Syntheses,crystal structures and solvatochromic properties of dinuclear oxalato-bridged copper(II) complexes |
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| Authors: | Hamid Golchoubian Razieh Samimi |
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| Affiliation: | 1. Department of Chemistry, University of Mazandaran, Babol-sar, Iranh.golchobian@umz.ac.ir;3. Department of Chemistry, University of Mazandaran, Babol-sar, Iran |
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| Abstract: | Three dinuclear copper(II) complexes, [Cu2(L1)2(μ-ox)](ClO4)2?2(CH3CN), [Cu2(L2)2(μ-ox)](ClO4)2?H2O, and [Cu2(L3)2(μ-ox)](ClO4)2 where ox = oxalato; L = N,N-dimethyl,N′-benzylethane-1,2-diamine, L1, N,N-diethyl,N′-benzylethane-1,2-diamine, L2, N,N-diisoprophyl,N′-benzylethane-1,2-diamine, L3, were prepared and characterized by elemental analyses, spectral (IR, UV–Vis) data and molar conductance measurements. The crystal structures of [Cu2(L1)2(μ-ox)](ClO4)2?2(CH3CN) and [Cu2(L3)2(μ-ox)](ClO4)2 have been determined by single-crystal X-ray analysis. Solvatochromic behaviors were investigated in various solvents, showing positive solvatochromism. The effect of steric hindrance around the copper ion imposed by N-alkyl groups of the diamine chelates on the solvatochromism property of the complexes is discussed. Solvatochromism was also studied with different solvent parameter models using stepwise multiple linear regression method. |
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| Keywords: | Dinuclear copper(II) oxalate-bridged solvatochromism mixed-chelate SMLR method |
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