通过三碘化锑和三碘化铋与硫脲间的室温固固反应合成了三碘化锑、三碘化铋的硫脲配合物 ,其组成为 :M[CS( NH2 ) 2 ]3 I3 ( M=Sb,Bi)。两种配合物的晶体结构均属于单斜晶系 ,锑配合物 Sb[CS( NH2 ) 2 ]3 I3 的晶胞参数为 :a=1 .4 772 nm,b=1 .6 5 82 nm,c=2 .0 6 74 nm,β=90 .81°,铋配合物 Bi[CS( NH2 ) 2 ]3 I3 的晶胞参数为 :a=1 .4 0 1 0 nm,b=2 .0 1 6 8nm,c=2 .0 397nm,β=90 .84°。远红外光谱表明硫脲中的 N原子而非硫原子参与了配位 The thiourea complex of antimony triiodide and bismuth triiodide was synthesized by the solid-state reaction of antimony triiodide and bismuth triiodide with thiourea at room temperature. The composition was M [CS (NH2) 2] 3 I3 (M = Sb, Bi). The crystal structures of the two complexes belong to the monoclinic system. The unit cell parameters of Sb [CS (NH2) 2] 3 I3 are: a = 1.4772 nm, b = 1.5682 nm, The lattice parameters of the bismuth complex Bi [CS (NH2) 2] 3 I3 are as follows: a = 1.4010 nm, b = 2.0 1 68 nm, c = 2.0907 nm, β = 90.84 °. Far-infrared spectroscopy indicates that N atoms in thiourea are involved in coordination rather than sulfur atoms