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Abstract
Two complexes, Cu4(im)4(C4O3H6)2(NO2)4(H2O)4 (1), [(phen)Cu(C2O4)(H2O)] · H2O (2) (im = imidazole, phen = 1,10-phenanthroline), were synthesized and structurally characterized by elemental analysis, IR, UV, TG and single crystal X-ray diffraction. During the synthesis of compound 1, citric acid lost two of its carboxylato groups and was decomposed into 3-hydroxybutanoic acid, the ions were reduced to
ions. In compound 1, a tetranuclear Cu(II) complex was built up of four Cu(II) ions connected by two 3-hydroxybutanoic anions. In the preparation of compound 2, tartaric acid was decomposed into oxalic acid. Compound 2 is constructed by one phen, one oxalic anion and one water molecule coordinated directly to Cu(II).
Acknowledgements
This work was supported by the National Natural Science Foundation of China (Nos. 20271007, 20331010 and 90406002), and Specialized Research Fund for the Doctoral Program of Higher Education of China (No. 20030007014).