Wei-Qiu Kan

Huaiyin Normal University, Peping, Beijing, China

Are you Wei-Qiu Kan?

Claim your profile

Publications (44)117.63 Total impact

  • Source
    Wei-Qiu Kan · Shi-Zheng Wen · Hua-You Hu · Yu-He Kan
    [Show abstract] [Hide abstract]
    ABSTRACT: Four Cd(II)- and Cu(II)-containing coordination polymers (CPs) based on a multidentate N-donor ligand and varied dicarboxylate anions, [Cd(3,3′-tmbpt)(p-bdc)]·2.5H2O (1), [Cd(3,3′-tmbpt)(m-bdc)]·2H2O (2), [Cu(3,3′-tmbpt)(m-bdc)]·H2O (3), and [Cu(3,3′-tmbpt)(p-bdc)]·2H2O (4), where 3,3′-tmbpt = 1 − ((1H-1,2,4-triazol-1-yl)methyl)-3,5-bis(3-pyridyl)-1,2,4-triazole, p-H2bdc = 1,4-benzenedicarboxylic acid, and m-H2bdc = 1,3-benzenedicarboxylic acid, have been prepared hydrothermally. The structures of the compounds were determined by single-crystal X-ray diffraction analyses and further characterized by infrared spectra and elemental analyses. Compound 1 exhibits a 3-D twofold interpenetrating framework with a 65·8 CdSO4 topology. Compound 2 is a 2-D layer containing meso-helical chains with a 44·62 sql topology. Compound 3 shows a 1-D → 3-D interdigitated architecture while 4 displays a 2-D → 3-D interdigitated architecture. The structural differences of the compounds indicate that the dicarboxylate anions and the central metal ions play important roles in the resulting structures of CPs. Optical band gaps and solid-state photoluminescent properties have also been studied.
    Journal of Coordination Chemistry 05/2015; 68(14):1-25. DOI:10.1080/00958972.2015.1052805 · 2.22 Impact Factor
  • Shi-Zheng Wen · Wei-Qiu Kan · Hua-You Hu · Yu-He Kan
    [Show abstract] [Hide abstract]
    ABSTRACT: A novel coordination polymer, namely, [Cd7(4,4′-tmbpt)3(d-cam)6(OH)2]·8.25H2O (1), where 4,4′-tmbpt = 1-((1H-1,2,4-triazol-1-yl)methyl)-3,5-bis(4-pyridyl)-1,2,4-triazole, and d-H2cam = d-camphoric acid, has been synthesized under hydrothermal condition. Compound 1 exhibits a three-dimensional homochiral (3,8,9)-connected framework, which is a rare example of coordination polymer with homochiral highly connected structure based on the chiral source of d-H2cam. The structure of the compound was determined by single-crystal X-ray diffraction analysis and further characterized by infrared spectrum (IR), elemental analysis and UV–Vis spectrum. Moreover, the optical band gap and photoluminescent property of the compound have been investigated.
    Inorganic Chemistry Communications 02/2015; 52. DOI:10.1016/j.inoche.2014.12.007 · 2.06 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: A series of coordination polymers constructed from tripodal N-donor ligands and polycarboxylate anions, namely, [Ag6(3,4 '-tmbpt)(btc)2]center dot 2H(2)O (1), [Ag-2(3,4 '-tmbpt)(H(2)btec).H2O-120 (2), [Ag-2(4,4 '-tmbpt)(Hbtc).H2O (3), [Cd-3(4,4 '-tmbpt)(btc)(2)(H2O)6]center dot 7H(2)O (4), [Co(4,4'-tmbpt)(btec)0.5(F120)1 (5) and [Ni(4,41-tmbpt)(btec)0.5 (H2O)] (6), where 3,4 '-tmbpt = 1-((1H-1,2,4-triazol-1-yl)methyl)-3-(4-pyridy1)-5-(3-pyridy1)-1,2,4-triazole, 4,4 '-tmbpt = 1 -((1H-1,2,4-triazol-1-y1)methyl)-3,5-bis(4-pyridy1)-1,2,4-triazole, H(3)btc = 1,3,5-benzenetricarboxylic acid, and RIbtec = 1,2,4,5-benzenetetracarboxylic acid, have been hydrothermally prepared. Single crystal X-ray diffraction analyses indicate that compound 1 exhibits a 3D (3,4,6)-connected framework with (4.6(2))(2)(6.8(5))(2)(4.6(2),8(3).12) topology. Compound 2 has a 3D (3,4)-connected framework with (6(3))2(4(2).6(4))(4(2).6(3).8) topology. Compound 3 exhibits a 2D layer structure. Compound 4 shows a 3D 2-fold interpenetrating framework with (6.10(2)) topology. Compounds 5 and 6 exhibit similar 2D -> 3D polythreading architectures. These compounds have been characterized by infrared spectra (IR), elemental analyses and powder X-ray diffraction (PXRD) analyses. The effects of the organic anions on the structures of the compounds have been discussed. Moreover, the photoluminescent properties of the compounds have been investigated.
