Structure of cis-chlorobis(triphenylphosphine)-(1,3-di-p-tolyltriazenido)platinum(II)-chloroform, PtCl(PPh3)2(p-MeC6H4NNNC6H4Me-p).CHCl3

The structure of the title compd. was detd. at room temp. from 3-dimensional x-ray data collected by counter methods\ud and refined by least-squares techniques to a final R of 0.059 based on 3897 observations above background. The\ud compd. crystd. in the monoclinic space group P21/a with a 19.725(4), b 16.247(2), c 15.321(2) Å and 105.85(2)°, Z = 4.\ud The Pt atom has square-planar coordination with Pt-P(1) = 2.289(6), Pt-P(2) = 2.251(7), Pt-Cl = 2.353(7), and Pt-N(1) =\ud 2.11(2) Å. The aryldiazene moiety lies in a plane roughly perpendicular to the coordination plane and its Ph groups are\ud twisted to relieve steric interactions with the adjacent phosphine Ph groups