title: 2D sheet-like architectures constructed from main-group metal ions, 4,4'-bpno and 1,2-alternate p-sulfonatothiacalix[4]arene.
abstract: Two novel 2D sheet-like complexes 1 and 2 have been prepared by reaction of p-sulfonatothiacalix[4]arene (TC4AS) with main-group metal ions (lead(II) or barium(II)) and 4,4'-bipyridine-N,N'-dioxide (4,4'-bpno). In both complexes 1 and 2, TC4AS molecules prefer 1,2-alternate conformation, forming 2D sheet-like layers in the presence of divalent ions and 4,4'-bpno ligand. The layers extend to 3D architectures via strong hydrogen bonding interactions. In addition, complexes 1 and 2 are thermally stable up to ca. 335 and 305 °C, respectively. It seems that the strong hydrogen bonds between the sheet-like layers impart the extraordinarily high degrees of stability to the structures. Further analysis indicates that complexes 1 and 2 are significantly different: (a) the divalent ions have different coordination environments due to the nature of the different ions; (b) TC4AS within complexes 1 and 2 connects to four Pb(II) or six Ba(II) ions, respectively; (c) 4,4'-bpno shows different connection modes; (d) in the solid state, complex 1 exhibits intense orange luminescence with triexponential decays, while complex 2 does not exhibit any obvious luminescence at cryogenic temperatures.
authors: State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China.
authors: Kecai
authors: K
authors: Xiong
authors: Feilong
authors: F
authors: Jiang
authors: Ming
authors: M
authors: Yang
authors: Mingyan
authors: M
authors: Wu
authors: Rui
authors: R
authors: Feng
authors: Wentao
authors: W
authors: Xu
authors: Maochun
authors: M
authors: Hong
mesh_terms: D015082:2,2'-Dipyridyl / Q000031:analogs & derivatives* / Q000737:chemistry; D001464:Barium / Q000737:chemistry*; D056831:Coordination Complexes / Q000138:chemical synthesis* / Q000737:chemistry; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D007854:Lead / Q000737:chemistry*; D008024:Ligands; D049408:Luminescent Agents / Q000138:chemical synthesis* / Q000737:chemistry; D008163:Luminescent Measurements; D008958:Models, Molecular; D008968:Molecular Conformation; D010777:Photochemistry; D012995:Solubility
chemical_list: C496361:2,2'-bipyridine-N, N'-dioxide; D056831:Coordination Complexes; D008024:Ligands; D049408:Luminescent Agents; D001464:Barium; D007854:Lead; D015082:2,2'-Dipyridyl