Structures,Properties and Theoretical Studies on Two Viologen/Iodoargentate Supramolecular Hybrids

【摘要】 Two iodoargentate hybrids templated by viologen or viologen-like cations, i.e. [MV（Ag₂I₄）]n（1） and [MBYP（AgI 2）]n（2）,(MV²⁺ = methyl viologen, MBYP+ = 1-methyl-2,2?-bipyridine) have been synthesized in polar organic solvents.（Ag₂I₄）2-n and（Ag I2）2- n chains in both compounds were constructed from edge-sharing of normal and distorted Ag I4 tetrahedra, and a 2-D supramolecular layer based on C–H···I hydrogen bond was observed in 1. The band gaps of 1.54 and 2.67 e V indicated their semiconductor nature. Their band gap difference was led by different hydrogen bond donors in MV²⁺ and MBYP+, which result in more diffused p-π* antibonding orbitals in MV²⁺.更多还原

【Abstract】 Two iodoargentate hybrids templated by viologen or viologen-like cations, i.e. [MV（Ag₂I₄）]n（1） and [MBYP（AgI 2）]n（2）,(MV²⁺ = methyl viologen, MBYP+ = 1-methyl-2,2?-bipyridine) have been synthesized in polar organic solvents.（Ag₂I₄）2-n and（Ag I2）2- n chains in both compounds were constructed from edge-sharing of normal and distorted Ag I4 tetrahedra, and a 2-D supramolecular layer based on C–H···I hydrogen bond was observed in 1. The band gaps of 1.54 and 2.67 e V indicated their semiconductor nature. Their band gap difference was led by different hydrogen bond donors in MV²⁺ and MBYP+, which result in more diffused p-π* antibonding orbitals in MV²⁺.更多还原