PREPARATION, STRUCTURAL ORGANIZATION, AND THERMAL BEHAVIOR OF THE ION-POLYMERIC GOLD(III)-ZINC(II)-DIBUTYLAMMONIUM COMPLEX ([NH2(C4H9)2][Au{S2CN(C4H9)2}2][ZnCl4])n
T. A. Rodina1, O. V. Loseva1,2, A. I. Smolentsev3, A. V. Ivanov2
1Amur State University, Blagoveshchensk, Russia
2Institute of Geology and Nature Management, Far Eastern Branch, Russian Academy of Sciences, Blagoveshchensk, Russia
3Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: диалкилдитиокарбаматы цинка со свойствами хемосорбентов, формы связывания золота из растворов, гетероядерные комплексы золота(III)-цинка, кристаллическая и молекулярная структура, РСА, синхронный термический анализ, электронная растровая микроскопия и рентгеноспектральный микроанализ, zinc dialkyldithiocarbamates with chemisorption properties, binding forms of gold from solutions, heteronuclear gold(III)-zinc complexes, crystal and molecular structure, X-ray crystallography, synchronous thermal analysis, scanning electron microscopy, X-ray spectral microanalysis
Abstract
Structural organization and thermal behavior of a new polymeric heteronuclear of gold(III)-zinc-dibutylammonium complex ([NH2(C4H9)2][Au{S2CN(C4H9)2}2][ZnCl4]) n (I), obtained by a heterogeneous reaction between freshly precipitated binuclear zinc dibutyldithiocarbamate [Zn2{S2CN(C4H9)2}4] and a H[AuCl4] solution in 2M HCl, is studied. According to single crystal XRD data the crystal structure of the obtained compound is determined and its main structural units are complex [NH2(C4H9)2]+ and [Au{S2CN(C4H9)2}2]+ cations and complexе [ZnCl4]2- anions. Dibutylammonium cations are hydrogen bonded to tetrachlorozincate ions, forming zigzag polymer chains. On the side of the chains there are discrete complex [Au{S2CN(C4H9)2}2]+ cations characterized by a planar tetragonal structure and a uniform spatial orientation. The thermal behavior of I is investigated by synchronous thermal analysis. The multistage process of thermal destruction involves the thermolysis of the cation and anion parts (with the release of metallic gold, zinc chloride and a partial formation of zinc sulfide).
|
