Phosphino-urea chemistry: preparation and structure of chelate and P–N bond cleavage complexes
Abstract
Reactions of Ph2PNRC(E)NRPPh2 proceed to give simple P,P chelate complexes when E=O but give the unexpected five-membered true heterocycle Pt[Ph2PN(Me)C(NMeH)S]Cl2 and an unusual six-membered Pd2P2O2 ring when E=S. The X-ray structures of three examples are reported.