摘要
合成了吡啶—2,6二甲酸铕配合物Na_3[Eu(DPC)_3]·14H_2O(DPC为吡啶—2,6二甲酸根)晶体,对该配合物的红外光谱、荧光光谱、热谱及电导等性质进行了研究.单晶结构分析表明,Na_3[Eu(DPC)_3]·14H_2O属三斜晶系,空间点群P(?).晶胞参数:a=1.1000(10),b=1.7268(22),c=1.0314(14)nm;α=102.53(11)°,β=107.05(8)°,γ=74.53(9)°;V=1.7845nm^3;Z=2;D_c=1.80g/cm^3;μ=18.9cm^(-1).吡啶—2,6二甲酸以三齿配位,铕的配位数为9,其配位多面体为畸变的三帽三角棱柱体.
The title compounds were synthesized and characterized by elemental analysis, thcrmo-analysis (TG-DTA), IR spectra, fluorescence spectra, molar conductivity and X-ray diffraction analysis. The X-ray structure analysis for the complex Na3[Eu(DPC)3] · 14H2O (DPC = pyridine-2, 6-dicarboxylatc) shows that it is a mononuclear complex, the crystal is triclinic, space group PI, with unit cell parameters: a= 1.1000(10), b = 1.7268(22), c = 1.0314(14)nm; α= 102.53(11)° , β= 107.05(8)° , γ = 74.53(9)° ; V=1.7845nm3; Z = 2; De= l.80g.cm-1; μ= 18.9cm and R = 0.073, Rw = 0.085. The pyridine-2, 6-dicarboxylic acid is a tridentatc ligand. The coordination number of europium is nine. The coordination polyhedron can be described as a distorted tri-capped trigonal prism.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1993年第4期418-422,共5页
Chinese Journal of Inorganic Chemistry
关键词
吡啶-2
6二甲酸
铕配合物
晶体结构
pyridine-2,6-dicarboxylic acid europium complex, crystal structure
