Felder Justin B, Yeon Jeongho, Smith Mark D, Zur Loye Hans-Conrad
Department of Chemistry and Biochemistry, University of South Carolina , Columbia, South Carolina 29208, United States.
Inorg Chem. 2016 Jul 18;55(14):7167-75. doi: 10.1021/acs.inorgchem.6b01210. Epub 2016 Jul 1.
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, 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.
通过温和的水热法合成了一系列六种通式为[Cu(H₂O)₄]₃(M₁₋ₓM'ₓF₆)₂的反钙钛矿氟化物单晶（其中M和M' = V、Cr、Mn、Fe，以及M = Fe且M' = V和Cr）。这些材料属于一类基于钙钛矿的结构，其中常规ABX₃钙钛矿结构的阴离子和阳离子交换了位置。两个复合阴离子MF₆³⁻和M'F₆³⁻占据正常的A和B阳离子位置，而三个复合阳离子[Cu(H₂O)₄]²⁺占据通常的阴离子X位置。与ABX₃组成一样，A和B位置可以被不同的复合阴离子占据，从而能够制备出多种组成。对所有六个相进行了磁性测量，在Mn、Fe以及双金属Fe/V和Fe/Cr相中，在低温下观察到了复杂的磁性行为。
