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Fixation modes of gold(III) from solutions using cadmium(II) dithiocarbamates: Preparation, supramolecular structure and thermal behaviour of polynuclear and heteropolynuclear gold(III) complexes: bis(N,N-dialkyldithiocarbamato-S,S’)gold(III) polychlorometallates, [Au(S2CNR2)2]nX (n =1: X = [AuCl4]–; n = 2: X = [CdCl4]2–, [Cd2Cl6]2–)
Institute of Geology and Nature Management, Far East Branch, Russian Academy of Sciences, Blagoveshchensk.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Industriell miljö- och processteknik.
Institute of Chemistry, Far Eastern Branch of the Russian Academy of Sciences.
Institute of Geology and Nature Management, Far East Branch, Russian Academy of Sciences, Blagoveshchensk.
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2012 (Engelska)Ingår i: Polyhedron, ISSN 0277-5387, E-ISSN 1873-3719, Vol. 40, nr 1, s. 53-64Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Four novel heteropolynuclear and polynuclear complexes of the general formulae [Au(S2CNR2)2]2X (X = [CdCl4]2-, R = CH3 (1); X = [Cd2Cl6]2-, R = C3H7 (2)) and [Au(S2CNR2)2][AuCl4] (R = iso-C3H7 (3); R = iso-C4H9 (4)) were prepared using heterogeneous reactions between appropriate freshly precipitated binuclear cadmium(II) dialkyl dithiocarbamates and AuCl3 in 2 M hydrochloric acid. The isolated complexes were studied by 13C CP/MAS NMR spectroscopy, single-crystal X-ray diffraction and simultaneous thermal analysis (STA) under an argon atmosphere. In all molecular structures (1–4), one of the gold atoms coordinates two dialkyl dithiocarbamate ligands in the S,S’-bidentate mode, forming a square-planar coordination polygon [AuS4], while the other gold atom (in 3 and 4) has four neighbouring chlorine atoms [AuCl4]. At the supramolecular level, compounds 1 and 2 comprise binuclear cations, [Au2{S2CN(CH3)2}4]2+ and polynuclear chains, ([Au{S2CN(C3H7)2}2]+)n in a combination with [CdCl4]2- and [Cd2Cl6]2- anions, respectively. Unexpected structural distinctions at the supramolecular level were discovered for the chemically related compounds 3 and 4. In these ionic complexes, there are either cationic trinuclear formations, {[Au{S2CN(iso-C3H7)2}2]2[AuCl4]}+, or polynuclear chains, ([Au{S2CN(iso-C4H9)2}2]+)n, both combined with [AuCl4]– anions, in the structural basis of compounds 3 and 4, respectively.

Ort, förlag, år, upplaga, sidor
2012. Vol. 40, nr 1, s. 53-64
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URN: urn:nbn:se:ltu:diva-7115DOI: 10.1016/j.poly.2012.03.043ISI: 000305590800007Scopus ID: 2-s2.0-84862673918Lokalt ID: 56f288ea-59de-4c5e-8fca-285a96492d2aOAI: oai:DiVA.org:ltu-7115DiVA, id: diva2:980002
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Validerad; 2012; 20120410 (andbra)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2018-07-10Bibliografiskt granskad

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Ivanov, Alexander V.Antzutkin, Oleg

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