Discrete trinuclear copper(II) compounds as building blocks: the influence of the peripheral substituents on the magnetic coupling in oxamato-bridged complexes.

Two new trinuclear copper(ii) complexes without end-capping ligands, (Bu4N)2[Cu(dmso)2{Cu(dnopba)(dmso)}2] () and (Bu4N)2[Cu(dmso)2{Cu(dcopba)(dmso)}2] () [dnopba = 4,5-dinitro-ortho-phenylenebis(oxamate), dcopba = 4,5-dichloro-ortho-phenylenebis(oxamate), Bu4N(+) = tetra-n-butylammonium and dmso = dimethylsulfoxide], were synthesized and their structures were determined by single crystal X-ray diffraction. The crystal structures of and consist of two outer bis(oxamato)(dmso)cuprate(ii) units which act as bidentate ligands toward a trans-bis(dmso)copper(ii) inner entity leading to centrosymmetric tricopper(ii) complexes with copper-copper separations across the oxamate bridges of 5.1916(3) …

Crystal Structure and Magnetic Properties of an Oxamato‐Bridged Heterobimetallic Tetranuclear [Ni II Cu II ] 2 Complex of the Rack Type

CCDC 1558468: Experimental Crystal Structure Determination

Related Article: Natalia V. Reis, Wdeson P. Barros, Willian X. C. Oliveira, Cynthia L. M. Pereira, Willian R. Rocha, Carlos B. Pinheiro, Francesc Lloret, Miguel Julve, Humberto O. Stumpf|2018|Eur.J.Inorg.Chem.||477|doi:10.1002/ejic.201700821