论文部分内容阅读
用复分解法合成了巴豆酸镧四核配合物(C48H60La4O35)。通过元素分析、IR、EDTA滴定和热重分析对其组成进行了表征,并用X射线单晶衍射测定了该配合物的晶体结构。分析表明,晶体属三斜晶系,P1-空间群a=14.819(3),b=15.290(3),c=15.430(3),α=92.23(3)°,β=92.83(3)°,γ=94.77(3)°,V=3476.3(12)3,Z=2,Dc=1.674g/cm3,μ(MoKα)=2.493mm-1,F(000)=1712,R1=0.0342,wR2=0.0947,[I>2σ(I)]。在每个配位单元中,每个La(Ⅲ)与三个巴豆酸中的羧基氧(-COO-)以双齿螯合,La(Ⅲ)与La(Ⅲ)之间由羧基氧桥连,形成四核配合物。
The tetranuclear complex of lanthanum (C48H60La4O35) was synthesized by the double decomposition method. Its composition was characterized by elemental analysis, IR, EDTA titration and thermogravimetric analysis. The crystal structure of the complex was determined by X-ray single crystal diffraction. The analysis shows that the crystal belongs to the triclinic system. The P1-space group a = 14.819 (3), b = 15.290 (3), c = 15.430 (3), α = 92.23 (3) ° and β = 92.83 , γ = 94.77 (3) °, V = 3476.3 (12) 3, Z = 2, Dc = 1.674 g / cm3, μ (MoKα) = 2.493 mm -1, F (000) = 1712, = 0.0947, [I> 2σ (I)]. In each coordination unit, each La (III) chelates bidentate with carboxyl oxygen (-COO-) in three crotonic acids, and the bridge between La (III) and La (III) , Forming a tetranuclear complex.