Enbo Wang

A novel organic-inorganic hybrid material with fluorescent emission: [Cd(PT)(H2O)]n(PT = phthalate)

The novel organic-inorganic hybrid material [Cd(PT)(H2O)]n (1; PT = phthalate) has been hydrothermally synthesized. The X-ray diffraction study reveals that 1 exhibits an interesting two-dimensional (2D) honeycomb framework constructed from [CdO7] single helical chains linked via oxygen atoms of the PT ligands, which adopt the μ6-bridging coordination mode. A study of the physical properties of 1 demonstrates that it exhibits a strong fluorescent emission in the solid state at room temperature.

A novel chiral coordination polymer with a two-dimensional undulated (6,4)-network: [Co4(2,2′-bipy)4(H2O)2(btec)2]n(btec = 1,2,4,5-benzenetetracarboxylate)

The novel coordination polymer [Co4(2,2′-bipy)4(H2O)2(btec)2]n (btec = 1,2,4,5-benzenetetracarboxylate), 1, has been hydrothermally synthesized. X-Ray diffraction experiments reveal that 1 exhibits an interesting two-dimensional (2D) chiral undulated (6,4)-network, which represents the first example of a 2D chiral coordination polymer containing two kinds of organic ligands. The value of the Flack parameter, x = 0.52(2), shows that the crystal of 1 is an inversion twin containing approximately 50% of the right-handed and 50% of the left-handed crystal structure and the whole compound is a racemate. Variable temperature magnetic susceptibility indicates that antiferromagnetic interactions exist between metallic Co(II) centers in 1.

A two-dimensional molybdenum (V) phosphate with covalently bonded transition metal coordination complexes: hydrothermal synthesis and structure characterization of Na2[{Mn(phen)2(H2O)}{Mn(phen)2}3{Mn Mo12vO24 (HPO4)6(PO4)2(OH)6}]·4H2O (phen=1, 10-phenanthroline)

An organic-inorganic hybrid molybdenum phosphate, Na-2[{Mn(phen)(2)(H2O)} {Mn(phen)(2)}(3){(MnMo12O24)-O-v (HPO4)(6)(PO4)(2) (OH)(6)}] . 4H(2)O (phen=1,10-phenanthroline), involving molybdenum present in V oxidation state and covalently bonded transition metal coordination complexes, has been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction. Deep brown-red crystals are formed in the triclinic system, space group P (1) over bar, a=16.581(l)Angstrom, b=18.354(1)Angstrom, c=24.485(2)Angstrom, alpha=80.589(l)degrees, beta=71.279(1)degrees, gamma=67.084(1)degrees, V=6493.8(8)Angstrom(3), Z=2, lambda(MoKalpha)=0.71073Angstrom (R(F)=0.0686 for 29,053 reflections). Data were collected on a Bruker Smart Apex CCD diffractometer at 293 K in the range of 1.76 < theta < 28.06degrees using omega-2theta scans technique. The structure of the title compound may be considered to be based on {Mo6O12(HPO4)(3)(PO4)(OH)(3)} units bonded together with {Mn(phen)(2)} subunits into a two-dimensional network. Two types of tunnels are observed in the solid of the title compound.

Hydrothermal synthesis and crystal structure of a layered vanadium phosphate with a directly coordinated organonitrogen ligand: [V4O7(HPO4)2(2,2′-bipy)2]

A layered vanadium phosphate [V4O7(HPO4)2(2,2′-bipy)2] was synthesized and characterized (elemental analysis, IR and thermal analysis) by the hydrothermal reaction of NaVO3·2H2O, ZnO, H3PO4, 2,2′-bipy and water. The compound [V4O7(HPO4)2(2,2′-bipy)2] exhibits a unique 4,6,8-net structure with organonitrogen donors of 2,2′-bipy ligands coordinated directly to the vanadium phosphate framework.

