Preparation and Coordination Chemistry of Ph₂PNHNH_py

Ph(2)PNHNHpy (1) can be oxidised to form Ph2P(E)NHNHpy (E = O, S, Se, 2-4) or reacted with appropriate metal complexes such as [PtCl2(cod)], [PtMe2(cod)], [Pd(muCl)(eta(3)-C3H5)](2), [RhCl(cod)](2), [RuCl2(eta(3):eta(3)-Cl10H16)](2), [RuCl2(p-Cy)](2), [IrCp*Cl-2](2), and [Cu(MeCN)(4)][PF6] to give a range of new monodentate complexes. All new compounds have been charactersised by elemental analyses, NMR, IR and mass spec. The X-ray structures of Ph(2)PNHNHpy, Ph2P(Se)NHNHpy [RuCl2(eta(3):eta(3)- C10H16)(Ph(2)PNHNHpy-P)] and [IrCp*Cl-2(Ph(2)PNHNHpy-P)] are reported. Apart from monodentate P coordination all of the structures contain hydrazine based NH hydrogen bonding. (C) 2003 Elsevier Science Ltd. All rights reserved.