Characterising secondary bonding interactions within triaryl organoantimony(V) and organobismuth(V) complexes
Abstract
The thermodynamically preferred conformations of the five-co-ordinate trigonal-bipyramidal complexes SbPh3Cl21 and BiPh3Cl2 2, determined via van der Waals energy calculations, have been found to be in good agreement with the corresponding correlated propeller arrangements which are observed in the solid state. However, similar calculations upon the corresponding ⋯
O
C interaction. The complexes 3a,3b and 4a,4b were prepared in order to probe the effect of strong intramolecular hydrogen bonding upon the ability of
⋯
O
C interaction is achieved via strong intramolecular hydrogen bonding, sterically disfavoured arrangements predominate in the solid state.