二硝酸二(辛基己内酰胺)合铀酰(Ⅱ)配合物的合成和结构

Synthesis and Structure of Dinitrato Bis(octylcaprolactam) Uranyl ( Ⅱ ) Complex

在有机溶剂中合成了UO_2[CH_2(CH_2)4CONC_8H_(17)]_2(NO_3)_2(化学式为C_(28)H_(54)N_4O_(10)U),晶体属三斜晶系,P1空间群,晶胞参数:a=0.8986(2)nm,b=0.9750(2)nm,c=2.3687(4)nm;α=82.70(1)°.β=81.29(2)°,γ=61.67(1)°;V=1.8020(6)nm^3,Z=2,D_c=1.56g/cm^3,R=0.036.配合物中铀酰离子由6个氧原子配位,其中4个来自2个硝酸根,另两个来自2个辛基己内酰胺的羰基.在单胞中,2个配合物分子的4条八原子碳链相互吸引,组成了环状二聚体.

The complex UO2[CH2(CH2)4,CONC8H17]2(NO3)2 was prepared in organic solvent. The crystal belongs to space group P1 of triclinic system. The cell parameters are a=0. 8986(2) nm, b=0.9750(2) nm, c=2. 3687(4) nm, α=82. 70(1), β=81.29(2). γ=61.67(1)°, V = 1. 8020(6) nm3, Z = 2, Dc=1. 56 g/cm3, R=0. 036. The result shows that the central uranyl ion is coordinated by six oxygen atoms , two of them are from the carbonyl groups of two octyl-caprolactam molecules, and the other four are from two nitrate groups. In the crystal cell, a dimer was formed, owing to the attraction of four long carbon chains in the two complex molecules.