Study of the planarization of the tricordinate phosphorus in phospholes; Photoelectron spectra and structure of partially planarized phospholes

Article abstract of DOI:10.1016/S0022-328X(98)00685-8

The gradual flattening of the tricoordinate phosphorus in phosphole by the increasing steric bulk of the substituent group is shown on the HF/6-31G* optimized geometries of alkylarylphospholes. By the decreasing pyramidality, aromaticity indices show incr