarĀ 

  67. Paolini, J. P. The bond orderā€“bond length relationship. J. Comput. Chem. 11, 1160ā€“1163 (1990).

    ArticleĀ  CASĀ  Google ScholarĀ 

  68. Bock, H., Meuret, J. & Ruppert, K. Sterically overcrowded or charge perturbed molecules: XXIII. Hexakis(trimethylsilyl)disilane: structure and photoelectron spectrum of a sterically overcrowded molecule. J. Organomet. Chem. 445, 19ā€“28 (1993).

    ArticleĀ  CASĀ  Google ScholarĀ 

  69. Weidenbruch, M. et al. Hexa-t-butyldigerman und Hexa-t-butylcyclotrigerman: molekĆ¼le mit den derzeit lƤngsten Geā€“Geāˆ’ und Geā€“C-Bindungen. J. Organomet. Chem. 341, 335ā€“343 (in German) (1988).

    ArticleĀ  CASĀ  Google ScholarĀ 

  70. Puff, H. et al. BindungsabstƤnde zwischen organylsubstituierten Zinnatomen: III. Offenkettige Verbindungen. J. Organomet. Chem. 363, 265ā€“280 (in German) (1989).

    ArticleĀ  CASĀ  Google ScholarĀ 

  71. Wiberg, N. et al. Tetrasupersilyl-tristannaallene and -tristannacyclopropene (tBu3Si)4Sn3 ā€” isomers with the shortest S=Sn double bonds to date. Eur. J. Inorg. Chem. 1999, 1211ā€“1218 (1999).

    ArticleĀ  Google ScholarĀ 

  72. Peng, Y. et al. Substituent effects in ditetrel alkyne analogues: multiple versus single bonded isomers. Chem. Sci. 1, 461ā€“468 (2010).

    ArticleĀ  CASĀ  Google ScholarĀ 

  73. Wiberg, N., Amelunxen, K., Blank, T., Nƶth, H. & Knizek, J. Tetrasupersilyldialuminum [(t-Bu)3Si]2Alā€“Al[Si(t-Bu)3]2: the dialane(4) with the longest Alā€“Al bond to date. J. Organometallics 17, 5431ā€“5433 (1998).

    ArticleĀ  CASĀ  Google ScholarĀ 

  74. Uhl, W. Tetrakis[bis(trimethylsilyl)methyl]dialan(4), eine Verbindung mit Aluminiumā€“Aluminium-Bindung. Z. Naturforsch. B 43, 1113ā€“1118 (in German) (1988).

    ArticleĀ  CASĀ  Google ScholarĀ 

  75. Wehmschulte, R. J. et al. Reduction of a tetraaryldialane to generate Alā€“Al Ļ€-bonding. Inorg. Chem. 32, 2983ā€“2984 (1993).

    ArticleĀ  CASĀ  Google ScholarĀ 

  76. Wiberg, N. et al. Ditrielanes (R3Si)2Eā€“E(SiR3)2 and heterocubanes (R3Si)4E4Y4 (R3Si = tBu3Si, tBu2PhSi; E = Al, Ga, In, Tl; Y = O, Se). Eur. J. Inorg. Chem. 341ā€“350 (2002).

    ArticleĀ  Google ScholarĀ 

  77. Wiberg, N. et al. Tris(tri-tert-butylsilyl)digallanyl (tBu3Si)3Ga2: a new type of compound for a heavy group 13 element. Angew. Chem. Int. Ed. 36, 1213ā€“1215 (1997).

    ArticleĀ  CASĀ  Google ScholarĀ 

  78. Power, P. P. Ļ€-Bonding and the lone pair effect in multiple bonds between heavier main group elements. Chem. Rev. 99, 3463ā€“3503 (1999).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  79. Fischer, R. C. & Power, P. P. Ļ€-Bonding and the lone pair effect in multiple bonds involving heavier main group elements: developments in the new millennium. Chem. Rev. 110, 3877ā€“3923 (2010).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  80. Arp, H., Baumgartner, J., Marschner, C., Zark, P. & MĆ¼ller, T. Dispersion energy enforced dimerization of a cyclic disilylated plumbylene. J. Am. Chem. Soc. 134, 6409ā€“6415 (2012).

