Facile Synthesis of Pentacarbonyltungsten(0) Complexes with Oxaphosphirane Ligands

Facile synthesis of tungsten(0) complexes of the type [{(RPCH)-P-1(R-2)-O)}W(CO)(5)] 7a-g (R-1 = C5Me5) and 8a-g (R-1 = CH(SiMe3)(2)) using transient Li/Cl phosphanylidenoid tungsten(0) complexes 4, 5 and carbonyl derivatives 6a-g is reported; further-more, for all complexes NMR, IR spectroscopic, mass spectrometric investigations and, in addition, single-crystal X-ray structures of complexes 7b,d-g and 8b,d are presented.