Synthesis and Characterization of [(OH)TeNb5O18](6-) in Water Solution, Comparison with [Nb6O19](8-) Full article
| Journal |
Inorganic Chemistry
ISSN: 0020-1669 , E-ISSN: 1520-510X |
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| Output data | Year: 2016, Volume: 55, Number: 4, Pages: 1381-1389 Pages count : 9 DOI: 10.1021/acs.inorgchem.5b01806 | ||||||
| Tags | CRYSTAL-STRUCTURE; PHOTOCATALYTIC PROPERTIES; COORDINATION CHEMISTRY; POLYOXONIOBATE; HEXANIOBATE; ION; COMPLEXES; CLUSTER; Te; Nb | ||||||
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| Affiliations |
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Funding (1)
| 1 | Russian Science Foundation | 14-13-00645 |
Abstract:
Reaction of [Nb6O19]8– with H6TeO6 in water gives telluropentaniobate [(OH)TeNb5O18]6– (1) as single product, which was isolated as Na+ and mixed Na+/K+ salts. Crystal structures were determined for Na6[(OH)TeNb5O18]·15H2O (Na6-1) and K6Na[Nb5.5{Te(OH)}0.5O18.5]·26H2O (K6Na-1). Formation of 1 was monitored with electrospray ionization mass spectrometry (ESI-MS) and 125Te NMR techniques. Capillary electrophoresis was used to calculate electrophoretic mobilities and radii of the anionic species in solutions of [(OH)TeNb5O18]6– and [Nb6O19]8– in borate buffer. No condensation or degradation products were detected. Reactions of 1 with {Cp*Rh}2+ sources gives 1:1 and 2:1 hybrid polyoxometalate, which are present in solution as a mixture of isomers, as detected by 125Te NMR. The isomerism is related to various possibilities of coordination of {Cp*Rh}2+ to different {M3O3} faces, relative to the unique Te atom. According to ESI-MS experiments in water and methanol, rapid redistribution of the organometallic fragments between the 1:1 and 2:1 complexes takes place. The 1:1 complexes are more stable in water, while 2:1 complexes dominate in methanol. X-ray structural analysis of the crystals isolated from 2:1 reaction mixture allowed identification of Na3[{Cp*Rh}2TeNb5O19]·24H2O (Cp*2Rh2-1) with two {Cp*Rh}2+ fragments capping the opposing faces of the Lindqvist anion.
Cite:
Abramov P.A.
, Zemerova T.P.
, Moroz N.K.
, Kompankov N.B.
, Zhdanov A.A.
, Tsygankova A.R.
, Vicent C.
, Sokolov M.N.
Synthesis and Characterization of [(OH)TeNb5O18](6-) in Water Solution, Comparison with [Nb6O19](8-)
Inorganic Chemistry. 2016. V.55. N4. P.1381-1389. DOI: 10.1021/acs.inorgchem.5b01806 WOS Scopus РИНЦ ANCAN OpenAlex
Synthesis and Characterization of [(OH)TeNb5O18](6-) in Water Solution, Comparison with [Nb6O19](8-)
Inorganic Chemistry. 2016. V.55. N4. P.1381-1389. DOI: 10.1021/acs.inorgchem.5b01806 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Aug 7, 2015 |
| Published online: | Feb 4, 2016 |
| Published print: | Feb 15, 2016 |
Identifiers:
| Web of science: | WOS:000370395000007 |
| Scopus: | 2-s2.0-84959469687 |
| Elibrary: | 26981030 |
| Chemical Abstracts: | 2016:208449 |
| Chemical Abstracts (print): | 164:277176 |
| OpenAlex: | W2272385331 |