    ArticleĀ  CASĀ  PubMedĀ  PubMed CentralĀ  Google ScholarĀ 

  81. Weidenbruch, M., Kilian, H., Peters, K., von Schnering, H. G. & Marsmann, H. Compounds of germanium and tin, 16. A tetraaryldistannene with a long tinā€“tin multiple bond and differing environments at the tin atoms. Chem. Ber. 128, 983ā€“985 (1995).

    ArticleĀ  CASĀ  Google ScholarĀ 

  82. Guo, J.-D., Liptrot, D. J., Nagase, S. & Power, P. P. The multiple bonding in heavier group 14 element alkene analogues is stabilized mainly by dispersion force effects. Chem. Sci. 6, 6235ā€“6244 (2015).

    ArticleĀ  CASĀ  PubMedĀ  PubMed CentralĀ  Google ScholarĀ 

  83. Lee, V. Ya. et al. (tBu2MeSi)2SnSn(SiMetBu2)2: a distannene with a > Sn=Sn < double bond that is stable both in the solid state and in solution. J. Am. Chem. Soc. 128, 11643ā€“11651 (2006).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  84. Guo, J.-D., Nagase, S. & Power, P. P. Dispersion force effects on the dissociation of ā€˜Jack-in-the-boxā€™ diphosphanes and diarsanes. Organometallics 34, 2028ā€“2033 (2015).

    ArticleĀ  CASĀ  Google ScholarĀ 

  85. Hinchley, S. L. et al. Spontaneous generation of stable pnictinyl radicals from ā€˜Jack-in-the-boxā€™ dipnictines: a solid-state, gas-phase, and theoretical investigation of the origins of steric Stabilization. J. Am. Chem. Soc. 123, 9045ā€“9053 (2001).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  86. Seidu, I., Seth, M. & Ziegler, T. Role played by isopropyl substituents in stabilizing the putative triple bond in Arā€²EEArā€²[E = Si, Ge, Sn; Arā€² = C6H3-2,6-(C6H3-2,6-Pri2)2] and Ar*PbPbAr* [Ar* = C6H3-2,6-(C6H2-2,4,6-Pri3)2]. Inorg. Chem. 52, 8378ā€“8388 (2013).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  87. Stender, M., Phillips, A. D., Wright, R. J. & Power, P. P. Synthesis and characterization of a digermanium analogue of an alkyne. Angew. Chem. Int. Ed. 41, 1785ā€“1787 (2002).

    ArticleĀ  CASĀ  Google ScholarĀ 

  88. Phillips, A. D., Wright, R. J., Olmstead, M. M. & Power, P. P. Synthesis and characterization of 2,6-Dipp2-H3C6SnSnC6H3-2,6-Dipp2 (Dipp = C6H3-2,6-Pri2): a tin analogue of an alkyne. J. Am. Chem. Soc. 124, 5930ā€“5931 (2002).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  89. Pu, L., Twamley, B. & Power, P. P. Synthesis and characterization of 2,6-Trip2H3C6PbPbC6H3-2,6-Trip2 (Trip = C6H2-2,4,6-i-Pr3): a stable heavier group 14 element analogue of an alkyne. J. Am. Chem. Soc. 122, 3524ā€“3525 (2000).

    ArticleĀ  CASĀ  Google ScholarĀ 

  90. Mitoraj, M., Michalak, A. & Ziegler, T. A. Combined charge and energy decomposition scheme for bond analysis. J. Chem. Theor. Comput. 5, 962ā€“975 (2009).

    ArticleĀ  CASĀ  Google ScholarĀ 

  91. Wu, L.-C., Jones, C., Stasch, A., Platts, J. A. & Overgaard, J. Non-nuclear attractor in a molecular compound under external pressure. Eur. J. Inorg. Chem. 32, 5536ā€“5540 (2014).

    ArticleĀ  CASĀ  Google ScholarĀ 

  92. Wagner, J. P. & Schreiner, P. R. London dispersion decisively contributes to the thermodynamic stability of bulky NHC-coordinated main group compounds. J. Chem. Theor. Comp. 12, 231ā€“237 (2016).

