Thermal lens spectrometry as a tool for determination of stability constants of complex compounds |
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Authors: | M A Proskurnin V V Chernysh M Yu Kononets S V Pakhomova |
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Institution: | (1) Department of Chemistry, M. V. Lomonosov Moscow State University, 1 Leninskie Gory, 119992 Moscow, Russian Federation |
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Abstract: | The potential of thermal lens spectrometry in the determination of stability constants of complex compounds was explored using copper(I) and iron(II) complexes with 1,10-phenanthroline and 2,9-dimethyl-1,10-phenanthroline as examples. Thermal lens spectrometry offers advantages over conventional spectrophotometry in the determination of stability constants both in aqueous and nonaqueous media. The overall and stepwise stability constants of iron(II) tris(1,10-phenanthrolinate), copper(I) bis(2,9-dimethyl-1,10-phenanthrolinate), and copper(I) bis(1,10-phenanthrolinate) were determined at levels as low as 10−8–10−6 mol L−1.__________Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 123–133, January, 2005. |
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Keywords: | thermal lens spectrometry stability constants complexation I)" target="_blank">copper(I) II)" target="_blank">iron(II) 1 10-phenanthroline 2 9-dimethyl-1 10-phenanthroline |
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