Interconnection of [V15As6O42(H2O)]6- Clusters by Cu2+-centered Complexes: Synthesis, Crystal Structure and Selected Properties

Adam Wutkowski; Christian Näther; Jan van Leusen; Paul Kögerler; Wolfgang Bensch

doi:10.5560/znb.2014-4161

Publicly Available Published by De Gruyter March 19, 2015

Interconnection of [V₁₅As₆O₄₂(H₂O)]^6- Clusters by Cu²⁺-centered Complexes: Synthesis, Crystal Structure and Selected Properties

Adam Wutkowski , Christian Näther , Jan van Leusen , Paul Kögerler and Wolfgang Bensch

From the journal Zeitschrift für Naturforschung B

https://doi.org/10.5560/znb.2014-4161

Abstract

The compound {[Cu(C₅H₁₄N₂)₂]₃[V₁₅As₆O₄₂(H₂O)]} was synthesized under solvothermal conditions. During the reaction the V^V species of NH₄VO₃ are reduced to V^IV providing the 15 reduced V^IV centers in the anionic cluster. The compound crystallizes in the non-centrosymmetric orthorhombic space group P2₁2₁2₁ with four formula units in the cell, V =9464:8(4) Å³. The structure features [V₁₅As₆O₄₂(H₂O)]^6- anions which are joinded by Cu²⁺-centered complexes to form linear chains. If a long Cu-O bond is considered as weak intermolecular interaction a three-dimensional network is generated. The compound is partially soluble in water as evidenced by UV/Vis spectroscopy and mass spectra. The magnetic susceptibility of the compound is dominated by strong intra-cluster antiferromagnetic exchange interactions.

Keywords: Polyoxovanadate; Solvothermal Synthesis; Magnetic Properties; Crystal Structure

Received: 2014-7-25

Published Online: 2015-3-19

Published in Print: 2014-12-1

Interconnection of [V₁₅As₆O₄₂(H₂O)]^6- Clusters by Cu²⁺-centered Complexes: Synthesis, Crystal Structure and Selected Properties

Abstract

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