CHEMISTRY OF 2H-AZAPHOSPHIRENE COMPLEXES, 8 - SYNTHESIS AND SPECTROSCOPIC DATA OF PARASUBSTITUTED (3-PHENYL-2H-AZAPHOSPHIRENE)TUNGSTEN COMPLEXES

High-yield synthesis of para-substituted pentacarbonyl(3-phenyl-2H-aza phosphirene)tungsten complexes is reported, using a multi-step rearran gement reaction. Spectroscopic and mass-spectrometric data of these he terocyclic complexes are discussed; the P-31-NMR-chemical shifts clear ly reflect the electronic influence of the para-phenyl substituents an d the correlation with Hammett op-constants is almost linear.