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Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education)/College of Physics, Jilin University, Changchun 130012, P. R. China
; Fax: +86 431 851 55 126
; Tel: +86 431 851 55 126
Department of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden
; Fax: +46 8 152187
; Tel: +46 8 162169
Division of Polymer and Materials Chemistry, Lund University, Box 124, SE-221 00 Lund, Sweden
; Fax: +46 46 222 40 12
; Tel: +46 46 222 47 69
Max Planck Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart, Germany
; Fax: +49 711 689 1689
; Tel: +49 711 689 1688
Dalton Trans., 2013,42, 1394-1399
18 Sep 2012,
24 Oct 2012
First published online
24 Oct 2012
A new nickel tellurite oxohalide, Ni15Te12O34Cl10, has been prepared by chemical vapour transport reactions and the crystal structure was determined by single-crystal X-ray diffraction. The compound crystallizes in the triclinic space group P with the pseudomonoclinic cell parameters a = 10.3248(6) Å, b = 10.3249(6) Å, c = 11.6460(8) Å, α = 73.782(6)°, β = 73.782(6)°, γ = 63.51(2)°, Z = 1, R1 = 0.0264. The Ni2+ ions have octahedral [NiO6] and [NiO4Cl2] coordinations, the Te4+ ions have one-sided [TeO3] and [TeO4] coordinations. The crystal structure can be described as consisting of nickel oxide ribbons extending along (001) that are connected by corner sharing [TeO3] and [TeO4] groups to build the open framework structure. The chlorine atoms and the Te-lone pairs are facing voids in the oxide framework. The new compound undergoes two successive antiferromagnetic ordering transitions at 50 K and 10 K. The Curie–Weiss temperature obtained from detailed evaluation of the high-temperature magnetic susceptibilities is positive indicating predominant ferromagnetic superexchange interactions between the Ni magnetic moments.
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