    Polyhedron 01/2015; 85:246–254. DOI:10.1016/j.poly.2014.08.020 · 2.05 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: We report a new microporous negatively charged metal–organic framework (MOF), [(C2H5)2NH2]2[Mn6(L)(OH)2(H2O)6]·4DEF (1) (H12L = 5,5′,5′′,5′′′,5′′′′,5′′′′′-[1,2,3,4,5,6-phenylhexamethoxyl]hexaisophthalic acid and DEF = N,N′-diethylformamide), and its utilization as a platform for the highly selective adsorption and separation of organic dyes through an ion-exchange process. The dynamics of selective adsorption, separation and release of a series of organic dyes demonstrated that this exchange-based separation process is highly related to the sizes or charges of organic dyes, and this relationship can be controlled by the structural characteristics of MOF 1.
    12/2014; 3(4). DOI:10.1039/C4TA05391E
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Four polyoxometalate-based semiconductive coordination polymers, namely, [Cd3(2,3′-Htmbpt)2(2,3′-tmbpt)4(γ-Mo8O26)(β-Mo8O26)(H2O)4]·5H2O (1), [Co(2,3′-Htmbpt)2(β-Mo8O26)]·4H2O (2), [Ag(2,3′-Htmbpt)2(β-Mo8O26)]·H3O·4H2O (3), and [Cu(2,3′-tmbpt)(β-Mo8O26)]·H2O (4) (2,3′-tmbpt = 1-((1H-1,2,4-triazol-1-yl)methyl)-3-(3-pyridyl)-5-(2-pyridyl)-1,2,4-triazole) have been synthesized under hydrothermal conditions. Their structures have been characterized by single-crystal X-ray diffraction analyses, infrared spectra (IR), elemental analyses and powder X-ray diffraction (PXRD) analyses. Polymer 1 has a 3D (4,6)-connected framework with (5·64·8)(4·52·62·7)(42·54·66·7·82) topology. In polymer 2, the [β-Mo8O26]4− anions connect the Co(II) ions to form a chain, which is decorated by the 2,3′-Htmbpt ligands. The chains are extended by the hydrogen bonding interactions to generate a 3D supramolecular framework. Polymer 3 displays a discrete structure, which is linked by the hydrogen bonding interactions to form a chain. The chains span in two different directions, yielding a plywood-like structure. In polymer 4, the [β-Mo8O26]4− anions connect the Cu(II) ions to furnish a layer, which is further coordinated by the 2,3′-Htmbpt ligands. The layers are linked by the hydrogen bonding interactions to form a 3D supramolecular framework. The optical band gaps of 1-4 reveal that they are potential semiconductive materials. The luminescent spectra of polymers 1 and 3 indicate that they emit blue luminescence at room temperature. The photocatalytic investigation indicates that polymers 1-3 can promote the decomposition of methylene blue solution, while polymer 4 inhibits the decomposition process.