    ArticleĀ  CASĀ  Google ScholarĀ 

  93. HƤnninen, M., Pal, K., Day, B. M., Pugh, T. & Layfield, R. A three-coordinate ironā€“silylene complex stabilized by ligandā€“ligand dispersion forces. Dalton Trans. 45, 11301ā€“11305 (2016).

    ArticleĀ  PubMedĀ  CASĀ  Google ScholarĀ 

  94. Albers, L., Rathjen, S., Baumgartner, J., Marschner, C. & MĆ¼ller, T. Dispersion-energy-driven Wagnerā€“Meerwein rearrangements in oligosilanes. J. Am. Chem. Soc. 138, 6886ā€“6892 (2016).

    ArticleĀ  CASĀ  PubMedĀ  PubMed CentralĀ  Google ScholarĀ 

  95. Andersen, R. A. et al. The molecular structures of bis(pentamethylcyclopentadienyl)-calcium and -ytterbium in the gas phase; two bent metallocenes. J. Organomet. Chem. 312, C49ā€“C52 (1986).

    ArticleĀ  CASĀ  Google ScholarĀ 

  96. Andersen, R. A., Blom, R., Boncella, J. M., Burns, C. J. & Volden, H. V. The thermal average molecular structures of bis(pentamethylcyclopentadienyl)magnesium(ii), -calcium(ii) and -ytterbium(ii) in the gas phase. Acta Chem. Scand. 41A, 24ā€“35 (1987).

    ArticleĀ  Google ScholarĀ 

  97. Andersen, R. A., Blom, R., Burns, C. J. & Volden, H. V. Synthesis and thermal average gas phase molecular structures of bis(pentamethylcyclopentadienyl)-strontium and -barium; the first organo-strontium and -barium structures. J. Chem. Soc., Chem. Commun. 768ā€“769 (1987).

  98. Blom, R., Faegri, K. Jr & Volden, H. V. Molecular structures of alkaline earth-metal metallocenes: electron diffraction and ab initio investigations. Organometallics 9, 372ā€“379 (1990).

    ArticleĀ  CASĀ  Google ScholarĀ 

  99. Williams, R. A., Hanusa, T. P. & Huffman, J. C. Structures of ionic decamethylmetallocenes: crystallographic characterization of bis(pentamethylcyclopentadienyl)calcium and -barium and a comparison with related organolanthanide species. Organometallics 9, 1128ā€“1134 (1990).

    ArticleĀ  CASĀ  Google ScholarĀ 

  100. Hollis, T. K., Burdett, J. K. & Bosnich, B. Why are bis(pentamethylcyclopentadienyl) complexes, [MCp2*], of calcium, strontium, barium, samarium, europium, and ytterbium bent? Organometallics 12, 3385ā€“3386 (1993).

    ArticleĀ  CASĀ  Google ScholarĀ 

  101. Timofeeva, T. V., Lii, J.-H. & Allinger, N. L. Molecular mechanics explanation of the metallocene bent sandwich structure. J. Am. Chem. Soc. 117, 7452ā€“7459 (1995).

    ArticleĀ  CASĀ  Google ScholarĀ 

  102. Rekken, B.-D. et al. Dispersion forces and counterintuitive steric effects in main group molecules: heavier group 14 (Siā€“Pb) dichalcogenolate carbene analogues with sub-90Ā° interligand bond angles. J. Am. Chem. Soc. 135, 10134 (2013).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  103. Eaborn, C. & Smith, J. D. Organometallic compounds containing tris(trimethylsilyl)methyl or related ligands. J. Chem. Soc., Dalton Trans. 1541ā€“1552 (2001).

  104. Eaborn, C., Hitchcock, P. B., Smith, J. D. & Sullivan, A. C. Crystal structure of the tetrahydrofuran adduct of tris(trimethylsilyl)-methyl-lithium, [Li(thf)4][Li{C(SiMe3)3}2], an ate derivative of lithium. J. Chem. Soc., Chem. Commun. 827ā€“828 (1983).

