几种Eu^(3+)—β二酮配合物的精细荧光光谱研究

STUDIES ON THE FINE FLUORESCENCE SPECTRA OF SEVERAL Eu(Ⅲ)—β—DIKETONATE COMPOUNDS

测定了六种Eu^3+—β二酮三元配合物(EuL_3Phen,EuL_3Bpy,EuL_3~3Phen,Eu L_3~3H_2O,EuL_3·2TPPO和(EuL_4)^-(Hpip)^+,其中L=1—乙酰乙酰吲哚阴离子,L^3=3—乙酰乙酰吲哚阴离子,Phen=1,10—邻菲啰啉,Bpy=2,2′—联吡啶,TPPO=三苯基氧化膦,Hpip=哌啶阴离子)在77K时的精细荧光光谱。根据配位场中f^6组态,荧光和点对称性关系确定了六个配合物中Eu(Ⅲ)位置的对称性。

The fluorescence spectra of six Eu^(3+)—β—diketonate(EuL_3Phen,EuL_3Bpy,EuL_3~3Phen,EuL_3~3H_2O,EuL_3·2TPPO,(EuL_4)^-(Hpip);L=1-indoleacetylacetonate,L^3=3-indoleacetyl-acetonate,Phen=1,10-phenanthroline,Bpy=2,2'-bipyridine,Hpip=cation of piperidine,TPPO=triphenylphosphine)are investi-g-ated under high resolution at Low temperature(77K).The symmet-ries of the compounds are assigned by the group theoretical method.