Journal of the Chemical Society, Dalton Transactions p. 969 - 974 (1984)
Update date:2022-08-05
Topics:
Berners-Price, Susan J.
Mazid, Muhammed A.
Sadler, Peter J.
Bis-chelated four-co-ordinate gold(I)-phosphine complexes of 1,2-bis(diphenylphosphino)ethane (dppe) and 1,2-bis(diethylphosphino)ethane (depe) exhibit exceptionally high thermodynamic and kinetic stability both in the solid state and in solution at ambient temperatures.Their formation in solution has been studied by conductivity and 31P n.m.r. titrations.Complexes of a trans-gold 31P-31P n.m.r. coupling of 52 Hz.The title complex was crystallized and shown by X-ray crystallography to contain gold (I) with a flattened tetrahedral (closely D2d) co-ordination geometry (P-Au-P, 85-130) chelated by two dppe ligands with Au-P bond lengths of 2.39-2.42 A.Crystals are monoclinic, space group P21/n, with a=18.685(2), b=19.414(2), c=15.096(1) A, β=91.69(1), and Z=4; 4 811 reflections refined to R 0.062.
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