Acta Cryst. (2004). E60, m1605-m1607  [ doi:10.1107/S1600536804024882 ]

Bis[(S)-N-(2-butyl)-3,5-dichlorosalicylideneaminato-²N,O]copper(II)

T. Akitsu and Y. Einaga

Abstract: The title compound, [Cu(C₁₁H₁₂Cl₂NO)₂], has a compressed tetrahedral trans-[CuN₂O₂] coordination environment. The absolute configuration is found to be (S,S) for the crystal examined. The Cu-N bond distances are 1.969  (4) and 1.971  (4)  Å, while the Cu-O bond distances are 1.886  (3) and 1.892  (3)  Å. The ligands, containing optically active (S)-2-butylamine moieties and electron-withdrawing Cl substituents, lead to an umbrella conformation of the overall molecule. On heating to 387  K, a structural phase transition is observed, probably involving a change in coordination geometry.

Online 9 October 2004

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