A Series of Dimeric Selenidogermanates with Lanthanide Complexes of Multidentate Chelating Amines |
| |
| Authors: | Shimei Tang Xing Liu Jian Zhou |
| |
| Institution: | 1.Chongqing Key Laboratory of Inorganic Functional Materials, College of Chemistry,Chongqing Normal University,Chongqing,People’s Republic of China |
| |
| Abstract: | A series of lanthanide selenidogermanates (H3O)Tm(teta)2]Ge2Se6] (1, teta = triethylenetetramine) and Ln(teta)(tren)Cl]2Ge2Se6](en) {en = ethylenediamine, tren = N,N,N- tris(2-aminoethyl)amine, Ln = Pr (2a), Nd (2b), Sm (2c), Eu (2d), Gd (2e), Tb (2f)}were prepared under mild solvothermal conditions and structurally characterized. 1 contains isolated Tm(teta)2]3+ ions, protonated H3O+ ions and dimeric Ge2Se6]4? anions, while 2a–f are composed of Ln(teta)(tren)Cl]3+ ions, dimeric Ge2Se6]4? anions and free en molecules. The lighter lanthanide ions (Pr–Tb) adopt a distorted tricapped trigonal prism with the nine-coordinated number, and the heavier Tm3+ ion adopts a distorted bicapped trigonal prism with the eight-coordinated number. Their band gaps in the range of 1.52–1.86 eV are derived from optical absorption spectra. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
