Abstract

The title compund, [Cu2(OH)2(C22H25N3)2](ClO4)2, is a copper(II) dimer, with two [CuL]2+ units [L is bis-(6-methyl-2-pyridylmethyl)-(2- phenyl-ethyl)amine] bridged by hydroxide groups to define the {[CuL](-OH)2[CuL]}2+ cation. Charge balance is provided by perchlorate counter-anions. The cation has a crystallographic inversion centre halfway between the CuII ions, which are separated by 3.0161 (8) Å. The central core of the cation is an almost regular Cu2O2 parallelogram of sides 1.931 (2) and 1.935 (2) Å, with a Cu - O - Cu angle of 102.55 (11)°. The coordination geometry around each CuII centre can be best described as a square-based pyramid, with three N atoms from L ligands and two hydr-oxide O atoms completing the coordination environment. Each cationic unit is hydrogen bonded to two perchlorate anions by means of hydroxide-perchlorate O - H⋯O inter-actions. © International Union of Crystallography 2007.