title: A series of silver(I) pyridone-sulfonates with 1-D "butterfly" chain, 2-D lamellar network and 3-D pillared layered frameworks: syntheses, structures and characterizations.
abstract: A series of silver(I) pyridone-sulfonates, namely [Ag5(HL1)3(NO3)2(H2O)]n (1) [Ag2(HL1)2]n.2nH2O (2), [Ag2(HL1)(NO3)]n (3), and [Ag3(HL2)2(NO3)(H2O)]n (4) (HL1 = 4(1H)-pyridone-3-sulfonate monoanion, HL2 = 2(1H)-pyridone-5-sulfonate monoanion), have been synthesized and characterized by elemental analyses, IR, TG, PL and X-ray analyses. Complex 1, which exhibits a novel continuous silver polyhedral framework containing four kinds of coordination spheres, has been recently reported. Complex 2 presents the first one-dimensional (1-D) "butterfly" array composed of SO3-bridged columns of Ag(I) ions and symmetric pendant organic groups in silver(I) sulfonates, while complex 3 possesses a two-dimensional (2-D) layer structure in which the inorganic network substructure consists of helical chains of edge-sharing Ag1 distorted octahedra linked through dimers of edge-sharing Ag2 distorted anti-trigonal prisms by sharing two corners and two edges. Replacing H2L1 by H2L2 leads to the formation of complex 4, a three-dimensional (3-D) pillared layered framework, which is also extended by the rare mu4 nitrate anion. In complexes 1-4, all the inorganic parts can be considered as being built up from versatile polyhedra of silver(I) centers by sharing corners, edges or faces. The sulfonic group shows some novel coordination modes, which is first reported here. Solid-state fluorescence quenching and thermal stability are discussed for all of these complexes.
authors: Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, Harbin, 150080, P. R. China.
authors: Zhao-Peng
authors: ZP
authors: Deng
authors: Zhi-Biao
authors: ZB
authors: Zhu
authors: Shan
authors: S
authors: Gao
authors: Li-Hua
authors: LH
authors: Huo
authors: Hui
authors: H
authors: Zhao
authors: Seik Weng
authors: SW
authors: Ng