Aparna, K and Krishnamurthy, SS and Nethaji, M and Balaram, P (1994) Amino acid-lanthanide interactions. Crystal structures of lanthanide complexes of Alpha-amino isobutyric acid (Aib), [La2(Aib)4(H2O)8](ClO4)6 and [Pr2(Aib)4(H2O)8]Cl6·H2O. In: Polyhedron, 13 (21). pp. 2993-2997.
|
PDF
krishnamurthy1a.pdf Download (396kB) |
Abstract
The structures of [La2(Aib)4(H2O)8](ClO4)6 (1) and [Pr2(Aib)4(H2O)8]Cl6·H2O (2) have been determined by X-ray crystallography and show that the two lanthanide cations are bridged by carboxyl groups of our Aib molecules and are surrounded by four oxygen atoms from water molecules thus making the coordination number 8. The geometry around the lanthanum ion in 1 is a distorted bicapped trigonal prism whereas the praseodymium ion in 2 exhibits a square antiprismatic arrangement of the ligands. Coordination mode of Aib is compared with that in other metal
Item Type: | Journal Article |
---|---|
Publication: | Polyhedron |
Publisher: | Elsevier Science Ltd. |
Additional Information: | Copyright of this article belongs to Elsevier Science Ltd. |
Keywords: | lanthanide;amino acid;ligands;x ray crystallography |
Department/Centre: | Division of Chemical Sciences > Inorganic & Physical Chemistry Division of Biological Sciences > Molecular Biophysics Unit |
Date Deposited: | 29 Jun 2004 |
Last Modified: | 19 Sep 2010 04:12 |
URI: | http://eprints.iisc.ac.in/id/eprint/433 |
Actions (login required)
View Item |