TY - JOUR
T1 - Luminescence and structural studies of yttrium and heavier lanthanide-picrate complexes with pentaethylene glycol
AU - Kusrini, Eny
AU - Saleh, Muhammad Idiris
PY - 2009/8/15
Y1 - 2009/8/15
N2 - The monoclinic structural isomers with molecular formula of [M(Pic)2(EO5)](Pic) where EO5 = pentaethylene glycol, Pic = picrate anion, and M = Gd, Tb, Er, Tm, Yb, and Y have been synthesized and characterized. The current study was conducted in the solid state to evaluate the coordination pattern of the central metal ion with the EO5 ligand in the presence of Pic anion. The photoluminescence (PL) spectra of the Tb and Yb complexes have the typical 4f-4f transition emissions of Tb(III) and Yb(III) ions. The Gd, Er, Tm, and Y complexes had broad bands resulting from the ligands. The counteranion factor influenced the emission intensity in the Tb-Pic-EO5 and Tb-NO3-EO5 complexes in several solvents also were studied. The Pic anion acts as a quencher in the [Tb(Pic)2(EO5)](Pic) complex due to the nitro withdrawing groups was clearly observed both in solution and the solid state.
AB - The monoclinic structural isomers with molecular formula of [M(Pic)2(EO5)](Pic) where EO5 = pentaethylene glycol, Pic = picrate anion, and M = Gd, Tb, Er, Tm, Yb, and Y have been synthesized and characterized. The current study was conducted in the solid state to evaluate the coordination pattern of the central metal ion with the EO5 ligand in the presence of Pic anion. The photoluminescence (PL) spectra of the Tb and Yb complexes have the typical 4f-4f transition emissions of Tb(III) and Yb(III) ions. The Gd, Er, Tm, and Y complexes had broad bands resulting from the ligands. The counteranion factor influenced the emission intensity in the Tb-Pic-EO5 and Tb-NO3-EO5 complexes in several solvents also were studied. The Pic anion acts as a quencher in the [Tb(Pic)2(EO5)](Pic) complex due to the nitro withdrawing groups was clearly observed both in solution and the solid state.
KW - Heavier lanthanide
KW - Pentaethylene glycol
KW - Photoluminescence
KW - X-ray crystal structures
UR - http://www.scopus.com/inward/record.url?scp=67849118617&partnerID=8YFLogxK
U2 - 10.1016/j.ica.2009.05.045
DO - 10.1016/j.ica.2009.05.045
M3 - Article
AN - SCOPUS:67849118617
VL - 362
SP - 4025
EP - 4030
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
SN - 0020-1693
IS - 11
ER -