X-ray structure and spectroscopic characterization of doubly-bridged binuclear copper(II) complexes in symmetric and asymmetric coordination environments |
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| Authors: | Gnana S Siluvai Narasimha N Murthy |
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| Institution: | Department of Chemistry, Indian Institute of Technology, Madras 600 036, India |
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| Abstract: | μ-1,3-Acetamide or acetate bridged, symmetric and asymmetric dicopper(II) complexes viz Cu2(P1-O−)(NHAc−)](ClO4)2 (1), Cu2(P2-O−)(OAc−)](ClO4)2 (2) and Cu2(P2′-O−)(OAc−)(H2O)](ClO4)2 (3) were synthesized by employing classic dinucleating ligands; P1-OH, P2-OH (symmetric), and P2′-OH (asymmetric) having trivial differences in their ligand frame work. Solid state structures of these complexes were determined by X-ray crystallography. In solution, they were also characterized by various spectroscopic techniques, which includes ESI-MS, FT-IR, optical, solution magnetic moment, paramagnetic 1H NMR and EPR. The solution magnetic moment of these complexes at room temperature suggests a weak magnetic interaction between the two Cu(II) centers. |
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| Keywords: | Symmetrical and unsymmetrical dicopper(II) complexes X-ray crystal structures Solution magnetic moment Paramagnetic 1H NMR |
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