Chao-Hai Wang

Crystal structures and photocatalytic properties of two novel iodoplumbate hybrids templated by multivalent organic cations

Two novel complexes based on multivalent organic cations and PbI2, {(tbp)2[Pb3I12]}n (1) (tbp = 1,3,5-tri(N-pyridinium methyl)benzene tribromide) and {(tbpm)[Pb3I9]·H2O}n (2) (tbpm = 1,3,5-tri(4-methylpyridiniummethyl) benzene tribromide), have been synthesized and characterized by X-ray diffractometry. Compound 1 has a trinuclear structure and compound 2 presents a new 1D iodoplumbate. Photochemical studies reveal the good photocatalytic performances of the two iodoplumbate hybrids. Furthermore, the side chains effect on the fabrication of the iodoplumbate and the photocatalytic performances was also investigated.

Four hybrid compounds based on a new type of molybdates and a flexible tripodal ligand: synthesis, structures, photochemical and electrochemical properties

The hydrothermal reaction of a mixture of (NH4)6Mo7O24·4H2O, a flexible tripodal ligand 1,3,5-tris-(imidazol-1-ylmethyl)-2,4,6-trimethylbenzene (TITMB) and metal salts at different temperatures resulted in four novel compounds, namely [H2TITMB]2[Mo12O38]·4H2O (1), [Zn(Mo2O7)(TITMB)] (2), [H3TITMB]2[Cd(β-Mo8O26)(H2O)2(α-Mo8O26)]·4H2O (3) and [H3TITMB]2[Co(β-Mo8O26)(H2O)2(α-Mo8O26)]·4.5H2O (4). The structures of compounds 1, 2, 3 and 4 were explored with IR spectroscopy, thermal gravimetric analysis (TGA), PXRD, UV-vis diffuse reflectance spectra and single-crystal X-ray diffraction in the solid state. In 1 the new type of isopolymolybdate unit [Mo12O38]4− shared ten distorted {MoO6} octahedra and two distorted {MoO5} tetragonal pyramid with four kinds of O atoms. And the unprecedented bimetallic oxide chain [Zn(Mo2O7)]n in compound 2 consisted of trigonal bipyramids and octahedra through sharing edges. Both compounds 3 and 4 are 3-D octamolybdate-based inorganic–organic hybrids consisting of the polyacid [α-Mo8O26]4− anions and novel infinite chains of [β-Mo8O26]4− anions covalently linked through [Cd(H2O)2]2+ groups or [Co(H2O)2]2+ groups. In addition, the electrochemical behavior and photocatalytic activities of the title compounds were also investigated.

Three silver (I) supramolecular compounds constructed from pyridinium or methylimidazolium polycations: Synthesis, crystal structure and properties

AbstractThree metal halide cluster supramolecular polymers, {(TBP)[Ag3Br6]}n (1), {(TBI)[Ag3Br6]}n (2) and {(TBP)[Ag3I6]}n(3) (TBP =1, 3, 5-tris(N-pyridinium methyl)benzene, TBI =1, 3, 5-tris(methylimidazole methyl)benzene), have been synthesized and characterized by thermoanalysis and spectroscopic methods, as well as single-crystal X-ray diffraction. Complexes 1, 2 and 3 all feature a one-dimensional chain structure, which is further extended by electrostatic attraction. The TGA, UV-Vis diffuse reflectance spectra in the solid state and optical band gap properties of the three complexes were also investigated. Graphical AbstractWe report three novel extended supramolecular compounds based on AgBr、 AgI and trivalent cations. All these three complexes feature a 1D chain structure. Furthermore, the TGA, UV-Vis diffuse reflectance spectra in the solid state and optical band gap properties of the three complexes were also investigated.

Synthesis, structures and properties of two novel supramolecular polymers of Cu(I) with 1,1′-Bis(isoquinoline)-1,4-Phenyldimethylenyl

Two new complexes {(BIQPM)2[Cu4I8]·DMF}n (1) and {(BIQPM)[Cu2(SCN)4]}n (2) [BIQPM = 1,1′Bis(isoquinoline)-1,4-Phenyldimethylenyl] have been synthesized via the self-assembly reaction in solution. Single-crystal X-ray diffraction analysis shows compound 1 is a tetranuclear oligomer and 2 is a 1D chain. Compound 1 crystallizes in the monoclinic system with space group C2/m; Compound 2 crystallizes in the triclinic system with space group P-1. It is the H-bonds and electrostatic interactions between the organic counteractions and inorganic moieties that do the contribution to the crystal packing. These compounds have been further characterized by IR spectroscopy and thermostability.

Syntheses and characterization of two novel 1D Pb(II) Halide supramolecular polymers possessing incomplete Cubane subunit directed by π -conjugated Dication templates

AbstractTwo novel cation-templated complexes, {(1, 4-PMBP)[Pb4I10] ⋅DMF}n(1) {(DBBP)2[Pb5I8Br6]}n(2), (1,4-PMBP ⋅2Br =1,1”-[1,4-phenylene-bis(methylene)]bis-4,4’-bipyridinium dibromide; DBBP ⋅2Br = N, N’-dibenzyl- 4, 4’-bipyridinium dibromide) have been synthesized via the self-assembly reaction in solution. X-ray crystallography showed that compounds 1 and 2 can be regarded as 1D iodoplumbate examples which contain incomplete cubane subunit directed by π-conjugated dication templates. It is the H-bonds and electrostatic interactions between the organic counter cations and inorganic moieties that contribute the crystal packing. These compounds have been further characterized by IR spectroscopy, UV-Vis spectra, elemental analysis and thermostability properties. Graphical AbstractWe report two novel 1D iodoplumbate supramolecular polymers which contain incomplete cubane subunit based on л-conjugated dication templates. These compounds have been further characterized by IR, UV–Vis spectra, elemental analysis and thermostability tests.

A new Mo/S/Cu polymeric cluster: Synthesis, structure and properties

Compound {(MoOS3Cu3Br(-bpy)2.5)·0.75DMF}∞ is an isomorphous neutral 3D 4-fold interpenetrating architecture displaying self-interpenetrating feature.sometimes, the compound like the art. All of it have been characterized by single-crystal X-ray diffraction, elemental analysis, IR, TGA, and UV-vis. The results may provide fascinating insights into template effect on the construction of the cluster-based coordination polymers.