Hydrothermal synthesis, structure, and characterization of two one-dimensional chainlike hybrid complexes [(CuX)2(o-phen)]∞ (X = Br, Cl; o-phen = o-phenanthroline)

Two novel organic-inorganic hybrid complexes [(CuX)(2)(o-phen)](infinity) (X = Br (1), Cl (2); o-phen = o-phenanthroline) have been synthesized hydrothermally and characterized structurally by elemental analyses, IR, ESR, XPS spectrum, TG analyses and single-crystal X-ray diffraction. Both title compounds exhibit novel one-dimensional chainlike copper halide scaffolding constructed by the unusual [Cu3X3] hexagon motifs by sharing opposite edges, where a single Cu site of each [Cu3X3] hexagon is chelated with N donors of o-phen group. To our knowledge, such basic o-phen-copper halide skeleton has not been reported hitherto. Moreover, TG analyses indicate that both title compounds possess high thermal stability.

Hydrothermal synthesis and crystal structure of a hybrid material based on [Co4(phen)8(H2O)2(HPO3)2]4+ and a highly reduced polyoxoanion

An unusual composite hybrid material [Co4(phen)8(H2O)2(HPO3)2](H3O)3[PMoVI8VIV4O40(VIVO)2] 1 (phen = 1,10-phenanthroline) has been hydrothermally synthesized from a mixture of NH4VO3, Na2MoO4·2H2O, CoCl2·6H2O, phen, H3PO3 and water. It was characterized by elemental analysis, IR, UV-vis, XPS, EPR, TG and single crystal X-ray diffraction. The title compound is constructed from the organic–inorganic hybrid [Co4(phen)8(H2O)2(HPO3)2]4+ and highly reduced bi-capped pseudo-Keggin [PMoVI8VIV4O40(VIVO)2]7− polyoxoanions The structure exhibits an extended 2D network through hydrogen bonds among cations, anions and H2O, combining polyoxometalates with metal phosphonates for the first time.

A novel two-dimensional organic-inorganic hybrid compound with a (4,6)-lattice-type network: {[ Co ( H 2 O ) 2 ][ Co 2 ( phen ) 2 ( btc ) 2 ]} n (btc=benzene-1,2,4-tricarboxylate)

Abstract A new organic–inorganic hybrid compound {[Co(H2O)2][Co2(phen)2(btc)2]}n 1 has been hydrothermally synthesized and characterized by elemental analyses, IR spectrum, TG analysis and single-crystal X-ray diffraction. Compound 1 crystallizes in the triclinic system, space group P 1 , a=7.7709(16) A, b=10.572(2) A, c=12.178(2) A, α=88.49(3)°, β=77.97(3)°, γ=69.84(3)°, V=917.5(3) A3, Z=1, R1=0.0571. The compound 1 exhibits a novel two-dimensional network with unusual (4,6)-lattice-type network constructed by [Co2(phen)2(btc)2]2− dimers and the [Co(H2O)2]2+ fragments.

A new α-Keggin type polyoxometalate coordinated to four silver complex moieties: {PW9V3O40[Ag(2,2′-bipy)]2[Ag2(2,2′-bipy)3]2}

A new polyoxometalate derivative {PW9V3O40[Ag(2,2′-bipy)]2[Ag2(2,2′-bipy)3]2} 1 has been hydrothermally synthesized and structurally characterized by the single crystal X-ray diffraction. X-Ray analysis showed that both [Ag(2,2′-bipy)]+ and [Ag2(2,2′-bipy)3]2+ units are supported on the α-Keggin polyoxoanion [PW9V3O40]6−via the surface bridging oxygen atoms. 1 represents the first α-Keggin type polyoxoanion coordinated with four transition metal complex moieties, which further acts as a neutral molecular units for the construction of an interesting three-dimensional supramolecular framework.

A novel 2D arsenic vanadate network grafted with a transition metal complex: [Cu(phen)]2[VIVV4VAs2O19]·0.5H2O

A novel organic–inorganic hybrid compound [Cu(phen)]2[VIVV4VAs2VO19]·0.5H2O 1 has been hydrothermally synthesized. Its structure, determined by single crystal X-ray diffraction, exhibits an unusual two-dimensional arsenic vanadate layered network grafted with the [Cu(phen)]2+ complex. The chelating phen ligands project perpendicularly beyond the inorganic layer. Variable temperature magnetic susceptibility studies indicate that both ferro- and antiferro-magnetic interactions exist in 1.