Abstract
The syntheses, characterization, and crystal structures of the reaction products of Cu2+ with imidazole (Himz) and different aromatic carboxylates, viz.: [Cu(Himz)2(cinn)2(H2O)] (1), [Cu(Himz)2(paba)2] (2) and [Cu(Himz)2(clba)2] (3) (cinn– = C9H7O2–, paba– = C7H6NO2–, clba– = C7H4ClO2–) are described and studied by spectroscopic (UV–visible, FTIR) measurements. Single-crystal X-ray diffraction analyses indicate that each complex is monomeric. The metal ion in 1 adopts square-pyramidal coordination geometry arising from two imidazole nitrogens, two cinnamate oxygens, and an apical aqua. The metal ions of 2 and 3, however, assume a square planar configuration, which is realized by coordination of two nitrogens of two imidazoles and two oxygens; in both complexes, the imidazole moieties are trans to each other. TGA results indicate that upon heating, these complexes lose their carboxylate anions first, followed by removal of the imidazole molecules.
Original language | English |
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Pages (from-to) | 1380-1391 |
Number of pages | 12 |
Journal | Journal of Coordination Chemistry |
Volume | 71 |
Issue number | 9 |
Early online date | 25 Apr 2018 |
DOIs | |
Publication status | Published - 2018 |
Bibliographical note
Crystallographic data for the structures in this paper have been deposited with the Cambridge Crystallographic Data Center, CCDC, 12 Union Road, Cambridge CB2 1EZ, UK. Copies of the data can be obtained free of charge on quoting depository numbers CCDC-1543434 (1), CCDC-1543435 (2) and CCDC-1543436 (3) (Fax:+44-1223-336–033; E-mail: deposit@ccdc.cam.ac.uk; http://www.ccdc.cam.ac.uk).Supplemental data for this article can be accessed at https://doi.org/10.1080/00958972.2018.1460471.
Keywords
- copper(II) carboxylate
- 2-Chlorobenzoic acid
- cinnamic acid
- imidazole
- p-aminobenzoic acid