Synthesis and Characterization of [(OH)TeNb5O18](6-) in Water Solution, Comparison with [Nb6O19](8-).
作者： Pavel A. Abramov , Tatiana P. Zemerova , Nikolay K. Moroz , Nikolay B. Kompankov , Artem A. Zhdanov
DOI: 10.1021/ACS.INORGCHEM.5B01806
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摘要: Reaction of [Nb6O19]8– with H6TeO6 in water gives telluropentaniobate [(OH)TeNb5O18]6– (1) as single product, which was isolated Na+ and mixed Na+/K+ salts. Crystal structures were determined for Na6[(OH)TeNb5O18]·15H2O (Na6-1) K6Na[Nb5.5{Te(OH)}0.5O18.5]·26H2O (K6Na-1). Formation 1 monitored electrospray ionization mass spectrometry (ESI-MS) 125Te NMR techniques. Capillary electrophoresis used to calculate electrophoretic mobilities radii the anionic species solutions borate buffer. No condensation or degradation products detected. Reactions {Cp*Rh}2+ sources 1:1 2:1 hybrid polyoxometalate, are present solution a mixture isomers, detected by NMR. The isomerism is related various possibilities coordination different {M3O3} faces, relative unique Te atom. According ESI-MS experiments methanol, rapid redistribution organometallic frag...
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