Abstract
THE complex formed by absorption of diborane in solutions of borohydride ion in polyethylene glycol ethers is of considerable interest because it probably contains the simplest B—H—B bridge system known. Brown et al.1 reported that solutions of sodium or lithium borohydride in diethylene glycol dimethyl ether absorb a half molar equivalent of diborane. On this evidence it was suggested that the diborohydride ion B2H− was present and that its structure probably contained a single B—H—B bridge. Baker et al.2 report a similar reaction on electrolysis of a solution of sodium borohydride in diethylene glycol dimethyl ether : Several attempts1,2 have been made to prepare the salt in a pure form but so far it has not been possible to prepare a salt with lessthan one molecule of solvent per molecule of the salt2.
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DUKE, B., HOWARTH, O. & KENWORTHY, J. Nuclear Magnetic Resonance Evidence for the Diborohydride Ion in Polyethylene Glycol Ethers. Nature 202, 81 (1964). https://doi.org/10.1038/202081a0
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DOI: https://doi.org/10.1038/202081a0
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