Octahedral [PbI_6] works as network modifier and they are homogeneously dispersed in the disordered network by linking with [AsS_3/2] pyramids by S-I bonds.

• 八面体构型的配位多面体[PbI_6]为网络修饰体，通过S-I键与[AsS_3/2]三角锥连接，均匀地分布于玻璃网络中。