Synthesis and X-ray crystal structure of ab-dimethyl-df-dinitro-ce-bis(triethylphosphine)platinum(IV)

Abstract

The interaction of nitric oxide with cis-PtMe₂(PEt₃)₂ gives a quantitative yield of PtMe₂(NO₂)₂(PEt₃)₂ whose structure has been determined by X-ray diffraction. The crystals of the complex are monoclinic, space group P2₁, with a= 7.278(1), b= 12.120(1), c= 11.867(1)Å, and β= 94.56(1)°. The structure was solved via the heavy-atom method and refined to an R value of 0.032 for 2 935 observed diffractometer data. The platinum(IV) atom has the expected octahedral geometry with cis methyls [Pt–C 2.077(9), 2.111(8)Å], cis nitro-groups [Pt–N 2.184(6), 2.198(8)Å], and trans phosphines [Pt–P 2.337(3), 2.430(3)Å].