    Synthetic Metals 12/2014; 198:51–58. DOI:10.1016/j.synthmet.2014.09.028 · 2.22 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Three coordination polymers based on multidentate N-donor ligands and polycarboxylate anions, namely, [Co-3(4,4'-tmbpt)(4)(btc)(2)].9.5H(2)O (1), [Ag-4(4,4'-tmbpt)(btec)(H2O)(2)]center dot H2O (2) and [Zn(4,4'-tmbpt)(btec)(0.5)(H2O)]center dot 0.5H(2)O (3) (4,4'-tmbpt = 1-((1H-1,2,4-triazol-1-yl)methyl)-3,5-bis(4-pyridy1)-1,2,4-triazole, H(3)btc = 1,3,5-benzenetricarboxylic acid,000 and H(4)btec = 1,2,4,5-benzenetetracarboxylic acid) have been prepared under hydrothermal condition. Compound 1 displays a 3D (3,6,8)-connected framework with (4.6(2))(4(4).6(10).8)(4(14).6(12).8(2)) topology. Compound 2 is a 3D (4,5,8)-connected framework with (4(3).6(2).8)(4(3).6(5).8(2))(4(8).6(2))(4(10).6(10).8(8)) topology. Compound 3 exhibits a 2D -> 3D polythreading architecture. The photoluminescent spectra indicate that at room temperature, compounds 2 and 3 emit green and blue luminescence, respectively.
    Inorganic Chemistry Communications 11/2014; 49:155–158. DOI:10.1016/j.inoche.2014.09.036 · 2.06 Impact Factor
  • Source
    Wei-Qiu Kan · Ji-Ming Xu · Yu-He Kan · Jiao Guo · Shi-Zheng Wen
    [Show abstract] [Hide abstract]
    ABSTRACT: Five inorganic–organic hybrid compounds have been prepared under hydrothermal conditions and characterized by single-crystal X-ray diffraction analyses, infrared spectra, elemental analyses, powder X-ray diffraction, and thermogravimetric analyses. In 1, each 2,2-tmbpt ligand links two Cu(II) ions to generate a highly undulated chain. The chains are further bridged by [SiW12O40]4‐ anions to form a layer. Compound 2 exhibits a 3-D (3,4,5)-connected framework with large channels, in which [SiW12O40]4‐ anions are tetradentate linkages. In 3, each 2,4-tmbpt links three Cu(II) ions to form 2-D layers, which are further linked by [SiW12O40]4‐ to yield a 3-D (3,4)-connected framework. In 4, each 4,4-tmbpt connects three Cu(II) ions to generate 1-D double chains. In 5, [PW12O40]3‐ link Cu(II) ions to generate 1-D chains. Compounds 1‐5 exhibit photocatalytic activities for degradation of methylene blue and rhodamine B.
    Journal of Coordination Chemistry 02/2014; 67(2). DOI:10.1080/00958972.2014.882503 · 2.22 Impact Factor
  • Peng Du · Yan Yang · Jin Yang · Ying-Ying Liu · Wei-Qiu Kan · Jian-Fang Ma
    [Show abstract] [Hide abstract]
    ABSTRACT: Eight highly connected metal-organic frameworks (MOFs) based on flexible tricarboxylate ligands, namely, Na[Zn5(L)2(μ3-OH)5] (1), (HTEA)[Zn3(L)2(μ3-OH)]·0.25H2O (2), [Zn3(L)2(BIME)(H2O)2] (3), [Cd3(L)2(BIME)(H2O)2] (4), [Pb7(L)4(μ3-OH)2(H2O)2]·8H2O (5), [Zn4(L)2(BET)(μ4-O)] (6), [Zn2(HL)2(PBIB)]·2H2O (7), and [Zn3(L)2(PBIB)2]·4H2O (8) (H3L = (3,5-dicarboxylphenyl)-(4-(2′-carboxylphenyl)benzyl) ether, TEA = triethylamine, BIME = 1,2-bis(imidazol-1-yl)ethane, BET = 1,2-bis(1,2,4-triazole-1-yl)ethane, and PBIB = 1,4-bis(imidazol-1-ylmethyl)benzene) have been synthesized under