Aparna, K. ; Krishnamurthy, S. S. ; Nethaji, M. ; Balaram, P. (1994) Amino acid-lanthanide interactions. Crystal structures of lanthanide complexes of α- amino isobutyric acid (Aib), [La2(Aib)4(H2O)8](ClO4) 6 and [Pr2(Aib)4(H2O)8]Cl6·H2O Polyhedron, 13 (21). pp. 2993-2997. ISSN 0277-5387
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S02775...
Related URL: http://dx.doi.org/10.1016/S0277-5387(00)83419-1
Abstract
The structures of [La2(Aib)4(H2O)8](ClO4) 6 (1) and [Pr2(Aib)4(H2O)8]Cl6·H 2O (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 complexes.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 17786 |
| Deposited On: | 16 Nov 2010 12:41 |
| Last Modified: | 13 Jul 2012 11:15 |
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