Novel phosphaalkyne/benzoyldiazenido ligand coupling forming the first η2-phosphidocarbene complex. Synthesis and molecular structure of [ReCl2{η4-N(NCOPh)PCButPCBut}(PPh3)]
Abstract
Treatment of [ReCl2(NNCOPh)(PPh3)2] with PCBut, in benzene, affords [ReCl2(NNCOPh)(PCBut)(PPh3)2] and subsequently through an unprecedented phosphaalkyne/hydrazido coupling, [ReCl2{η4-N(NCOPh)PCButPCBut}(PPh3)], the structure of which, authenticated by an X-ray diffraction analysis, contains the novel η2-phosphidocarbene ReC(But)P– fragment.