PH-Dependent Syntheses, Crystal Structures and Properties of Three Low-Dimensional Iodoargentate Hybrids

Abstract

By simply changing pH value of reaction solution, three low-dimensional iodoargentate hybrids, [HDABCO]2[(DABCO)2(Ag2I4)] (1), [HDABCO]0.5[(HDABCO)0.5(AgI2)] (2) and [(Me2NH2)(H2DABCO)][AgI4] (3) (DABCO = 1,4-diazabicyclo-[2.2.2]octane), have been synthesized. Noteworthy, variation in protonated degree and aggregating forms of DABCO at different pH value, the structure of inorganic moieties vary regularly from 0D [(DABCO)2(Ag2I4)]2− anion for 1 to 1D [(HDABCO)0.5(AgI2)]0.5− chain for 2 and 0D [AgI4]3− anion for 3, exhibiting unique structural directing effects. In addition, three compounds display structure-dependent semiconductor natures and thermal stabilities.