Spin Glass Behaviour in a 1D Mixed Molybdenum-Vanadium Heteropolyoxometalate-Bridged Coordination Polymer

A 1D trimetallic coordination polymer containing mixed molybdenum‐vanadium heteropolyoxometalate bridges, {[Ni(phen)2(H2O)]2[Ni(phen)2][VIV8MoVI6MoV2O40(PO4)]}{[Ni(phen)2(H2O)]2[VIV8MoVI6MoV2O40(PO4)2]}·5H2O·2EtOH (1) (phen = 1,10‐phenanthroline, EtOH = ethanol), has been synthesised hydrothermally....

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Bibliographic Details
Published in:European journal of inorganic chemistry 2004-12, Vol.2004 (24), p.4774-4779
Main Authors: Liu, Cai-Ming, Luo, Jian-Lin, Zhang, De-Qing, Wang, Nan-Lin, Chen, Zhao-Jia, Zhu, Dao-Ben
Format: Article
Language:English
Subjects:
Crystal structure
Hydrothermal synthesis
Magnetic properties
Nickel
Polyoxometalate
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Summary:A 1D trimetallic coordination polymer containing mixed molybdenum‐vanadium heteropolyoxometalate bridges, {[Ni(phen)2(H2O)]2[Ni(phen)2][VIV8MoVI6MoV2O40(PO4)]}{[Ni(phen)2(H2O)]2[VIV8MoVI6MoV2O40(PO4)2]}·5H2O·2EtOH (1) (phen = 1,10‐phenanthroline, EtOH = ethanol), has been synthesised hydrothermally. An X‐ray crystallographic study revealed that 1 is composed of 1D zigzag chains of {[Ni(phen)2(H2O)]2[Ni(phen)2][VIV8MoVI6MoV2O40(PO4)]}nn+ cations, {[Ni(phen)2(H2O)]2 [VIV8MoVI6MoV2O40(PO4)2]}− anions and solvent molecules. Both the cation and the anion in 1 are mixed molybdenum‐vanadium heteropolyoxometalates with covalently linked nickel complex fragments. Magnetic investigations of 1 indicate spin glass behaviour and several magnetic transitions occur at low temperatures (below 20 K). (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)
ISSN:1434-1948
1099-0682
DOI:10.1002/ejic.200400593