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Issue 12, 2016
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Heptanickel(ii) double-cubane core in wells-dawson heteropolytungstate, [Ni7(OH)6(H2O)6(P2W15O56)2]16−

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Abstract

The hepta-Ni2+-containing 30-tungsto-4-phosphate(V) [Ni7(OH)6(H2O)6(P2W15O56)2]16− (1) has been synthesized in aqueous, slightly basic medium under conventional reaction conditions, and charactarized via different physical methods. Single-crystal XRD showed that 1 consists of a corner-fused double-cubane {Ni7(OH)6(H2O)6}8+ fragment sandwiched by two trilacunary [P2W15O56]12− units. Polyanion 1 is solution-stable as shown by 31P NMR. Ferromagnetic coupling interaction between the 7 paramagnetic centers of the double-cubane core in 1 with a S = 7 ground state was demonstrated. Electrochemical studies were also performed on 1.

Graphical abstract: Heptanickel(ii) double-cubane core in wells-dawson heteropolytungstate, [Ni7(OH)6(H2O)6(P2W15O56)2]16−

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Supplementary files

Article information


Submitted
27 Nov 2015
Accepted
23 Dec 2015
First published
11 Jan 2016

Chem. Commun., 2016,52, 2601-2604
Article type
Communication

Heptanickel(II) double-cubane core in wells-dawson heteropolytungstate, [Ni7(OH)6(H2O)6(P2W15O56)2]16−

B. S. Bassil, Y. Xiang, A. Haider, J. Hurtado, G. Novitchi, A. K. Powell, A. M. Bossoh, I. M. Mbomekallé, P. de Oliveira and U. Kortz, Chem. Commun., 2016, 52, 2601
DOI: 10.1039/C5CC09823H

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