Thermal Analysis of Hexachloroplumbate and Chlorides Containing Complex Divalent Lead 2,2'-bipyridine Cations |
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Authors: | Kabir M. Szychliński J. Konitz A. |
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Affiliation: | (1) Department of Chemistry, University of Gdańsk, J. Sobieskiego 18, 80-952 Gdańsk, Poland;(2) Department of Chemistry, Technical University of Gdańsk, G. Narutowicza 11/12, 80-952 Gdańsk, Poland |
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Abstract: | Lead(II) 2,2'-bipyridine hexachloroplumba tetetrahydrate was synthesized and investigated by DTA, TG and DTG. IR spectroscopy and other methods enabled the identification of some of the decomposition products. Comparative studies on the corresponding chlorides: [Pb(bipy)]Cl2 and [Pb(bipy)3]Cl2, which can be considered as precursors of the hexachloroplumbate, were also undertaken. X-ray measurements enabled the tentative determination of the crystal structure of [Pb(bipy)]Cl2. Hexachloroplumbate decomposes with the liberation of chlorine, water and organic ligands, and the process is accompanied by the simultaneous transition of Pb(IV)→Pb(II). Chlorides release only ligands upon heating. Residues comprised always PbCl2. This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | lead(II) 2,2'-bipyridine hexachloroplumbate and chlorides thermal analysis X-ray structure |
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