title: Silver iodobismuthates: syntheses, structures, properties, and theoretical studies of [Bi2Ag2I10 2-]n and [Bi4Ag2I16 2-]n.
abstract: Two novel silver iodobismuthates have been obtained: (Et4N)2n-[Bi2Ag2I10]n (1) with one-dimensional infinite chains built from bimetallic tetranuclear units and (Et4N)2n[Bi4Ag2I16]n (2) with a two-dimensional 44 grid assembly of the tetranuclear Bi4I16 subunits as nodes and Ag atoms as linkages. Their optical band gaps, 2.05 and 1.93 eV, fit nicely in a size correlation of the Bi/I subunit, which is further supported by the density functional theory studies.
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.
authors.forename: Wen-Xiang
authors.initials: WX
authors.lastname: Chai
authors.forename: Li-Ming
authors.initials: LM
authors.lastname: Wu
authors.forename: Jun-Qian
authors.initials: JQ
authors.lastname: Li
authors.forename: Ling
authors.initials: L
authors.lastname: Chen