An infrared study of co-ordinated BH3 and BH2 groups as proton acceptors in hydrogen bonding
- 1 January 1970
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 410-414
- https://doi.org/10.1039/j19700000410
Abstract
Boron co-ordination compounds of the type L,BH3(L = Me3N, Et3N, Py, and Et3P) and Me3N,BH2X (X = Cl, Br, and I) are shown to form hydrogen-bonded complexes with OH (MeOH, PhOH, and p-F·C6H4·OH) in carbon tetrachloride solution. These complexes appear to be formed via OH ⋯ BH3 and OH ⋯ BH2 interactions and are readily detected by the appearance of a low-frequency i.r. OH stretch. Formation of similar complexes with the more extensively halogenated amine–boranes Me3N,BHX2(X = Cl, Br, and I) and Me3N,BX3(X = F, Cl, and Br) could not be observed. Cyclotriborazanes (RNH·BH2)3 are shown to undergo self-association in solution and this is attributed to a related NH ⋯ BH2 interaction.Keywords
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