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Journal Article

The new nickel tellurite chloride compound Ni15Te12O34Cl10 - synthesis, crystal structure and magnetic properties

MPS-Authors
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Zhang,  D.
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;
Research Group Solid State Nanophysics (Jurgen H. Smet), Max Planck Institute for Solid State Research, Max Planck Society;

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Johnsson,  M.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;
Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Kremer,  R. K.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Zhang, D., Johnsson, M., Lidin, S., & Kremer, R. K. (2013). The new nickel tellurite chloride compound Ni15Te12O34Cl10 - synthesis, crystal structure and magnetic properties. Dalton Transactions, 42(5), 1394-1399.


Cite as: https://hdl.handle.net/21.11116/0000-000E-C55D-C
Abstract
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 (1) over bar with the pseudomonoclinic cell parameters a = 10.3248(6) angstrom, b = 10.3249(6) angstrom, c = 11.6460(8) angstrom, alpha = 73.782(6)degrees, beta = 73.782(6)degrees, gamma = 63.51(2)degrees, Z = 1, R-1 = 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 similar to 50 K and similar to 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.