hydrothermal conditions. Compound 1 exhibits a three-dimensional (3D) (3,12)-connected framework based on decanuclear [Zn10(μ3-OH)10(COO)12] units. Compound 2 displays a 3D (3,6)-connected framework based on trinuclear [Zn3(μ3-OH)(CO2)6] units. Compounds 3 and 4 display unusual 2-fold interpenetrated 3D (3,6)-connected frameworks with the same (42·6)2(44·62·88·10) topology. Compound 5 features a 3D tetranodal (3,3,4,8)-connected framework based on pentanuclear [Pb5(COO)8(μ3-OH)2(H2O)2] units. Compound 6 exhibits an unprecedented 2D (3,8)-connected network with (3·42)(46·57·68·73·8) topology based on tetranuclear [Zn4(μ4-O)(COO)6] units. Compound 7 reveals a wavy 2D sheet with (44·62) topology. Further, each sheet is interdigitated by two others in a parallel fashion to yield an unusual 2D → 3D interdigitated framework. Compound 8 displays a 3D rare trinodal (3,4,6)-connected framework with (3·4·5)2(32·103·11)(32·42·52·103·114·12·13) topology. These compounds have been characterized by IR spectra, UV-vis spectra, TGA, and powder XRD patterns. The optical band gaps and photoluminescent behaviors of 1-8 have been investigated in detail. In addition, surface photovoltage spectroscopies of compounds 1-4 indicate that these compounds possess positive surface photovoltage (SPV) responses in the range of 300-600 nm.
    CrystEngComm 09/2013; 15(35):6986. DOI:10.1039/c3ce40828k · 3.86 Impact Factor
  • Zhe Zhang · Jian-Fang Ma · Ying-Ying Liu · Wei-Qiu Kan · Jin Yang
    [Show abstract] [Hide abstract]
    ABSTRACT: Ten new coordination polymers, [Zn2(Htrb)(L1)2]·8H2O (1), [Zn2(Htrb)(HL2)2(H2O)2]·4H2O (2), [Co2(Htrb)(HL2)2(H2O)2]·4H2O (3), [Cd2(Htrb)(HL2)2(H2O)2]·4H2O (4), [Cu3(Htrb)(L2)2(H2O)2]·8H2O (5), [Ag5(Htrb)(HL2)(L2)(H2O)2]·2H2O (6), [Ag6(Htrb)2(HL3)2(L4)]·2H3L3·6H2O (7), [Ag4(Htrb)2(H2L5)2] (8), [Ag6(Htrb)2(HL6)2(H2O)3]·2H2O (9), and [Ag2(Htrb)]·2NO3 (10), based on a hexadentate N-donor ligand hexakis(1,2,4-triazol-ylmethy1)benzene (Htrb) and different carboxylates, have been synthesized (H2L1 = 5-OH-1,3-benzenedicarboxylic acid, H3L2 = 1,3,5-benzenetricarboxylic acid, H3L3 = 1,2,4-benzenetricarboxylic acid, H2L4 = 2-CH2OH-1,4-benzenedicarboxylic acid, H4L5 = 3,3′,4,4′-benzophenone tetracarboxylate acid, and H4L6 = 4,4′-oxidiphthalic acid). Compounds 1–4 feature typical 2D binodal 4-connected networks with a (4·64·8)2(42·64) topology. Compound 5 exhibits a 3D (4,6)-connected (44·62)(44·610·8) framework. Compound 6 shows a 3D trinodal (6,8)-connected framework with a (34·44·52·65)2(34·412·54·68) topology. Compound 7 features an unusual 3D trinodal (4,6)-connected net with a (32·62·72)(3·4·5·62·8)2(32·42·52·64·72·83) topology. Compound 8 displays a 2D layer with a (3,4)-connected (4·62)2(42·62·82) topology. Compound 9 shows a uninodal 2D 4-connected network with a (44)(62) topology. Compound 10 reveals a 3D (4,8)-connected (46)2(412·612·84) net. The ligand effects on the complex structures were studied. Moreover, their luminescent emissions were studied at room temperature.
