Dinuclear Cu(ii) 1,2,3-Triazole-Bridged Complex with Ferromagnetic Coupling

Abstract

A new dinuclear Cu(ii) complex [Cu2Cl4(L1) 2] (1) (L1≤1-(2-picolyl)-4-hexyl-1H-1,2,3-triazole) has been synthesised and characterised by single-crystal X-ray diffraction (XRD) and powder XRD, thermogravimetric analysis, electron paramagnetic resonance spectrum, photoluminescence, and magnetic measurements. Complex 1 shows double 1,2,3-triazoles bridging the dinuclear Cu2N4 moiety, in which the bridging N≤N bond indicates basal-apical asymmetric mode with 112.6° torsion angle of Cu-N≤N-Cu. Different from most azole-bridged dinuclear Cu(ii) with antiferromagnetic couplings, complex 1 shows an intramolecular weak ferromagnetic interaction (J≤0.91cm-1). © 2013 CSIRO.