锡硫属化物[M(en)_3]_2[Sn_2Se_4S_2](M=Mn,Co)的溶剂热合成,晶体结构与性质表征

Solvothermal Synthesis,Crystal Structures and Performance Characterization of Tin Chalcogenides [M(en)_3]_2[Sn_2Se_4S_2](M=Mn,Co)

在乙二胺溶剂体系中,180℃条件下合成了两种化合物[M(en)_3]_2[Sn_2Se_4S_2](1)和[Co(en)3]2[Sn_2Se_4S_2](2)。通过X-射线单晶衍射、SEM、IR、TGA和UV-Vis等手段对其进行了表征。X-射线单晶衍射结果表明化合物1和2是类质同晶,均为正交晶系,并属于Pbca空间群,结构中均含有Sn和两种硫属元素S、Se组成的二聚体阴离子[Sn2Se4S2]2-。两种晶体的晶胞参数分别为:化合物1,a=1.6020(8)nm,b=1.1842(6)nm,c=1.9658(10)nm,Z=8;化合物2,a=1.5491(5)nm,b=1.1688(4)nm,c=1.18666(6)nm,Z=8。紫外-可见漫反射光谱研究结果表明,化合物1和2的禁带宽度分别为1.54 e V和1.64 e V,均有半导体性能。

Using ethylenediamine as solvent,under 180 ℃ temperature condition,two kinds of compound of [M（en）_3]_2[Sn_2Se_4S_2]（1） and [Co（en）_3]_2[Sn_2Se_4S_2]（2） were synthesized,and characterized by single-crystal X-ray diffraction,SEM,IR,TGA and UV-Vis reflectance.Single crystal X-ray diffraction results show that compounds 1 and 2 are isostructural compounds and both of them are orthorhombic,belongs to Pbca space group,and containing dimer anion,which contains S,Se two kinds of chalcogen elements.The crystal lattice parameters of two kinds of compounds are as follows：compound1,a = 1.6020（8） nm,b = 1.1842（6） nm,c = 1.9658（6） nm,Z = 8;compound 2,a = 1.5491（5）nm,b = 1.1688（4） nm,c = 1.18666（6） nm,Z = 8.UV-Vis diffuse reflectance spectra showed that band gap of the compounds 1 and 2 are 1.54 e V and 1.64 e V,respectively,and two compounds also have semiconductor properties.