title: Syntheses, structures and properties of two unusual silver-organic coordination networks: 1D→1D tubular intertwinement and existence of an infinite winding water chain.
abstract: Two unusual metal-organic frameworks {[Ag(2)(Hbtc)(bpy)(2)]·(H(2)O)(2)}(n) (1), {[Ag(3)(btc)(bpy)(3)(H(2)O)]·(H(2)O)(7)}(n) (2) (H(3)btc = 1,2,3-benzenetricarboxylic acid, bpy = 4,4'-bipyridine) have been synthesized and characterized by single crystal X-ray diffraction. Complex 1 features an infinite 1D→1D tubular intertwinement network, while complex 2 exhibits a double ladder structure which contains rare winding water chains. Both infinite 1D→1D tubular chains in complex 1 and double ladder in 2 are mutually interconnected by hydrogen bonding and π···π stacking interactions into three-dimensional (3D) supramolecular networks. In addition, thermogravimetric analysis, powder X-ray diffraction (XRD), and photoluminescent behavior of the complexes have also been investigated.
authors.affiliation: Department of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China.
authors.forename: Bo
authors.initials: B
authors.lastname: Li
authors.forename: Shuang-Quan
authors.initials: SQ
authors.lastname: Zang
authors.forename: Can
authors.initials: C
authors.lastname: Ji
authors.forename: Chen-Xia
authors.initials: CX
authors.lastname: Du
authors.forename: Hong-Wei
authors.initials: HW
authors.lastname: Hou
authors.forename: Thomas C W
authors.initials: TC
authors.lastname: Mak