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The New Water-Soluble Cluster Compound {Zn(en)3}3[V15Sb6O42(H2O)]•(ethylenediamine)3•10 H2O as a Synthon for the Generation of two New Antimonato Polyoxovanadates

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Image Credit: © 2018, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

L.K. Mahnke, U. Warzok, M. Lin, C. Näther, C.A. Schalley, W. Bensch – 2018

The new antimonato polyoxovanadate {Zn(en)3}3[V15Sb6O42(H2O)]•3en•10H2O (en = ethylenediamine) synthesized under hydrothermal conditions exhibits a remarkable solubility in water. Electrospray ionization mass spectrometry (ESI MS) investigations on an aqueous solution demonstrate that the cluster core is fully intact for 72 h. At longer times a slow transformation into a {V14Sb8O42} cluster is observed. The conversion reaches 50% after 14 days and is complete after approximately 20 days. The rate of the {V15Sb6} → {V14Sb8} cluster transformation significantly increases, when ammonium acetate is added. Applying the new compound as a synthon in the presence of 1,10-phenanthroline (phen) afforded crystallization of {Zn(phen)3}2[Zn(en)2V15Sb6O42(H2O)]•23H2O after short reaction times, while addition of Sb2O3 led to fast crystallization of {(Zn(en)2(H2O)2)(Zn(en)2)}[Zn(en)2V15Sb6O42(H2O)]•8.5H2O. In the crystal structure of {Zn(en)3}3[V15Sb6O42(H2O)]•3en•10H2O, the en molecules are attached to the cluster anion by Sb-N bonds. In the structures of the resulting two new compounds, the [V15Sb6O42(H2O)]6- anions are expanded by Zn2+-centered complexes through Zn-O-V bond formation.

Title
243
The New Water-Soluble Cluster Compound {Zn(en)3}3[V15Sb6O42(H2O)]•(ethylenediamine)3•10 H2O as a Synthon for the Generation of two New Antimonato Polyoxovanadates
Author
L.K. Mahnke, U. Warzok, M. Lin, C. Näther, C.A. Schalley, W. Bensch
Date
2018-02-21
Identifier
DOI: 10.1002/chem.201705732
Citation
Chem. Eur. J. 2018, 24, 5522-5528
Type
Text