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Inorg Chem. 2016 Jul 18;55(14):7167-75. doi: 10.1021/acs.inorgchem.6b01210. Epub 2016 Jul 01.

Compositional and Structural Versatility in an Unusual Family of anti-Perovskite Fluorides: [Cu(H2O)4]3[(MF6)(M'F6)].

Inorganic chemistry

Justin B Felder, Jeongho Yeon, Mark D Smith, Hans-Conrad Zur Loye

Affiliations

  1. Department of Chemistry and Biochemistry, University of South Carolina , Columbia, South Carolina 29208, United States.

PMID: 27367900 DOI: 10.1021/acs.inorgchem.6b01210

Abstract

A series of six anti-perovskite fluorides of the type [Cu(H2O)4]3(M1-xM'xF6)2 (where M and M' = V, Cr, Mn, Fe as well as M = Fe and M' = V and Cr) was synthesized as high-quality single crystals via a mild hydrothermal route. These materials belong to a class of perovskite-based structures in which the anions and cations of the regular ABX3 perovskite structure have exchanged positions. Two complex anions, MF6(3-) and M'F6(3-), occupy the normal A and B cation positions, while three complex cations, [Cu(H2O)4](2+), occupy the normally anionic X positions. As in the ABX3 compositions, the A and B positions can be occupied by different complex anions, allowing for the preparation of a wide range of compositions. Magnetic property measurements were performed on all six phases, and complex magnetic behavior was observed at low temperatures in the Mn, Fe, and bimetallic Fe/V and Fe/Cr phases.

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