Issue 12, 2016
From the journal:

Chemical Communications

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

Bassem S. Bassil,‡ab   Yixian Xiang,‡a   Ali Haider,a   Jaime Hurtado,a   Ghenadie Novitchi,c   Annie K. Powell,de   A. Martin Bossoh,fg   Israël M. Mbomekallé,f   Pedro de Oliveiraf  and  Ulrich Kortz*a  

* Corresponding authors

a Jacobs University, Department of Life Sciences and Chemistry, P.O. Box 750 561, 28725 Bremen, Germany
E-mail: u.kortz@jacobs-university.de
Fax: +49 421 200 3229
Tel: +49 421 200 3235

b Department of Chemistry, Faculty of Sciences, University of Balamand, P.O. Box 100, Tripoli, Lebanon

c Laboratoire National des Champs Magnétiques Intenses, CNRS, 38042 Grenoble Cedex 9, France

d Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131 Karlsruhe, Germany

e Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany

f Laboratoire de Chimie-Physique, Université Paris-Sud, UMR 8000 CNRS, Orsay, France

g Université Félix Houphouët-Boigny, 01 BP V34 Abidjan 01, Ivory Coast

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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Article information

DOI
https://doi.org/10.1039/C5CC09823H
Article type
Communication
Submitted
27 Nov 2015
Accepted
23 Dec 2015
First published
11 Jan 2016

Chem. Commun., 2016,52, 2601-2604

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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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