109999-96-4Relevant academic research and scientific papers
Reactions of Copper(II) with - (R = Et or Pri) and Single-crystal X-Ray Studies of Cu*bipy and Cu*2PPh3
Drew, Michael G. B.,Forsyth, George A.,Hasan, Masihul,Hobson, Richard J.,Rice, David A.
, p. 1027 - 1034 (2007/10/02)
The position of the equilibrium (i) (R = Et or Pri) has been shown to be solvent dependent.The 2Cu2 2Cu + 2 (i) addition of nitrogen bases or triphenylphosphine affects the position of the equilibrium; for instance aromatic bases and PPh3 favour the formation of copper(I) adducts.The structures of two such adducts, Cu*bipy (1) (bipy = 2,2'-bipyridyl) and Cu*2PPh3 (2), have been determined by X-ray methods.Complex (1) is triclinic, space group P, with a = 9.388(6), b = 10.208(7), c = 10.704(7) Angstroem, α = 95.88(5), β = 68.44(5), γ = 115.94(6) deg, and Z = 2. 2190 Independent reflections above background were measured and the structure refined to R 0.080.Complex (2) is monoclinic, space group P21/n, with a = 11.88(1), b = 14.70(1), c = 22.09(1) Angstroem, β = 91.0(1) deg, and Z = 4. 4 087 Independent reflexions above background were measured and the structure refined to R = 0.056.Complex (1) exists as a centrosymmetric dimer with a Cu-S-P-S-Cu-S-P-S chair-shaped ring in which two S2P(OEt)2 groups bridge two four-coordinate metal atoms.The co-ordination spheres of the metal atoms consist of two sulphur atoms and two nitrogen atoms from chelating bipy groups , making up a distorted tetrahedral environment.Complex (2) is monomeric, with the metal atom bound to two PPh3 molecules and a - ion to give an approximately tetrahedral co-ordination sphere.
