Journal of the Chemical Society, Dalton Transactions p. 2182 - 2190 (1980)
Update date:2022-08-04
Topics:
Boag, Neil M.
Green, Michael
Howard, Judith A. K.
Spencer, John L.
Stansfield, Robert F. D.
at all.
Reaction of the compound a third platinium atom on treatment with a single-crystal X-ray diffraction study has been carried out on a unit cell of dimensions a=17.047 (2), b=13.667 (2), c=25.073 (3) Angstroem, and β=105.79(1)deg.The structure has been solved by heavy-atom methods from 3 038 intensity data =3.0?(I)> measured on a fourcircle diffractometer at 300 K, and refined to R 0.047 (R'0.046).The three platinium atoms adopt an open V-shaped configuration with an internuclear distance of 2.90 Angstroem and an interbond angle of 144deg, while the acetylenic units form transverse bridges across the two Pt-Pt vectors on the convex side of the V.The phenyl groups bend away from the metal atoms to give a C-C-Ph angle of 139deg, and the whole molecule is constrained crystallographically to C2 symmetry.The ethyl groups of the phosphine ligands are ill defined and possibly disordered.The diplatinium complexes
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