Acta Cryst. (2006). E62, m1569-m1571  [ doi:10.1107/S1600536806021714 ]

(3-Acetylpyridine-N)chlorobis(triphenylphosphine-P)copper(I): a suitable candidate for absolute asymmetric synthesis?

A. Lennartson, K. Salo and M. Håkansson

Abstract: It was found that 3-acetylpyridine is capable of displacing triphenylphosphine from [CuCl(PPh₃)₃], forming the title compound, [CuCl(C₇H₇NO)(C₁₈H₁₅P)₂]. The two triphenylphosphine ligands possess the same sense of chirality, and the molecules are therefore conformationally chiral. The compound was found to crystallize as a racemate (centrosymmetric space group) under the crystallization conditions employed. The molecular structure shows that the carbonyl C atom is blocked at one side by a triphenylphosphine ligand, while the other face is open for nucleophilic attack. Obtaining chiral crystals of the title compound is thus a future objective. In the crystal structure, C-HO(=C)-bonded dimers are formed, which are further stabilized by - interactions. The dimers form infinite chains through weak C-H interactions.

Online 16 June 2006

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