The crystal structure of (4,4′-dimethyl-2,2′-bipyridyl)tris[3,3,3-trifluoro-1-(2-thenoyl)prop an-2-onato]europium(III), or more commonly (4,4′-dimethyl-2,2′-bipyridyl)tris(2-thenoyltrifluoro-acetonato)euro pium(III), [Eu(C8H4F3O2S)3(C12H12N2)], has been determined. Crystals of the complex emit vivid red light when scratched or fractured. This triboluminescent activity seems to correlate with the non-centrosymmetric crystal structure and disorder of the thienyl rings and CF3 groups which is present here and in similar compounds. While modeling the thienyl-ring disorder, it was noted that the bond angle at the C atom replaced by S is a sensitive sign of even small rotational ring disorder. The coordination geometry of the EuIII ion can be described as square antiprismatic, with coordination by the six O atoms of the three chelating β-diketonate ligands and the two N atoms of the neutral bipyridyl ligand.
|Original language||English (US)|
|Journal||Acta Crystallographica Section C: Crystal Structure Communications|
|State||Published - Jan 2002|
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
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CCDC 180144: Experimental Crystal Structure Determination
Zheng, Z. (Creator), Wang, J. (Creator), Liu, H. (Creator), Carducci, M. D. (Creator), Peyghambarian, N. N. (Creator) & Jabbourb, G. E. (Creator), Cambridge Crystallographic Data Centre, 2002
DOI: 10.5517/cc61g3s, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/cc61g3s&sid=DataCite