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Zeitschrift für Naturforschung B

A Journal of Chemical Sciences

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1865-7117
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Mixing SbIII and GeIV occupancy in the polyoxovanadate {V14E8} archetype

Michael Wendt
  • Institut für Anorganische Chemie der Universität Kiel, Max-Eyth-Straße 2, D-24119 Kiel, Germany
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/ Christian Näther
  • Institut für Anorganische Chemie der Universität Kiel, Max-Eyth-Straße 2, D-24119 Kiel, Germany
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/ Jan van Leusen / Paul Kögerler / Wolfgang Bensch
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  • Institut für Anorganische Chemie der Universität Kiel, Max-Eyth-Straße 2, D-24119 Kiel, Germany
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Published Online: 2018-09-11 | DOI: https://doi.org/10.1515/znb-2018-0092

Abstract

The first mixed germanato-antimonato derivative of the {V14E8O42} (E=semi-metal) cluster archetype has been synthesized under hydrothermal conditions and isolated as {Ni(phen)3}2[α-VIV14SbIII5GeIV3O42(OH)3(H2O)]· ≈16H2O (phen=1,10-phenanthroline). In the cluster anion, seven of the eight hetero-metal positions are occupied by disordered Ge/Sb atoms, while one position is fully occupied by Sb atoms. The [V14Sb5Ge3O42(OH)3(H2O)]6− anions are arranged in pairs with remarkably short inter-cluster Sb···O contacts. Bond valence sum calculation strongly suggests that the Sb···O contact must be taken into account as a weak bond. The magnetic properties are dominated by strong intra-cluster antiferromagnetic exchange interactions, and the cluster anion is magnetically quasi-isolated from the spins of the Ni2+ complex cations.

This article offers supplementary material which is provided at the end of the article.

Keywords: crystal structure; germanato polyoxovanadates; magnetic properties; self-assembly; solvothermal synthesis

Dedicated to: Professor Bernt Krebs on the occasion of his 80th birthday.

References

About the article

Received: 2018-05-17

Accepted: 2018-07-18

Published Online: 2018-09-11


Citation Information: Zeitschrift für Naturforschung B, 20180092, ISSN (Online) 1865-7117, ISSN (Print) 0932-0776, DOI: https://doi.org/10.1515/znb-2018-0092.

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