  105. Buttrus, N. H. et al. The crystal structure of [(pmdeta)Li(Ī¼-Cl)Li(pmdeta)][Li{C(SiMe3)3}2] [pmdeta = Me2N(CH2)2NMe(CH2)2NMe2]. A novel linear chlorine-centred cation. J. Chem. Soc., Chem. Commun. 969ā€“970 (1986).

  106. Al-Juaid, S. S. et al. Metalation of tris(trimethylsilyl)- and tris(dimethylphenylsilyl)methane with methylsodium: the first dialkylsodate. Angew. Chem. Int. Ed. 33, 1268ā€“1270 (1994).

    ArticleĀ  Google ScholarĀ 

  107. Al-Juaid, S. S. et al. Crystal structures of organometallic compounds of lithium and magnesium containing the bulky ligands C(SiMe3)2(SiMe2X) X = Me, Ph, NMe2, or C5H4N-2. J. Organomet. Chem. 631, 76ā€“86 (2001).

    ArticleĀ  CASĀ  Google ScholarĀ 

  108. Eaborn, C., Hitchcock, P. B., Smith, J. D. & Sullivan, A. C. A novel monomeric alkylā€“lithium compound. Crystal structure of [Li{C(SiMe2Ph)3}(tetrahydrofuran)]. J. Chem. Soc., Chem. Commun. 1390ā€“1391 (1983).

  109. Eaborn, C., Hitchcock, P. B., Smith, J. D. & Sullivan, A. C. Preparation and crystal structure of the tetrahydrofuran adduct of lithium bis [tris(trimethylsilyl)methyl]cuprate, [Li(THF)4] [Cu{C(SiMe3)3}2]. The first structural characterization of a Gilman reagent. J. Organomet. Chem. 263, c23ā€“c25 (1984).

    ArticleĀ  CASĀ  Google ScholarĀ 

  110. Al-Juaid, S. S., Eaborn, C., Hitchcock, P. B., McGeary, C. A. & Smith, J. D. The crystal structure of bis{tris(trimethylsilyl)methyl}magnesium: an example of two-co-ordinate magnesium in the solid state. J. Chem. Soc., Chem. Commun. 1989, 273ā€“274 (1989).

    ArticleĀ  Google ScholarĀ 

  111. Al-Juaid, S. S. et al. Preparation, crystal structure, and reactivity of bis {tris(trimethylsilyl) methyl} magnesium. J. Organomet. Chem. 480, 199ā€“203 (1994).

    ArticleĀ  CASĀ  Google ScholarĀ 

  112. Eaborn, C. & Hitchcock, P. B. The first structurally characterised solvent-free Ļ‚-bonded diorganocalcium, Ca[C(SiMe3)3]2 . Chem. Commun. 1961ā€“1962 (1997).

  113. Westerhausen, M., Rademacher, B. & Poll, W. Trimethylsilyl-substituierte Derivate des Dimethylzinks ā€” Synthese, spektroskopische Charakterisierung und Struktur. J. Organomet. Chem. 421, 175ā€“188 (in German) (1991).

  114. Eaborn, C., Jones, K. L., Smith, J. D. & Tavakkoli, K. The remarkable thermal stability of benzyl[tris(dimethylphenylsily)methyl]mercury. How can a bulky ligand stabilize an organometallic compound towards unimolecular dissociation? J. Chem. Soc., Chem. Commun. 1201ā€“1202 (1989).

  115. Al-Juaid, S. S., Eaborn, C., Lickiss, P. D., Smith, J. Davis, Tavakkoli, K. & Webb, A. D. Preparation, spectroscopic properties and thermal stabilities of organomercury compounds containing the bulky ligand (Me3Si)3C or (PhMe2Si)3C. J. Organomet. Chem. 510, 143ā€“151 (1996).

    ArticleĀ  CASĀ  Google ScholarĀ 

  116. Ghotra, J. S., Hursthouse, M. B. & Welch, A. J. Three-co-ordinate scandium(iii) and europium(iii); crystal and molecular structures of their trishexamethyldisilylamides. J. Chem. Soc., Chem. Commun. 6, 9ā€“670 (1973).

