TY - JOUR
T1 - A triboluminescent europium(III) complex
AU - Zheng, Zhiping
AU - Wang, Jiafu
AU - Liu, Hui
AU - Carducci, Michael D.
AU - Peyghambarian, Nasser
AU - Jabbourb, Ghassan E.
PY - 2002/1
Y1 - 2002/1
N2 - 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.
AB - 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.
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U2 - 10.1107/S0108270101016432
DO - 10.1107/S0108270101016432
M3 - Article
C2 - 11781472
AN - SCOPUS:0036303764
VL - 58
SP - m50-m52
JO - Acta Crystallographica Section C: Crystal Structure Communications
JF - Acta Crystallographica Section C: Crystal Structure Communications
SN - 0108-2701
IS - 1
ER -