A Two-Dimensional ReIVAgI Compound: X-ray Structure and Magnetic Properties
A Two-Dimensional ReIVAgI Compound: X-ray Structure and Magnetic Properties
复制标题
二维 ReIVAgI 化合物：X 射线结构和磁性
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
J. Faus
中科院分区：
文献类型：
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作者：
J. Martínez;D. Armentano;G. Munno;F. Lloret;M. Julve;J. Faus
通过[ReCl_6]~（2-）和Ag ~+离子的酸化水溶液反应，制备了通式为[Ag_2 ReCl_6]_n（1）的层状ReIV Ag I杂环聚合物。它的结构已通过单晶X射线衍射确定，并在1.9 - 250 K的温度范围内研究了其磁性行为。六氯铼（IV）单元存在于1中，并对银（I）阳离子采用六齿-单齿配位模式，这是三配位的，导致波纹状的二维结构。每一层都是由八面体组成，八面体共享所有的边，重复单元是单个μ-氯桥接的Re−Ag对。1的磁行为对应于三维反铁磁体的磁行为，磁化率在26 K处最大。短的内部和层间Re−Cl···Cl−Re接触解释了这种反铁磁有序。
A heterobimetallic ReIVAgI sheetlike polymer of formula [Ag2ReCl6]n (1) has been prepared by reaction between acidified aqueous solutions of [ReCl6]2- and Ag+ ions. Its structure has been determined by single-crystal X-ray diffraction and its magnetic behavior has been investigated in the temperature range 1.9−250 K. The hexachlororhenate(IV) unit is present in 1 and adopts the hexakis-monodentate coordination mode toward the silver(I) cations, which are three-coordinated, leading to a corrugated two-dimensional structure. Each layer is made up of octahedrons that share all of their edges, with the repeating unit being the single μ-chloro-bridged Re−Ag pair. The magnetic behavior of 1 corresponds to that of a three-dimensional antiferromagnet with a susceptibility maximum at 26 K. Short intra- and interlayer Re−Cl···Cl−Re contacts account for this antiferromagnetic ordering.