期刊
CRYSTENGCOMM
卷 14, 期 20, 页码 6853-6859出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ce25896j
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资金
- State of Schleswig-Holstein
- Fonds der Chemischen Industrie (FCI)
Systematic variation of reaction parameters such as reaction temperature and concentration of the amine under solvothermal conditions using NH4VO3, Sb2O3, CoCl2 center dot 6H(2)O and tris(2-amino)ethylamine (tren) led to the formation of three new antimonato polyoxovanadates: {Co(tren)(H2O)}(3)[V15Sb6O42(H2O)]center dot H2O (1), {Co-2(tren)(3)}(2){Co(tren)(en)}[{V15Sb6O42(H2O)(Co(tren)(2))}V15Sb6O42(H2O)]center dot xH(2)O (x approximate to 11) (2) and {Co(tren)(trenH(2))}(2)[V16Sb4O42(H2O)]center dot 6H(2)O (3). The structures of 1 and 2 are composed of [V15Sb6O42(H2O)](6-) cluster anions, which weakly interact with each other through relatively short Sb center dot center dot center dot O bonds. The transition metal complex {Co(tren)(H2O)}(2+) acts as a counter ion in 1. In 2 charge neutrality is achieved by the two cations {Co-2(tren)(3)}(4+) and {Co(tren)(en)}(2+) which are isolated and by {Co(tren)(2)}(2+) being bound to one cluster anion. The main structural motifs in compound 3 are the [V16Sb4O42](8-) cluster shell and isolated {Co(tren)(trenH(2))}(4+) cations. The structures of all three cluster anions can be derived from the {V18O42} archetype by replacing three VO5 moieties by three Sb2O3 units in 1 and 2 and by substituting two VO5 square pyramids by two Sb2O3 groups in 3.
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