Abstract
Abstract A high resolution 1HNMR study of several 4- and 5-coordinated (TBP) phosphorus compounds enabled us to determine the nature of the conformational transmission effect, which describes the influence of the phosphorus coordination on the molecular conformation. Of great use was the accurate determination of the J POMe coupling constant, with which the pseudorotational equilibrium around the pentacoordinated phosphorus can be described. It was determined that conformational transmission is purely electrostatic in origin, due to a larger charge density in the axis of the TBP structure. These findings were corroborated with quantumchemical calculations.
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