三价砷阴离子AsS43-化合物InAsS4(2,2'-bipy)2的合成及性质

摘要

用水热法合成了含三价砷阴离子 AsS43-的化合物[InAsS4(2,2'-bipy)]2.该化合物晶体为单斜晶系,空间群为 P21/c,晶胞参数 a=0.89799(9)nm,b=2.1794(2)nm,c=1.43736(14)nm,β=91.274(2)°,V=2.8123(5)nm3.在此化合物中用金属螫合物[In(2,2'-bipy)]3+稳定了不常见的三价砷阴离子 AsS43-,讨论了金属价态对最终产物结构的影响,并且研究了该化合物的半导体性质(禁带带宽 1.35 ev).%Compound [In AsS4( 2,2' -bipy) ]2, which contains AsS34- (As ( Ⅲ )) unit, was synthesized by the hydrothermal method. The compound crystalizes in monoclinic space group P21/c with a =0. 89799(9) nm, 6=2.1794(2) nm, c = 1.43736(14) nm, β =91. 274(2)°,V = 2.8123(5) nm3. In this compound, the AsS34- (As( Ⅲ )) unitis stabilized by metal-amino complex [In(2,2'-bipy) )3 + . The effect of metal charge on the formation of this product was discussed and the band gap of the as-synthesized semiconductor is found to be 1.35 eV.