Combination of Metal Coordination Tetrahedra and Asymmetric Coordination Geometries of Sb(III) in the Organically Directed Chalcogenidometalates: Structural Diversity and Ion-exchange Properties

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• 作者：Mei-Ling Feng ; Kai-Yao Wang and Xiao-Ying Huang
• 关键词：building units ; chalcogens ; crystal structure ; ion exchange ; organic amines
• 刊名：The Chemical Record
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：16
• 期：2
• 页码：582-600
• 全文大小：1279K
• ISSN：1528-0691

文摘

Chalcogenidometalates exhibit rich and diverse structures and properties applicable to ion exchange, thermoelectrics, photocatalysis, nonlinear optics, and so on. This personal account summarizes our recent progress in constructing chalcogenidometalates by combining metal coordination tetrahedra and the asymmetric coordination geometries of Sb³⁺ in the presence of organic species (typically organic amines and metal-organic amine complexes), which has been demonstrated as an effective strategy for synthesizing chalcogenidometalates with diversified structures and interesting properties. The linkage modes of asymmetric SbQ_n (n = 3, 4) geometries and group 13 (or 14) metal coordination tetrahedra are analyzed, and the secondary building units (SBUs), with different compositions and architectures, are clarified. The crucial role and function of organic species in the formation of chalcogenidometalates are explored, with an emphasis on their powerful structure-directing features. In particular, some chalcogenidometalates in this family exhibit excellent ion-exchange properties for Cs⁺ and/or Sr²⁺ ions; the factors affecting ion-exchange properties are discussed to understand the underlying ion-exchange mechanism.