Mn(Ⅱ)配位超分子的合成、晶体结构和光电性能  

Synthesis,crystal structure and surface photo-electric property of Mn(Ⅱ) coordination supramolecule

作　　者：牛淑云[1] 刘春林[1] 刘懿[1] 

机构地区：[1]辽宁师范大学化学化工学院,辽宁大连116029

出　　处：《辽宁师范大学学报（自然科学版）》2013年第1期62-66,共5页Journal of Liaoning Normal University:Natural Science Edition

基　　金：国家自然科学基金项目(20571037);辽宁省教育厅创新团队项目(2007T092)

摘　　要：采用水热合成方法,得到了1种Mn(Ⅱ)的配位超分子[Mn(phen)2(H2O)2].(ssal).4H2O(H2ssal=磺基水杨酸,phen=邻菲啰啉).通过单晶X射线衍射分析,可确定该配位超分子的分子结构和晶体结构.结构分析表明,该配位超分子属三斜晶系,空间群为P-1,晶胞参数a=1.007 32(14)nm,b=1.225 49(17)nm,c=1.393 87(19)nm;α=97.005(2)°,β=101.404(2)°,γ=98.866(2)°,V=1.645 8(4)nm3.在分子中,中心Mn(Ⅱ)离子是六配位,配位模型式为:MnN4O2,形成了畸变的八面体构型.分子间由氢键将其连接成具有2D结构的超分子.采用表面光电压光谱(SPS)技术,研究了该配位超分子的表面光伏性能.结果显示,该配位超分子在300～600nm范围内呈现出正的光伏响应,表明它具有一定的光电转化能力.将该配位超分子的SPS谱与它们的UV-Vis吸收光谱进行了对比分析和指认,发现两者具有密切的关联.同时对配合物的UV-Vis和IR光谱进行了分析指认.Abstract.. A Mn coordination supramolecule [Mn（phen）2（H2O）2].（ssal）.4H2O（H2ssal= 5-sulfos- alicylic acid, phen= 1,10-phenanthroline） has been synthesized by hydrothermal method. The molecu- lar structure and crystal structure of the complex was determined by single crystal X-ray diffraction. The structure analysis shows that this complex crystallizes in triclinic crystal system, P-1 space group, and the crystal cell parameters is a=1.007 32（14）nm,b=1.225 49（17）nm,c=1.393 87（19）nm;α=97.005（2）°,β=101.404（2）°,γ=98.866（2）°,V=1.645 8（4）nm3.- In the molecule,the central Mn （ Ⅱ ） ion is six-coordinate with MnN4 02 coordination mode, forming twisted octahedron geometry. The complex is linked into 2D supramolecule by hydrogen bonds. The photo-electric property was investi- gated by surface photovoltage spectroscopy（SPS）. The results indicate that the complex exhibits pos- itive surface photovoltage responses in the range of 300-600 nm,which indicates that they all pos- sess certain photo-electric conversion properties. SPS spectra of the complex was compared with UV- Vis spectra,and found that there has a good relationship between each other. In addition,the UV-Vis and IR spectra of the complex were measured and analyzed.

关 键 词：Mn(Ⅱ)配位超分子 合成 晶体结构 光电性能 

分 类 号：O614[理学—无机化学]