title: Water sandwiched by a pair of aromatic rings in a proton-conducting metal-organic framework.
abstract: The interactions between water molecules and aromatic rings are known to be common and important in physics, chemistry and life sciences. Benzene-water complexes are the main prototype systems for O-Hπ and lone-pair (lp)π interactions in theoretical research, however solid state examples are very rare. Here, the solid state example of water sandwiched by a pair of aromatic rings is observed in a silver-mellitate framework, where lpπ and O-Hπ interactions coexist. The coexistence of these two interactions has been further verified by theoretical calculations. In addition, ammonium ions and water molecules as proton sources, and strongly H-bonded nets as the pathway of proton transport, make the reported MOFs (metal-organic frameworks) exhibit distinct proton conduction.
authors: College of Chemistry and Molecular Engineering, Zhengzhou University, Science Road No. 100, Zhengzhou 450001, China. zhuyan@zzu.edu.cn zangsqzg@zzu.edu.cn and College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China.
authors: Xi-Yan
authors: XY
authors: Dong
authors: College of Chemistry and Molecular Engineering, Zhengzhou University, Science Road No. 100, Zhengzhou 450001, China. zhuyan@zzu.edu.cn zangsqzg@zzu.edu.cn.
authors: Xue
authors: X
authors: Li
authors: College of Chemistry and Molecular Engineering, Zhengzhou University, Science Road No. 100, Zhengzhou 450001, China. zhuyan@zzu.edu.cn zangsqzg@zzu.edu.cn.
authors: Bo
authors: B
authors: Li
authors: College of Chemistry and Molecular Engineering, Zhengzhou University, Science Road No. 100, Zhengzhou 450001, China. zhuyan@zzu.edu.cn zangsqzg@zzu.edu.cn.
authors: Yan-Yan
authors: YY
authors: Zhu
authors: College of Chemistry and Molecular Engineering, Zhengzhou University, Science Road No. 100, Zhengzhou 450001, China. zhuyan@zzu.edu.cn zangsqzg@zzu.edu.cn.
authors: Shuang-Quan
authors: SQ
authors: Zang
authors: College of Chemistry and Molecular Engineering, Zhengzhou University, Science Road No. 100, Zhengzhou 450001, China. zhuyan@zzu.edu.cn zangsqzg@zzu.edu.cn.
authors: Ming-Sheng
authors: MS
authors: Tang