在乙二胺溶剂体系中,180 ℃条件下合成了两种化合物[Mn (en)3]2[Sn2Se4S2](1)和[Co(en)3]2[Sn2Se4S2](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=1.549t(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 eV和1.64 eV,均有半导体性能.
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