Synthese,Kristallstrukturen und Eigenschaften von Lanthanoid(III)-Komplexen mit 7-Oxa-bicyclo[2.2.1]heptan-2,3-dicarbonsäure |
| |
Authors: | G. Schü chner,G. Fechtel,U. Baumeister,H. Hartung |
| |
Abstract: | Synthesis, Crystal Structures, and Properties of Lanthanoid(III) Complexes with 7-Oxa-bicyclo[2.2.1]heptane-2,3-dicarboxylic Acid The synthesis of coordination compounds [ML(HL)(H2O)] with M = La3+, Ce3+, Pr3+, Nd3+ and H2L = 7-oxa-bicyclo[2.2.1]heptane-2-exo,3-cis-dicarboxylic acid ( 1 ) has been described. Results of IR spectroscopy and thermal decomposition are given. As a result of X-ray analyses, the four investigated lanthanoid(III) complexes are isotypic. Their stereochemistry approximates to the tri-capped trigonal prism with nine O atoms coordinating the metal atom. The bicyclic ligand acts as a tridentate chelating monoanion HL? as well as a pentadentate dianion L2? with both chelating and bridging function. One coordination place at the metal atom is occupied by a water molecule. |
| |
Keywords: | Lanthanoid(III) carboxylate complexes synthesis crystal structure IR spectra thermal decomposition |
|
|