Abstract
ROBERTSON1, in an interesting note to NATURE, recently pointed out the probable existence of the Bernal-Megaw hydroxyl bond2 in resorcinol. Further evidence of the existence of such a bond is to be found in a previous paper by E. Ott and the author3 on the X-ray study of the n-aliphatic alcohols. It was found that in the -modification ( = 90°) the distance between hydroxyl groups projected on the c-axis is 1.46 A. If a close packing of the hydroxyl heads is assumed, the centres of the OH groups are then found to be separated by a distance of 3.13 A. The value of a0 = 4.76 A. given by Bernal4 is used in this calculation. The distance 3.13 A. is less than the ordinary approach between aliphatic chains, and compares favourably with the examples given by Bernal and Megaw in their discussion of the hydroxyl bond.
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References
NATURE, 136, 755 (1935).
Proc. Roy. Soc., A, 151, 384 (1935).
J. Chem. Phys., 2, 239 (1934).
Z. Krist., 83, 153 (1932).
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WILSON, D. The Hydroxyl Bond in n-Aliphatic Alcohols. Nature 137, 617–618 (1936). https://doi.org/10.1038/137617b0
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DOI: https://doi.org/10.1038/137617b0
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