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Z. Naturforsch. 2013,
68b, 133 – 137
doi:10.5560/ZNB.2013-2245
Solvothermal Syntheses and Characterization of Three Lanthanide Thioantimonates(V) with Mixed Ethylene Polyamines
1 College of Chemistry, Chongqing Normal University, Chongqing, 401331, P. R. China
2 College of Chemistry and Material, Yulin Normal University, Yulin 537000, P. R. China
Reprint requests to Prof. Dr. Jian Zhou. E-mail:
jianzhou888888@163.com or
jianzhou888888@yahoo.com.cn
Received September 1, 2012 / published online February 20, 2013
Three new lanthanide thioantimonates(V) [Ln(en)(teta)(SbS4)] {Ln = Sm (1), Eu (2), Gd (3); en = ethylenediamine; teta = triethylenetetramine} have been solvothermally synthesized and structurally characterized. Compounds 1–3 are isostructural. The [SbS4]3− anion acting as bichelating ligand is bound to the [Ln(en)(teta)]3+ ion, resulting in a neutral complex [Ln(en)(teta)(SbS4)]. The central Ln3+ ion lies within an eight-coordinate environment forming a distorted bicapped trigonal prism LnN6S2. Although a few lanthanide thioantimonates have been reported to date, they only contain one type of ethylene
polyamine. Compounds 1–3 are rare examples of lanthanide thioantimonates with mixed ethylene polyamine ligands. The absorption edges of 1.75 eV for 1 and 2.27 eV for 3 have been derived from optical absorption spectra.
Key words: Lanthanide, Thioantimonates, Complex, Solvothermal Syntheses, Crystal Structure