Abstract
The 4-methyl-pyridine (4-Mepy) based dimeric copper(II) carboxyl-ate complex [Cu2(C10H19O2)4(C6H7N)2] or [Cu2(μ-O2CC9H19)4(4-Mepy)2] crystallizes with triclinic (P ) symmetry. The two CuII ions exhibit a distorted square-pyramidal environment and are connected into a centrosymmetric paddle-wheel dinuclear cluster [Cu⋯Cu = 2.6472 (8) Å] 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.
Highlights
The title compound [Cu2(-O2CC9H19)4(4-Mepy)2] crystallizes in the triclinic system, space group P1
The asymmetric unit comprises a CuII ion coordinated by the N atom of 4methylpyridine and by two deprotonated O-monodentate decanoate ligands
The two CuII ions are bridged by four carboxylate ligands in the syn–syn coordination mode, resulting in a distorted square-pyramidal environment with the four O atoms forming the square basal plane and the two pyridyl-N atoms of the 4-Mepy ligands occupying the apical positions
Summary
Research on metal carboxylates has gained importance in view of their use in the formation of open and porous frameworks and because of their biological activities and antibacterial properties (Smithenry et al, 2003; Lah et al, 2001). Complexes having R = a long-chain alkyl group can make the resultant dimeric carboxylates more soluble in organic solvents and can be more effective as catalysts in certain reactions (Baruah et al, 2015). These carboxylates can be prepared either by reaction of basic copper(II) carbonate/ acetate with the corresponding carboxylic acid or by reaction of a copper(II) salt with the sodium salt of the corresponding carboxylic acid (Hamza & Kickelbick, 2009; Moncol et al, 2010; Das & Barman, 2001). Symmetry codes: (i) x; y À 1; z; (ii) Àx; Ày þ 1; Àz þ 1; (iii) Àx; Ày þ 2; Àz þ 1
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