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Solvothermal synthesis and characterization of polyselenidoarsenate salts of transition metal complex cations

Jia, Dingxian ; Zhao, Jing ; Pan, Yingli ; Tang, Weiwei ; Wu, Bing ; Zhang, Yong

Inorganic chemistry, 01 August 2011, Vol.50(15), pp.7195-201 [Tạp chí có phản biện]

E-ISSN: 1520-510X ; PMID: 21732587 Version:1 ; DOI: 10.1021/ic2007809

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  • Nhan đề:
    Solvothermal synthesis and characterization of polyselenidoarsenate salts of transition metal complex cations
  • Tác giả: Jia, Dingxian ; Zhao, Jing ; Pan, Yingli ; Tang, Weiwei ; Wu, Bing ; Zhang, Yong
  • Chủ đề: Chemical Bonds -- Analysis ; Molecular Structure -- Analysis ; Selenium Compounds -- Chemical Properties ; Selenium Compounds -- Thermal Properties ; Selenium Compounds -- Structure ; Transition Metal Compounds -- Chemical Properties ; Transition Metal Compounds -- Thermal Properties ; Transition Metal Compounds -- Structure
  • Là 1 phần của: Inorganic chemistry, 01 August 2011, Vol.50(15), pp.7195-201
  • Mô tả: The polyselenidoarsenates [Fe(phen)(3)][As(2)Se(6)] (1), [Zn(phen)(dien)][As(2)Se(6)]·2phen (2), [{Mn(phen)(2)}(2)(μ-η(2),η(2)-AsSe(4))](2)[As(2)Se(6)]·H(2)O (3), and [Ni(phen)(3)][As(2)Se(2)(μ-Se(3))(μ-Se(5))] (4) (dien = diethylenetriamine and phen = 1,10-phenanthroline) were prepared by the reaction of As(2)O(3), Se, dien, and phen in the presence of transition metals in a methanol solvent under solvothermal conditions. Compounds 1-3 consist of [As(2)Se(6)](2-) anions with [Fe(phen)(3)](2+), [Zn(phen)(dien)](2+), and [{Mn(phen)(2)}(2)(μ-η(2),η(2)-AsSe(4))](+) complex counter cations, respectively. The [As(2)Se(6)](2-) anion is formed from two As(III)Se(3) trigonal pyramids linked through two Se-Se bonds. Compound 3 is the first example of a mixed-valent selenidoarsenate(III,V) and exhibits the coexistence of As(III)Se(3) trigonal pyramidal and As(V)Se(4) tetrahedral units. Compound 4 is composed of a helical chain of [As(2)Se(2)(μ-Se(3))(μ-Se(5))(2-)](∞) and octahedral [Ni(phen)(3)](2+) cations. The [As(2)Se(2)(μ-Se(3))(μ-Se(5))(2-)](∞) chain is constructed from AsSe(+) units alternatively linked by μ-Se(3)(2-) and μ-Se(5)(2-) bridging ligands. When the structures of compounds 1-4 are compared, the transition metal ions show different structural directing effects during the synthesis of arsenic polyselenides in methanol. Compounds 1, 2, 3, and 4 exhibit semiconducting properties with band gaps of 1.88, 2.29, 1.82, and 2.01 eV, respectively.
  • Ngôn ngữ: English
  • Số nhận dạng: E-ISSN: 1520-510X ; PMID: 21732587 Version:1 ; DOI: 10.1021/ic2007809

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