    Crystal Growth & Design 08/2013; 13(10):4338–4348. DOI:10.1021/cg400680r · 4.56 Impact Factor
  • Wei Wang · Jin Yang · Wei-Qiu Kan · Jian-Fang Ma
    [Show abstract] [Hide abstract]
    ABSTRACT: Three inorganic–organic hybrid materials based on octamolybdates, d10 metals, and multidentate N-donor ligands, namely, [Zn4(htpmb)2(θ-Mo8O26)(H2O)6.5]·0.5H2O (1), [Zn6(htpmb)2(γ-Mo8O26)2(SO4)(H2O)6]·6.5H2O (2), and [Cd2(htpmb)(γ-Mo8O26)(H2O)2]·4.5H2O (3), where htpmb = hexakis(3-(1,2,4-triazol-4-yl)phenoxy-methyl)benzene, have been synthesized under hydrothermal conditions. Compound 1 shows a 3D framework based on a rare [θ-Mo8O26]4− isomer with binodal (5,6)-connected (32·43·5·63·7)(32·44·54·62·73) topology. Compound 2 displays a 3D framework with pentanodal (4,5,6,6,7)-connected (32·4·5·62)(32·42·52·63·8)(34·42·52·64·72·8)(34·42·52·66·9)(34·43·5·68·75) topology. Compound 3 exhibits a 3D framework with pentanodal (3,4,4,6,6)-connected (3·6·7)(32·4·62·7)(34·42)(32·66·76·10)(33·4·63·74·84) topology. Their structures have been characterized by infrared spectra (IR), elemental analyses, powder X-ray diffraction (PXRD), thermogravimetric analysis, and optical band gaps. The luminescent properties and electrochemistry behaviors of compounds 1–3 have been studied. Moreover, the photocatalytic activities for methylene blue (MB) degradation of 1–3 under UV light irradiation have also been investigated in detail.
    CrystEngComm 06/2013; 15(29):-. DOI:10.1039/C3CE40626A · 3.86 Impact Factor
  • Yan Yang · Peng Du · Jin Yang · Wei-Qiu Kan · Jian-Fang Ma
    [Show abstract] [Hide abstract]
    ABSTRACT: A series of coordination polymers based on 3,5-dinitrosalicylic acid (H2sal) and nine flexible bis(triazole) ligands, namely, [Cu4(sal)4(L1)2(H2O)]·2H2O (1), [Cu4(sal)4(L2)2(H2O)] (2), [Cu2(sal)2(L3)(H2O)] (3), [Cu2(sal)2(L4)(H2O)] (4), [Cu5(sal)4(OH)2(L5)2(H2O)3]·H2O (5), [Cu(sal)(L6)] (6), [Cu2(sal)2(L7)] (7), [Cu(sal)(L8)]·0.5H2O (8), [Cd2(sal)2(L1)(H2O)2] (9), [Cd2(sal)2(L7)3] (10) and [Cd4(sal)4(L9)4] (11), where L1 = 1,2-bis(1,2,4-triazol-1-yl)ethane, L2 = 1,3-bis(1,2,4-triazol-1-yl)propane, L3 = 1,4-bis(1,2,4-triazol-1-yl)butane, L4 = 1,5-bis(1,2,4-triazol-1-yl)pentane, L5 = 1,5-bis(1,3,4-triazol-1-yl)pentane, L6 = 1,6-bis(1,2,4-triazol-1-yl)hexane, L7 = 1,10-bis(1,2,4-triazol-1-yl)decane, L8 = 1,4-bis((1H-1,2,4-triazol-1-yl)methyl)benzene and L9 = 1,1′-(2,2′-oxybis(ethane-2,1-diyl))bis(1H-1,2,4-triazole), have been synthesized and characterized by single crystal X-ray diffraction, elemental analyses, IR spectra, PXRD spectra and TG analysis. Compounds 1 and 4 possess one-dimensional (1D) double chains. Compounds 2, 3 and 5 show two-dimensional (2D) 44 networks. Compound 6 displays a three-dimensional (3D) uninodal eight-connected self-penetrating framework with the 42068 topology. Compound 7 reveals a 2D 2-fold interpenetrating 44-sql network. Compounds 8 and 9 display 2D undulated layers. Compound 10 shows a 1D chain. Compound 11 reveals a discrete tetranuclear cluster. The UV-vis spectra and optical energy gap of 1–11 have also been investigated in detail.
