Synthesis, spectroscopic and thermal studies of the copper(II) aspartame chloride complex |
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| Authors: | S Çak?r E Co?kunP Naumov E Biçer? Bulut H ?çbudakO Çak?r |
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| Institution: | a Department of Chemistry, Faculty of Arts and Sciences, Ondokuz Mayis University, 55139 Kurupelit-Samsun, Turkey
b Institute of Chemistry, Faculty of Sciences, ‘Sv. Kiril i Metodij’ University, P.O. Box 162, MK-91001 Skopje, Macedonia |
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| Abstract: | Aspartame adduct of copper(II) chloride Cu(Asp)2Cl2·2H2O (Asp=aspartame) is synthesized and characterized by elemental analysis, FT IR, UV/vis, ESR spectroscopies, TG, DTG, DTA measurements and molecular mechanics calculations. Aqueous solution of the green solid absorbs strongly at 774 and 367 nm. According to the FT IR spectra, the aspartame moiety coordinates to the copper(II) ion via its carboxylate ends, whereas the ammonium terminal groups give rise to hydrogen bonding network with the water, the chloride ions or neighboring carboxylate groups. The results suggest tetragonally distorted octahedral environment of the copper ions. |
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| Keywords: | Copper Aspartame FT IR UV/vis ESR Thermal analysis |
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