一个新的双核锌配合物Zn_2(dhaash)_2(py)_4的合成及晶体结构  

Synthesis and Crystal Structure of Binuclear Zinc Complex Zn_2(dhaash)_2(py)_4

作　　者：胡宗球[1] 丁瑜[2] 加兵 施少敏[1] 程翠霞[1] 曹敏纳[1] 

机构地区：[1]华中师范大学化学学院,武汉430079 [2]湖北孝感学院化学系,孝感432000

出　　处：《无机化学学报》2006年第5期925-929,共5页Chinese Journal of Inorganic Chemistry

基　　金：湖北省教育厅资助项目(No.20040131)

摘　　要：The crystal of binuclear zinc complex Zn2(dhaash)2(py)4 was obtained in DMF and pyridine, where H2dhaash is 2,4-dihydroxy-5-acetylacetophenone-N-salicylhydrazone. It has been characterized by IR, UV, element analysis and X-ray single crystal diffraction. The crystallographic data were as follows: monoclinic system, space group P21 / c, a=1.108 98(11) nm, b=1.640 84(16) nm, c=1.445 14(14) nm, β=108.617(2)°, Z=2, V=2.492 1(4) nm3, Dc=1.466 g·cm-3, Mr=1 099.74, μ=1.031 mm-1, F(000)=1 136 and the final R=0.044 8 and wR=0.105 8 for 4 143 observed reflections with I≥2σ(I), respectively. The X-ray crystal structure analysis revealed that, in the centrosymmetric binuclear complex molecule, two zinc髤 centers are linked by two oxygen atoms (O(3) and O(3A)), respectively. Zn(1)...Zn(1A) distance is 0.314 81(6) nm, O(3)...O(3A) distance is 0.270 4(2) nm. Every zinc髤 ion has an elongated octahedral coordination. For example, the two pyridine nitrogen atoms, one oxygen atom and one nitrogen atom from salicylhydrazone, one oxygen atom from 2,4-dihydroxy-5-acetylacetophenone in one dhaash2- ligand and one oxygen atom from 2,4-dihydroxy-5-acetylacetophenone in another dhaash2- ligand coordinated to zinc髤 ion, respectively. Two zinc髤 ions and all the 72 non-hydrogen atoms in the two dhaash2- ligands are in the same plane. CCDC: 261929.The crystal of binuclear zinc complex Zn2（dhaash）2（py）4 was obtained in DMF and pyridine, where H2dhaash is 2,4-dihydroxy-5-acetylacetophenone-N-salicylhydrazone. It has been characterized by IR, UV, element analysis and X-ray single crystal diffraction. The crystallographic data were as follows： monoclinic system, space group P21/c, a=1.10898（11） nm, b=1.640 84（16） nm, c=1.445 14（14） nm, β=108.617（2）°, Z=2, V=2.492 1（4） nm^3, Dc=1.466 g·cm^-3, Mr=1 099.74,μ=1.031 mm^-1, F（000）=1 136 and the final R=0.044 8 and wR=0.105 8 for 4 143 observed reflections with I≥2σ（I）, respectively. The X-ray crystal structure analysis revealed that, in the centrosymmetric binuclear complex molecule, two zinc（n） centers are linked by two oxygen atoms （O（3） and O（3A））, respectively. Zn（1）...Zn（1A） distance is 0.314 81（6） nm, O（3）…O（3A） distance is 0.2704（2） rim. Every zinc（Ⅱ） ion has an elongated octahedral coordination. For example, the two pyridine nitrogen atoms, one oxygen atom and one nitrogen atom from salicylhydrazone, one oxygen atom from 2,4-dihydroxy-5-acetylacetophenone in one dhaash^2- ligand and one oxygen atom from 2,4-dihydroxy-5-acetylacetophenone in another dhaash^2- ligand coordinated to zinc（H） ion, respectively. Two zinc（n） ions and all the 72 non-hydrogen atoms in the two dhaash^2- ligands are in the same plane. CCDC： 261929.

关 键 词：2 4-二羟基-5-乙酰苯乙酮缩水杨酰肼 Zn2(dhaash)2(py)4 晶体结构 

分 类 号：O614.241[理学—无机化学]