%0 Journal Article
%@ 0022-328X
%A Canty, AJ
%A Skelton, BW
%A White, AH
%D 1992
%F epprod:2957
%J Journal of Organometallic Chemistry
%N 2
%P 245-257
%T Structural studies of complexes containing cycloplatinated
tris(pyrazol-1-yl)methane
%U http://eprints.utas.edu.au/2957/
%V 430
%X Cyclometallation at the C(5) position of one ring of tris(pyrazol-1-yl)methane occurs on dissolutionof PtMe2{(pz)3CH} in 3,5-dimethylpyridine, to form the platinum(II) complex PtMe((pz)2(C3H2N2)-CH-N,C)(3,5-Me2py) (lb). Structural studies of lb, and the related complexes PtMe{(pz)3(C3H2N2)-CH-N,C}(N-methylimidazole) (1c) and PtMe{(pz)2(C3H2N2)CH- N,C}{PPh2(o-MeOC6H4)} (ld) show that these complexes have square planar geometry with cis-organic groups, with the cyclometallated group having one pyrazole ring uncoordinated. The complexes PtMe{(pz)2(C3H2N2)CH-C}(L2) (L2 = 2PPh3 (2a), 2PEtPh, (2b), Ph2PCH2CH2PPh2 (2c)] have a similar geometry at platinum(II); the metallated ligand is present as a [C]- donor with two uncoordinated pyrazole rings. In 2a, 2b, and 2c,
there are short Pt...H contacts at ~2.7 A for the methine proton of the cyclometallated ligand.
%Z The definitive version is available at http://www.sciencedirect.com