Structure of tetra-kis-(μ-deca-noato-κ(2) O:O')bis-[(4-methyl-pyridine-κN)copper(II)], a dimeric copper(II) complex.

The 4-methyl-pyridine (4-Mepy) based dimeric copper(II) carboxyl-ate complex [Cu(2)(C(10)H(19)O(2))(4)(C(6)H(7)N)(2)] or [Cu(2)(μ-O(2)CC(9)H(19))(4)(4-Mepy)(2)] crystallizes with triclinic (P ) symmetry. The two Cu(II) ions exhibit a distorted square-pyramidal environment and are connected into a centrosymmetric paddle-wheel dinuclear cluster [Cu⋯Cu = 2.6472†(8)†à ] via four bridging carboxyl-ate ligands arranged in the syn-syn coordination mode. The apical positions around the paddle-wheel copper centers are occupied by the N atoms of the 4-methyl-pyridine ligands. The structure exhibits disorder of the terminal alkyl carbon atoms in the deca-noate chains.