Title of article :
Syntheses, structural and spectroscopic investigation (IR, NMR and luminescence) of new terbium and europium acylpyrazolonates
Author/Authors :
Claudio Pettinari، نويسنده , , Fabio Marchetti، نويسنده , , Augusto Cingolani، نويسنده , , Andrey Drozdov، نويسنده , , Ivan Timokhin، نويسنده , , Sergey I. Troyanov، نويسنده , , Vera Tsaryuk، نويسنده , , Vladislav Zolin، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2004
Abstract :
The synthesis and characterization of new lanthanide complexes of formulae [M(Q)3(H2O)(EtOH)], NBu4[M(Q)4] and [M(Q)3(L)] (M = Eu or Tb; HQ = 1-phenyl-3-methyl-4-R-pyrazol-5-one: R = cyclopentylcarbonyl, HQ = HQCP; R = cyclopentylpropionyl, HQ = HQEtCP; L = 1,10-phenanthroline (phen) or 4,7-diphenyl-1,10-phenanthroline (bathophen)) are reported. The crystal structure of the tetrakis (β-diketonate) complex [NBu4][Eu(QETCP)4] containing an eight-coordinated Eu atom in a distorted square antiprismatic environment has been determined. Luminescence studies have been performed on selected derivatives: the data suggested a strong influence of the nature of the acyl moiety in Q ligands and of Ph groups in bathophen (with respect to phen) on the luminescence properties.
Keywords :
Lanthanides , ?-Diketones , Luminescence , Structures , NMR
Journal title :
INORGANICA CHIMICA ACTA
Journal title :
INORGANICA CHIMICA ACTA