    Google ScholarĀ 

  117. Evans, W. J., Hughes, L. A. & Hanusa, T. P. Synthesis and crystallographic characterization of an unsolvated, monomeric samarium bis(pentamethylcyclopentadienyl) organolanthanide complex, (C5Me5)2Sm. J. Am. Chem. Soc. 106, 4270ā€“4272 (1984).

    ArticleĀ  CASĀ  Google ScholarĀ 

  118. Evans, W. J., Forrestal, K. J. & Ziller, J. W. Reaction chemistry of sterically crowded tris(pentamethylcyclopentadienyl)samarium. J. Am. Chem. Soc. 120, 9273ā€“9282 (1998).

    ArticleĀ  CASĀ  Google ScholarĀ 

  119. Evans, W. J., Hughes, L. A. & Hanusa, T. P. Synthesis and X-ray crystal structure of bis(pentamethylcyclopentadienyl) complexes of samarium and europium: (C5Me5)2Sm and (C5Me5)2Eu. Organometallics 5, 1285ā€“1288 (1986).

    ArticleĀ  CASĀ  Google ScholarĀ 

  120. Evans, W. J., Gonzales, S. L. & Ziller, J. W. Synthesis and X-ray crystal structure of the first tris(pentamethylcyclopentadienyl)metal complex: (Ī·5-C5Me5)3Sm. J. Am. Chem. Soc. 113, 7423ā€“7424 (1991).

    ArticleĀ  CASĀ  Google ScholarĀ 

  121. Ahlquist, M. S. G. & Norrby, P.-O. Dispersion and back-donation gives tetracoordinate [Pd(PPh3)4]. Angew. Chem. Int. Ed. 50, 11794ā€“11797 (2011).

    ArticleĀ  CASĀ  Google ScholarĀ 

  122. Lyngvi, E., Sanhueza, I. A. & Schoenebeck, F. Dispersion makes the difference: bisligated transition states found for the oxidative addition of Pd(PtBu3)2 to Ar-OSO2R and dispersion-controlled chemoselectivity in reactions with Pd[P(iPr)(tBu2)]2 . Organometallics 34, 805ā€“812 (2015).

    ArticleĀ  CASĀ  Google ScholarĀ 

  123. Maseras, F. & Eisenstein, O. Opposing steric and electronic contributions in OsCl2H2(PPr3i)2. A theoretical study of an unusual structure. New J. Chem. 22, 5ā€“9 (1998).

    ArticleĀ  CASĀ  Google ScholarĀ 

  124. Minenkov, Y., Occhipinti, G., Heyndrickx, W. & Jensen, V. R. The nature of the barrier to phosphane dissociation from grubbs olefin metathesis catalysts. Eur. J. Inorg. Chem. 1507ā€“1516 (2012).

  125. Minenkov, Y., Singstad, A., Occhipinti, G. & Jensen, V. R. The accuracy of DFT-optimized geometries of functional transition metal compounds: a validation study of catalysts for olefin metathesis and other reactions in the homogeneous phase. Dalton Trans. 41, 5526ā€“5541 (2012).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  126. Wolters, L. P., Koekkoek, R. & Bickelhaupt, F. M. Role of steric attraction and bite-angle flexibility in metal-mediated Cā€“H bond activation. ACS Catal. 5, 5766ā€“5775 (2015).

    ArticleĀ  CASĀ  Google ScholarĀ 

  127. Wolstenholme, D. J., Dobson, J. L. & McGrady, G. S. Homopolar dihydrogen bonding in main group hydrides: discovery, consequences, and applications. Dalton Trans. 44, 9718ā€“9731 (2015).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  128. Ndambuki, S. & Ziegler, T. Analysis of the putative Crā€“Cr quintuple bond in Arā€²CrCrArā€² (Arā€² = C6H3-2,6(C6H3-2,6-Pri2)2 based on the combined natural orbitals for chemical valence and extended transition state method. Inorg. Chem. 51, 7794ā€“7800 (2012).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  129. Nguyen, T. et al. Synthesis of a stable compound with fivefold bonding between two chromium(i) centers. Science 310, 844ā€“861 (2005).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  130. Power, P. P. Stable two-coordinate, open-shell (d1ā€“d9) transition metal complexes. Chem. Rev. 112, 3482ā€“3507 (2012).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  131. Wagner, C. L. et al. Dispersion-force-assisted disproportionation: a stable two-coordinate copper(ii) complex. Angew. Chem. Int. Ed. 55, 10444ā€“10447 (2016).

