摘要
在弱酸性介质中,以硝酸稀土与Cyclam在甲醇-水溶液中反应合成了La-Tb、Y9种离子缔合物。通过元素分析和IR、~1H NMR及DTA-TG研究,推测该类化合物的通式为;L^+L_(0.7)^(2+)·[Ln(NO_3)_6]_(0.8)[Ln(NO_3)_3·3H_2O]_(0.2)·nH_2O(La,Ce:n=3;Pr-Tb,Y:n=2.5,L为Cyclam)。经单晶四圆衍射结构分析,确定了化合物的晶体结构,晶胞参数为:a=1.7000(1)nm,b=1.7000(1)nm,c=1.9862(4)nm,α=β=90°,γ=120°,R3空间群,D_c=1.703g/cm^3,μ(K_a)=132.9cm^(-1)。
The ionic association complexes of La-Tb and Y ions with Cyclam were synthesized from the acidic medium of methanol aqueous solution. Through the investigation of elemental analysis, IR,1H NMR and DTA-TG we propose that the complexes have a general formula L+L0.72+[Ln(NO3)6]0.8[Ln(NO3)3·3H2O]0.2·nH2O(where Ln = La-Tb and Y; n=3 for La and Ce; n = 2.5 for Pr-Tb and Y, L = Cyclam ). The structure of L+L0.7 2+[Nd(NO3)6]0.8[Nd(NO3)3·3H2O]0.2·2. 5H2O was determined by single crystal X-ray diffraction analysis. The lattice parameter are as follows; space group R3, a=1. 7000(1) nm, b = 1.7000(1) nm, c=1. 9862(4) nm, α=90°, β=90°, γ=120°, Dc = 1.703 g/cm3,μ(Ka)= 132.9 cm-1.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1992年第6期720-723,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
CYCLAM
稀土配合物
Cyclam(1 ,4,8,11-tetraazacyclotetradecane) , Lanthanide, Rare earth, Complex
