[Cu(1,10-phen)(L-Ile)(H_2O)]·NO_3的合成、结构及其表征

Synthesis, Structure and Characterization of 1,10-Phenanthroline-Copper(Ⅱ)-L-Isoleucine Complex

合成了三元混配配合物 [Cu(1,10 - phen) (L- Ile) (H2 O) ]NO3 (1,10 - phen=1,10 -邻菲咯啉 ,L- Ile=L-异亮氨酸 ) ,并用元素分析、X射线衍射、摩尔电导、红外、紫外等手段对混配配合物进行了表征。晶体结构分析表明 :配合物晶体的空间群为 P2 1,晶胞参数 :a=1.1835 (5 ) nm,b=0 .6 775 (5 ) nm,c=1.332 8(5 ) nm,β=90 .74 5 (5 )°,V=1.0 6 86 (10 ) mm3 ,μ=1.0 6 2 mm-1,Dc=1.4 11g/ cm3 ,F(0 0 0 ) =4 70 ,R=0 .0 5 5 1,Rw=0 .0 4 6 9。分子中 Cu( )离子与一个 L- Ile(N,O)配体、一个 1,10 - phen(N,N)配体及 H2 O(O)配位形成五配位的变形四方锥构型。

A new complex [Cu(1,10-phen)(L-Ile)(H 2O)]·NO 3 has been synthesized, and characterized by elemental analysis, molar conductivity, infrared spectra, ultraviolet-visible spectra and X-ray diffraction method, where L-Ile=L-isoleucine, and 1,10-phen=1,10-phenanthroline. Crystal structure data show that the crystal belongs to the monoclinic, space group P2 1, with a=1 1835(5)nm,b=0 6775(5)nm,c=1 3328(5)nm,β=90 745(5)°,V=1 0686(10)nm 3,μ=1 062mm -1 ,D c=1 411g/cm 3,F(000)=470,R=0 0551,R w=0 0469. The [Cu(1,10-phen)(L-Ile)(H 2O)] + ion has a distorted square-pyramidal geometry, in which Cu 2+ coordinates with two nitrogen atoms of 1,10-phen, the amino nitrogen atom and one carboxylate oxygen atom of L-Ile at the equatorial positions, and one water oxygen atom at the axial position.