Synthesis, spectra and crystal structure of bis(1,10-phenanthroline)di({mu}-{alpha}-methylacrylato) lanthanide(III) dimers
Journal Article
·
· Journal of Coordination Chemistry
OSTI ID:554912
- Hangzhou Univ. (China); and others
The homodinuclear complexes, [RE/(CH{sub 2}C(CH{sub 3})COO){sub 3}(phen)]{sub 2} (RE=La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Y, phen=1,10-phenanthroline), have been synthesized and characterized by elemental analysis, molar conductance, IR and NMR. The complex [La(CH{sub 2}C(CH{sub 3})COO){sub 3}(phen)(HL)]{sub 2} (HL)=CH{sub 2}C(CH{sub 3})COOH crystallizes in the monoclinic space group P2{sub 1}/c with Z = 2. Cell dimensions are a = 9.878(2), b = 11.07(1), c = 26.528(3) {angstrom}, {beta} = 94.02(1){degrees} and the structure was refined to R = 0.036 for 4136 observed reflections. The structure consists of a centrosymmetric dinuclear molecule. Lanthanum(III) atoms are bridged by two bidentate and two terdentate carboxylato groups with an La...La separation of 4.0456(4) {angstrom}. Each lanthanum(III) atom is nine-coordinated and exhibits a slightly distorted, tricapped, trigonal prism. The La-O and La-N bond distances are in the range 2.473-2.738 and 2.696-2.722 {angstrom}, respectively. 12 refs.
- OSTI ID:
- 554912
- Journal Information:
- Journal of Coordination Chemistry, Journal Name: Journal of Coordination Chemistry Journal Issue: 1-2 Vol. 40; ISSN JCCMBQ; ISSN 0095-8972
- Country of Publication:
- United States
- Language:
- English
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