Bangbo Yan

Hydrothermal syntheses and crystal structures of novel one- and two-dimensional organic–inorganic hybrid materials composed of paradodecatungstate-B clusters and [Cu(en)2]2+ complex groups

Novel one- and two-dimensional solids consisting of paradodecatungstate-B units linked via [Cu(en)2] 2þ and/or [Cu(H2O)2] 2þ bridging groups have been synthesized by the hydrothermal method and structurally characterized by X-ray crystallography, IR and chemical analysis. 2003 Elsevier B.V. All rights reserved.

Hydrothermal synthesis and crystal structure of a novel one-dimensional tritungstate: (C2H10N2)[W3O10]

Abstract Ethylenediammonium tritungstate, (C2H10N2)[W3O10], has been hydrothermally synthesized and structurally characterized. The structure of title compound consists of infinite chains running parallel to the b axis, that are made up of distorted WO6 octahedra linked through shared corners and edges. The ethylenediammonium ions occupy interstrand region providing space-filling and charge-compensation to anionic tritungstate matrix.

Hydrothermal synthesis and crystal structures of two novel hybrid open-frameworks and a two-dimensional network based on tungsten(VI) oxides

Three new tungsten(VI) oxide hybrid materials, [WO3(pyz)0.5] (pyz=pyrazine) 1, [WO3(bpy)0.5] (bpy = 4,4′-bipyridyl) 2 and [W3O10(enH2)] 3, have been hydrothermally synthesized: 1 and 2 exhibit covalent/coordination hybrid framework connectivities while the structure of 3 consists of novel layers comprised of distorted {WO6} octahedra linked through edge- and corner-sharing interactions.

Octahedral metal clusters as building units in a neutral layered honeycomb network, [Zn(en)]2[Nb6Cl12(CN)6]

A polymeric hybrid cluster-based compound with a double-layered honeycomb framework built of octahedral niobium cyanochloride clusters and [Zn(en)]2+ metal complexes was designed and synthesized at room temperature, and structurally characterized by single crystal X-ray diffraction.

Crystal structures of chloro[4-bromo-2-(dimethylamino-2-ethyl)aminomethylphenolato]diphenyltin(IV) and dichloro[4-bromo-2-(2'-dimethylaminoethyl)-iminomethylenephenolato]phenyltin(IV)

Figure 1. ORTEP plot of [(CHjkNCIIjCHjNHCHj]2-Br-4-C6H3OSn(C6H,)2Cl at the 50% probability level. Hydrogen atoms are drawn as spheres of arbitrary radii. Selected bond distances and angles: Snl-Cli 2.517(2), Snl-Cl 2.158(4). Snl-C7 2.182(4). Snl-Nl 2.274(6). Snl-N2 2.465(7). Snl-Ol 2.048(5) A; CI Snl € 7 106.0(2).Cl-Sn) N1 160.9(2). Cl-Snl-N2 87.7(2). Cl -Snl -Ol 93.4(2). Cl-Snl-Cl l 97.5(1), C7-Snl-Nl 92.9(2). C7-Snl-N2 166.3(2). C7-Snl-01 93.6(2). C7-Snl-Cll 94.5(1). Nl-Snl-N2 73.4(2), N l -Sn l -Ol 82.6(2). Nl-Snl-Cl l 83.3(1). N2-Snl-01 85.3(2). N2-Snl-Cll 83.6(2). Ol Snl-Cll 164.1(2)°. Figure 2. ORTEP plot of [(CH3)2NCH2CH2N=CH|-2Rr-4-C6H3OSn(C6H,)CI2 at the 50% probability level. Hydrogen atoms are drawn as spheres of arbitraryradii. Selected bond distances and angles: Snl CI 2.139(5). Snl N1 2.185(9), Snl-N2 2.32(1). Snl-Ol 2.041(9). Snl-Cll 2.483(3). Snl-C12 2.453(4) A; C l -Sn l -Nl 175.6(3). Cl -Snl -N2 98.3(3). CI-Snl -Ol 98.4(3). Cl -Snl -Cl l 95.8(2). Cl-Snl-C12 95.8(2). Nl -Sn l -N2 77.4(4). Ν1-Snl-Ol 86.0(4). Nl -Snl -Cl l 84.9(3). N1 Snl C12 83.6(3), N2-Snl -01 163.3(4), N2-Snl-Cl 1 90.1(3). N2-Snl-C12 89.0(3). Ol-Snl-CI 1 88.0(3). 01-Snl-CI2 89.6(3). CI 1-Snl -CI2 168.4(1)°

