Robust 1D open rack-like architecture in coordination polymers of Anderson POMs [{Na-4(H2O)(14)}{Cu(gly)}(2)][TeMo6O24] and [{Cu(en)(2)}(3){TeW6O24}]: synthesis, characterization and heterogeneous catalytic epoxidation of olefines

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Authors	DUTTA D. JANA A.D. DEBNATH M. BHAUMIK A. MAREK Jaromír ALI Mahammad
Year of publication	2010
Type	Article in Periodical
Magazine / Source	Dalton transactions : an international journal of inorganic chemistry
MU Faculty or unit	Faculty of Science
Citation
Web	http://pubs.rsc.org/en/Content/ArticleLanding/2010/DT/c0dt00426j
Field	Inorganic chemistry
Keywords	ORGANIC-INORGANIC HYBRID; TRANSITION-METAL-COMPLEXES; RARE-EARTH CATIONS; CHAIN-LIKE POLYMER; BUILDING-BLOCKS; CRYSTAL-STRUCTURE; KEGGIN POLYOXOMETALATE; HYDROTHERMAL SYNTHESIS; HETEROPOLY COMPOUNDS; MASS-SPECTROMETRY
Description	Two novel organic-inorganic hybrid tungsto-and molybdo-telurates having formula [{Na-4(H2O)(14)}{Cu(gly)}(2)][TeMo6O24] (1){gly = glycine} and [{Cu(en)(2)}(3){TeW6O24}]center dot 6H(2)O {en = ethyline-diamine} (2) based on Anderson type heteropolyoxometalates (POMs) have been synthesized and characterized by X-ray crystallography. Common structural feature of both 1 and 2 is the presence of a unique 1D open rack-like architecture, where the disc shaped Anderson POMs act as steps and cationic Cu-organic complexes act as handles of the rack. In 1 the independent structural unit is a 1D coordination polymer with the above mentioned rack type architecture, while in 2, these independent rack-like architectures are further extended to a 2D coordination polymer. Heterogeneous catalysis for the epoxidation of cyclohexene and styrene by complexes 1 and 2 showed very good catalytic efficiency.
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