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Solvothermal syntheses, and characterization of [ Ln(en) 4(SbSe 4)] ( Ln=Ce, Pr) and [ Ln(en) 4]SbSe 4·0.5en ( Ln=Eu, Gd, Er, Tm, Yb): The effect of lanthanide contraction on the crystal structures of lanthanide selenidoantimonates(V)

Jia, Dingxian ; Zhu, Aimei ; Jin, Qinyan ; Zhang, Yong ; Jiang, Wenqing

Journal of Solid State Chemistry, 2008, Vol.181(9), pp.2370-2377 [Tạp chí có phản biện]

ISSN: 0022-4596 ; DOI: 10.1016/j.jssc.2008.05.040

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  • Nhan đề:
    Solvothermal syntheses, and characterization of [ Ln(en) 4(SbSe 4)] ( Ln=Ce, Pr) and [ Ln(en) 4]SbSe 4·0.5en ( Ln=Eu, Gd, Er, Tm, Yb): The effect of lanthanide contraction on the crystal structures of lanthanide selenidoantimonates(V)
  • Tác giả: Jia, Dingxian ; Zhu, Aimei ; Jin, Qinyan ; Zhang, Yong ; Jiang, Wenqing
  • Chủ đề: Lanthanide ; Selenidoantimonates ; Antimony ; Solvothermal Synthesis ; Lanthanide Contraction
  • Là 1 phần của: Journal of Solid State Chemistry, 2008, Vol.181(9), pp.2370-2377
  • Mô tả: Two types of lanthanide selenidoantimonates [ Ln(en) 4(SbSe 4)] ( Ln=Ce( 1a), Pr( 1b)) and [ Ln(en) 4]SbSe 4·0.5en ( Ln=Eu( 2a), Gd( 2b), Er( 2c), Tm( 2d), Yb( 2e); en=ethylenediamine) were solvothermally synthesized by reactions of LnCl 3, Sb and Se with the stoichiometric ratio in en solvent at 140 °C. The four-en coordinated lanthanide complex cation [ Ln(en) 4] 3+ formed in situ balances the charge of SbSe 4 3− anion. In compounds 1a and 1b, the SbSe 4 3− anion act as a monodentate ligand to coordinate complex [ Ln(en) 4] 3+ and the neutral compound [ Ln(en) 4(SbSe 4)] is formed. The Ln 3+ ion has a nine-coordinated environment involving eight N atoms and one Se atom forming a distorted monocapped square antiprism. In 2a–2e the lanthanide(III) ion exists as isolated complex [ Ln(en) 4] 3+, in which the Ln 3+ ion is in a bicapped trigonal prism geometry. A systematic investigation of the crystal structures reveals that two types of structural features of these lanthanide selenidoantimonates are related with lanthanides contraction across the lanthanide series. TG curves show that compounds 1a– 1b and 2a– 2e remove their organic components in one and two steps, respectively. Two types of lanthanide selenidoantimonates [ Ln(en) 4(SbSe 4)] ( Ln=Ce, Pr) and [ Ln(en) 4]SbSe 4·0.5en ( Ln=Eu, Gd, Er, Tm, Yb; en=ethylenediamine) have been synthesized under the mild solvothermal conditions, and a systematic investigation of the crystal structures reveals that two types of structural features of these lanthanide selenidoantimonates are related with lanthanides contraction across the lanthanide series.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0022-4596 ; DOI: 10.1016/j.jssc.2008.05.040

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