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Synthesis, structure, and heterogeneous catalytic activity of tungsten chalcogenide cubane cluster containing alkaline earth metal complex

Title
Synthesis, structure, and heterogeneous catalytic activity of tungsten chalcogenide cubane cluster containing alkaline earth metal complex
Authors
Kwon J.Y.Kim Y.Kim S.-J.Lee S.H.Kwak H.Kim C.
Ewha Authors
김성진김영미
SCOPUS Author ID
김성진scopus; 김영미scopus
Issue Date
2008
Journal Title
Inorganica Chimica Acta
ISSN
0020-1693JCR Link
Citation
vol. 361, no. 7, pp. 1885 - 1890
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
A new compound containing a cubane tungsten chalcogenide cluster [W4(μ3-Te)4(CN)12]6- and Ca2+ complex units has been prepared by the reaction of aqueous solution of K6[W4(μ3-Te)4(CN)12] · 5H2O with the solution of a Ca(NO3)2 and phen(1,10-phenanthroline) (1:2 molar ratio) in a solvent mixture of H2O/EtOH. The structure of [{Ca(phen)2(H2O)}{Ca(phen)(H2O)4}{Ca(phen)2(H2O)3}][W4Te4(CN)12] · 5H2O 1 has been determined by X-ray crystallography. Compound 1 contains [{Ca(phen)(H2O)4}{Ca(phen)2(H2O)3}][W4(μ3- Te)4(CN)12] units bridged by {Ca(phen)2(H2O)}2+ units to form an one-dimensional zigzag chain structure. Interestingly, compound 1 showed a heterogeneous catalytic activity in the transesterification of a range of esters with methanol under the mild conditions. Moreover, it can be reused without any loss of activity through 10 runs with ester. © 2007 Elsevier B.V. All rights reserved.
DOI
10.1016/j.ica.2007.09.044
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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