[Ethylene-1,2-bis(diphenylphosphine)-P,P']dinitratoplatinum(II) and cis-bis[(diphenylphosphinomethyl)-diphenylphosphine oxide-O,P]-platinum (II) dinitrate dihydrate.
In [Pt(dppe)(NO(3))(2)], where dppe is ethylene-1,2-bis(diphenylphosphine) (C(26)H(24)P(2)), the Pt atom is coordinated by the two P atoms and by two O atoms of the two nitrate ions. The molecule has a distorted square-planar geometry, with one of the nitrate groups directed on each side of the plane. The cation in cis-[Pt(dppmO-O,P)(2)](NO(3))(2) x 2H(2)O, where dppmO is bis(diphenylphosphinomethyl)diphenylphosphine oxide (C(25)H(22)OP(2)), comprises two five-membered chelate rings, each dppmO ligand being coordinated to platinum through one P atom and the O atom. The larger P--Pt--P angle of 102.25 (4) degrees is due to steric interactions between the two phenyl groups on each P atom.
Department of Chemistry, University of Missouri -- St Louis, 8001 Natural Bridge Road, St Louis, MO 63121, USA.
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