Tribenzylphosphane and its hydrochloride salt, tribenzylphosphonium hydrogen dichloride-tribenzylphosphane (1/1).

doi:10.1107/S0108270113010226

Paper

Tribenzylphosphane and its hydrochloride salt, tribenzylphosphonium hydrogen dichloride-tribenzylphosphane (1/1).

Published May 15, 2013 · W. Levason, D. Pugh, G. Reid

Acta crystallographica. Section C, Crystal structure communications

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Abstract

Tribenzylphosphane, PBz3 (C21H21P), crystallizes in a notably different unit cell to its Group 15 analogues NBz3 and SbBz3. The packing is dominated by face-edge π-interactions which result in infinite columns of molecules parallel to the b axis; these columns are linked by further face-edge π-interactions into sheets of columns parallel to the [101] direction. Its hydrochloride salt, tribenzylphosphonium hydrogen dichloride-tribenzylphosphane (1/1), lies on a threefold axis within a trigonal crystal system. It exists in the solid state as a hydrogen-bridged dimer with the composition [H(PBz3)2](+)[HCl2](-) (C42H43P2(+)·HCl2(-)). The cation is the first structurally authenticated example of a phosphane acting as a hydrogen-bond acceptor to a phosphonium group and the cations are linked into a three-dimensional network through intermolecular face-edge π-interactions.

Study Snapshot

Tribenzylphosphane crystallizes in a unique unit cell and its hydrochloride salt, tribenzylphosphonium hydrogen dichloride-tribenzylphosphane (1/1), is the first structurally authenticated phosphane acting as a hydrogen-bond acceptor

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

Tribenzylphosphane and its hydrochloride salt, tribenzylphosphonium hydrogen dichloride-tribenzylphosphane (1/1).

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