Molten Salt Synthesis and Structural Characterization of Novel Salt-Inclusion Vanadium Bronze Cs5FeV5O13Cl6

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• 作者：Parisa Mahjoor ; Susan E. Latturner
• 刊名：Inorganic Chemistry
• 出版年：2010
• 出版时间：May 17, 2010
• 年：2010
• 卷：49
• 期：10
• 页码：4486-4490
• 全文大小：758K
• 年卷期：v.49,no.10(May 17, 2010)
• ISSN：1520-510X

文摘

Single crystals of a new reduced vanadate phase, Cs₅FeV₅O₁₃Cl₆, have been grown from the reaction of metal oxides V₂O₅ and Fe₂O₃ in the presence of a metal reducing agent in a eutectic CsCl/NaCl flux. This compound adopts a tetragonal structure (P4/nmm, a = 10.943(3) Å, c = 10.535(4) Å, Z = 2) that consists of reduced vanadate layers separated by ionic layers comprised of [FeCl₆]³⁻ anions and Cs⁺ cations. There are two distinct vanadium sites in the structure of this compound; V⁴⁺ is in square pyramidal configuration, and V⁵⁺ has a tetrahedral coordination environment. The ⁵¹V NMR Knight shift and the magnetic susceptibility data indicate the delocalization of the unpaired electron of vanadium. Ferrimagnetic ordering is observed at 5 K.