Binuclear copper(II) complex with bis(azomethine) based on 1,3-diaminopropan-2-ol and 4-hydroxy-3-formylcoumarin: Crystal structure and magnetic properties
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- Shcherbakov, I.N., Levchenkov, S.I., Popov, L.D. et al. Russ J Coord Chem (2015) 41: 69. doi:10.1134/S1070328415020098
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The binuclear copper(II) complex [Cu2(L)(Mp)(H2O)((CH3)2SO)] (Mp is 6-methoxypurinate anion) with the heterocyclic azomethine ligand, which is the condensation product of 1,3-diaminopropan-2-ol and 4-hydroxy-3-formylcoumarin (H3L), is synthesized and structurally characterized (CIF file CCDC no. 982199). The temperature dependence of the magnetic susceptibility is measured and shows a significant exchange interaction of the antiferromagnetic type (2J = −348 cm−1) in the compound. This sharply distinguishes the new complex from the earlier studied compounds with a similar exchange fragment characteristic of the ferromagnetic exchange. The antiferromagnetic exchange parameter is calculated by the quantum-chemical DFT method in the broken symmetry approximation.