Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1410156 | Journal of Molecular Structure | 2010 | 4 Pages |
Abstract
As a result of the reaction between Dy(dbm)3·2H2O and chiral ligands LS,S(+)-4,5-pinene bipyridine or LR,R(â)-4,5-pinene bipyridine, a novel DyIII-based enantiomeric pair, Dy(dbm)3LS,S and Dy(dbm)3LR,R, has been obtained and characterized by X-ray single crystal determination and spectroscopic methods. The crystal structure analysis of 1 and 2 reveals that they crystallize in chiral space group P21 of monoclinic system. The central DyIII ion is eight-coordinated with six oxygen atoms of three β-diketonate anions and two nitrogen atoms of chiral pinene bipyridine, forming a coordination polyhedron best described as the distorted square antiprism. The CD spectra reflect that complexes 1 and 2 are enantiomers. Thermogravimetric analysis results indicate that 1 and 2 are thermally stable up to 249 °C.
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Authors
Xi-Li Li, Lai-Fu He, Shao-Ming Fang, Hong-Ping Xiao,