Ab initio study of silver sulfur binary [Ag center dot (Ag2S)(n)](+)(n=1,2) clusters

the possible geometrical structures of [ag .(ag2s)(n)](+)(n=1,2) cluster were optimized by using the methods of ab initio molecular orbital restrict hatree-fock(rhf) and density function theory(dft). the corresponding stable geometries and electronic structures were obtained. that the two clusters can act as the deep trap of free electron of sulfur sensitive center was also explained.