吡啶-4-甲醛缩氨基脲锌(Ⅱ)配合物的合成及其晶体结构(英文)

Synthesis and Crystal Structure of Zinc(Ⅱ) Complex with Schiff Base from Pyridine-4-aldehyde and Semicarbazone

利用水热法合成了标题化合物[Zn(H4FoPyS)2(H2O)4](NO3)2.3(H2O)(1,H4FoPyS为希夫碱吡啶-4-甲醛缩氨基脲),其结构经IR,元素分析,单晶X-射线衍射和热重分析表征。1的晶体结构属三斜晶系,空间群P,īa=9.6505(16),b=12.644(2),c=13.156(2),α=115.459(3)°,β=90.0290(10),°γ=111.792(3),V=1321.1(4)3,Dc=1.609 g.cm-3,Z=2,M r=647.84,μ=1.905 mm-1和F(000)=728,最终偏差因子分别为R1=0.0365和wR2=0.0878。1中Zn(Ⅱ)是六配位的稍变形八面体构型,其中2个吡啶氮原子和2个配位水分子占据赤道平面,另外2个配位水分子处于轴向位置。

A novel zinc （ Ⅱ ） complex, [ Zn （ H4FoPyS）2 （ H2O）4 ] （ NO3 ）2 · 3 （ H2O） （ 1 ） （ H4FoPy S = pyridine-4-aldehyde semicarbazone） , was synthesized by hydrothermal method. The structure of 1 was characterized by IR, elemental analysis, single crystal X-ray diffraction and thermal analysis. The crystal of 1 belongs to triclinic with space group PI. The unit cell parameters are as follows： a = 9.6505（16）A°, b =12.644（2） A°, c =13. 156（2）A°, α=115.459（3）°,β=90.0290（10）°, γ = 111.792（3）, V=1321.1（4） A°^3, Dc =1.609 g · cm^-3, Z=2, Mr=647.84,μ=1.905 mm^-1 and F（000） =728, R1 =0. 0365 and wR2 =0. 0878. The zinc（ Ⅱ ） center adopts a slightly distorted octahedral geometry comprised of two pyridine nitrogen atoms and two aqua oxygen atoms at the equatorial positions, and two aqua oxygen atoms at the axial positions.