A METHANOL-SOLVATE ADDUCT OF CHLOROTRIPHENYLTIN(IV) WITH 4-BROMO-2-[(DIMETHYLAMINOETHYL)AMINOMETHYL]PHENOL

Figure 1. ORT Ε Ρ plot of (C6H5)3SnCIO-C6H3Br-2-CH2NH2CH2CH2N(CH3)2 C H 3 O H at t he 5 0 % probability level. Hydrogen atoms are drawn as spheres of arbitrary radii. Selected bond distances and angles: S n l C l =2 .122(4 ) , S n l C 7 = 2.139(5), S n l C I 3 = 2.130(5), S n l O l =2 .176(3 ) , S n l C l l = 2.586(2) Ä; C l S n l C 7 = 116.1(2), C l S n l C 1 3 = 129.6(2), C l S n l O l = 85.8(2), C l S n l C I l = 86.4(1), C 7 S n l C13 = 114.4(2), C 7 S n l 0 1 = 94.2(2), C 7 S n l C l l = 94.5(1), C 1 3 S n l 0 1 = 90.6(2), C 1 3 S n l C l l = 90.0(1), O l S n l C l l = 170.2(1)°.

Hydrogen-bonded sodium–organic frameworks from imidazole-4,5-dicarboxylic acid

Coordination polymers [Na(Hidc)(H2idc)(H2O)2] (1) and [Na(Hidc)(H2O)] (2) (H2idc = imidazole-4,5-dicarboxylic acid) have been synthesized hydrothermally and analyzed by single-crystal X-ray diffraction analysis, TGA, and IR. Compound 1 displays a 1-D coordination network and 2 exhibits a layered coordination structure. Both compounds form 3-D frameworks through hydrogen bonds.

Hydrothermal synthesis, structures and catalytic properties of the new open-framework cobalt tungsten phosphates (enH2)3[Co3W4P4O28] and K6[Co3W4P4O28]·4H2O

Two new 3D open-framework cobalt tungsten phosphates, (enH2)3[Co3W4P4O28] and K6[Co3W4P4O28]·4H2O, have been hydrothermally synthesised and characterized by single-crystal X-ray diffraction, thermogravimetry, elemental analysis and IR spectroscopy. Their anionic frameworks, built up from corner sharing CoO4 and PO4 tetrahedra, and CoO6 and WO6 octahedra, delimit 3D channels that consist of 7- and 8-rings. The channels in both compounds are occupied by the charge-balancing [enH2]2+ or K+. In situ powder XRD study showed that the framework of (enH2)3[Co3W4P4O28] was stable up to 500 °C at which temperature the organic templates had been removed.

2-D metalloporphyrin coordination network of cobalt-meso-tetra(4-carboxyphenyl)porphyrin

A new metalloporphyrin coordination framework [Co(H3TCPP)] (H6TCPP = meso-tetra(4-carboxyphenyl)porphyrin) has been synthesized hydrothermally. Single-crystal X-ray analysis revealed it exhibits a 2-D layered coordination network structure. Hydrogen bonds are observed between carboxyl groups within the 2-D layer as well as from adjacent layers. The UV–Vis diffuse reflectance spectrum indicates the presence of the expected B (410 nm) and Q (540 and 690 nm) absorption bands. The fluorescence spectrum shows four emission bands centered at 648 nm. Graphical abstract