    ArticleĀ  CASĀ  Google ScholarĀ 

  132. Boynton, J. N. et al. Linear and nonlinear two-coordinate vanadium complexes: synthesis, characterization, and magnetic properties of V(ii) amides. J. Am. Chem. Soc. 135, 10720ā€“10728 (2013).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  133. Lin, C.-Y. et al. Dispersion force stabilized two-coordinate transition metalā€“amido complexes of the ā€“N(SiMe3)Dipp (Dipp = C6H3-2,6-Pri2) ligand: structural, spectroscopic, magnetic, and computational studies. Inorg. Chem. 52, 13584ā€“13593 (2013).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  134. Faust, M. et al. The instability of Ni{N(SiMe3)2}2: a fifty year old transition metal silylamide mystery. Angew. Chem. Int. Ed. 54, 12914ā€“12917 (2015).

    ArticleĀ  CASĀ  Google ScholarĀ 

  135. Bower, B. K. & Tennent, H. G. Transition metal bicyclo[2.2.1]hept-1-yls. J. Am. Chem. Soc. 94, 2512ā€“2518 (1972).

    ArticleĀ  CASĀ  Google ScholarĀ 

  136. Liptrot, D. J., Guo, J.-D., Nagase, S. & Power, P. P. Dispersion forces, disproportionation and stable high-valent late transition metal alkyls. Angew. Chem. Int. Ed. 55, 13655ā€“13659 (2016).

    ArticleĀ  CASĀ  Google ScholarĀ 

  137. Lewis, R. A. et al. Reactivity and Mƶssbauer spectroscopic characterization of an Fe(iv) ketimide complex and reinvestigation of an Fe(iv) norbornyl complex. Inorg. Chem. 52, 8218ā€“8227 (2013).

    ArticleĀ  CASĀ  PubMedĀ  Google ScholarĀ 

  138. Byrne, E. K. & Theopold, K. H. Redox chemistry of tetrakis(1-norbornyl)cobalt. Synthesis and characterization of a cobalt(v) alkyl and self-exchange rate of a Co(iii)/Co(iv) couple. J. Am. Chem. Soc. 193, 1282ā€“1283 (1987).

    ArticleĀ  Google ScholarĀ 

  139. Ruspic, C., Moss, J. R., SchĆ¼rmann, M. & Harder, S. Remarkable stability of metallocenes with superbulky ligands: spontaneous reduction of SmIII to Smii. Angew. Chem. Int. Ed. 47, 2121ā€“2126 (2008).

    ArticleĀ  CASĀ  Google ScholarĀ 

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Acknowledgements

The authors are grateful to the David Parkin Visiting Professorship at the University of Bath (P.P.P.), the English-Speaking Union Lindemann Trust Fellowship (D.J.L.), the US National Science Foundation (CHE-1565501) and M. Hill for his generosity, invaluable advice and support.

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Glossary

Terphenyls

In this Review, a terphenyl ligand consists of a central aryl ring substituted by two further aryl rings at the ortho (that is, flanking) positions relative to the carbon atom (ipso) through which the terphenyl ligand is attached to the reactive centre. They are denoted by the abbreviation Ar R n , where the superscript R refers to the type of substituents on the aryl rings and the numeral indicates the number of R substituents present: for example, Ar\(^{{\rm ME}_{\rm 6} } \) = C6H3-2,6-(C6H2-2,4,6-Me3)2 and Ar\(^{i{\rm -Pr}_{\rm 4} } \) = C6H3-2,6-(C6H3-2,6-iPr6)2.

Extended transition stateā€“natural orbitals for chemical valence

(ETSā€“NOCV). A scheme for the analysis of chemical bonds based on the decomposition of the bonding on the basis of charge and energy90.

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Liptrot, D., Power, P. London dispersion forces in sterically crowded inorganic and organometallic molecules. Nat Rev Chem 1, 0004 (2017). https://doi.org/10.1038/s41570-016-0004

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