摘要:
A series of thienyl-substituted phosphirene P-W(CO)(5) complexes were synthesized by reaction of the transient terminal phosphinidene complex [Ph-P-W(CO)(5)] with the appropriate thienyl-substituted alkynes. The X-ray structural study of these complexes shows coplanar thiophene and phosphirene rings, suggesting a good inter-ring conjugation. A combined C-13 NMR-NBO analysis indicates that the C=C double bond of the phosphirene ring is highly polarizable. UV spectra show a red-shift of the absorption when converting the alkynes into the phosphirenes. CV data are also given.