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Silver Iodobismuthates:  Syntheses, Structures, Properties, and Theoretical Studies of [Bi2Ag2I102-]n and [Bi4Ag2I162-]n

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posted on 19.02.2007, 00:00 by Wen-Xiang Chai, Li-Ming Wu, Jun-Qian Li, Ling Chen
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.

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