    CrystEngComm 05/2013; 15(21):4357-4371. DOI:10.1039/C3CE00034F · 3.86 Impact Factor
  • Wei Wang · Wei-Qiu Kan · Jin Yang · Jian-Fang Ma
    [Show abstract] [Hide abstract]
    ABSTRACT: Seven new coordination polymers based on d10 metals and multidentate N-donor ligands, namely [Na0.4Cd4(htpmb)(L1)3.2(Cl)2(H2O)2.4]·0.8H2L1·1.6H2O (1), [Cd4(htpmb)(L1)3(OH)2(H2O)2]·3H2O (2), [Zn2(htpmb)(L1)2]·H2L1·H2O (3), [Zn2(htpmb)(L1)2]·3H2O (4), [Zn2(htpmb)(HL2)4] (5), [Zn2(htpmb)(L3)4] (6), and [Cd4(htpmb)(L4)2(OH)2(H2O)3]·8H2O (7), where htpmb = hexakis(3-(1,3,4-triazol-1-yl)phenoxy-methyl)benzene, H2L1 = 1,4-benzenedicarboxylic acid, H2L2 = 2-hydroxy-benzoic acid, HL3 = benzoic acid and H3L4 = 5-hydroxy-1,3-benzenedicarboxylic acid, have been synthesized under hydrothermal conditions. Compounds 1 and 2 display the same 3D framework with new binodal 6-connected (45·55·65)(46·69) topology based on dinuclear Cd(II) units. Compounds 3 and 4 show identical 3D 2-fold interpenetrating frameworks with rare binodal 4-connected (4·64·8)(42·62·82) topology. Compounds 5 and 6 reveal a similar 1D chain structure. Compound 7 exhibits a 1D double chain structure. The complexes were structurally characterized by single-crystal X-ray diffraction analyses, elemental analyses, powder X-ray diffraction (PXRD), ultraviolet-visible absorption spectra (UV-vis), and infrared spectra (IR). The influences of coordination modes of the htpmb, and pH values on the structures of the coordination polymers have been discussed. The effects of central metals, carboxylate anions, and N-donor ligand on the final topologies have been discussed. The luminescent properties of the seven compounds have also been investigated in detail.
    CrystEngComm 04/2013; 15(19):3824-3834. DOI:10.1039/C3CE40119G · 3.86 Impact Factor
  • Ai-Ting Pu · Jin Yang · Wei-Qiu Kan · Yan Yang · Jian-Fang Ma
    [Show abstract] [Hide abstract]
    ABSTRACT: Ten new coordination polymers, namely, [Cd(L)(pbib)0.5] (1), [Ni(L)(pbib)]·2H2O (2), [Cd2(L)2(pytp)2]·H2O (3), [Cd(L)(tbpy)] (4), [Ni(L)(pytp)] (5), [Ni(L)(tbpy)]·0.25H2O (6), [Cd(L)(biim-6)0.5] (7), [Cd(L)(phen)] (8), [Cd3(L)3(H2O)]·H2O (9), and [Cd3(L)3(biim-4)0.5]·6H2O (10), where biim-4 = 1,1′-(1,4-butanediyl)bis(imidazole), biim-6 = 1,1′-(1,6-hexanedidyl)bis(imidazole), pbib = 1,4-bis(imidazol-1-ylmethyl)benzene, phen = 1,10-phenanthroline, pytp = 2-(6′-(pyridin-2″-yl)-4′-p-tolylpyridin-2′-yl)pyridine, tbpy = 2-(4′-(4″-tert-butylphenyl)-6′-(pyridin-2″-yl)pyridin-2′-yl)pyridine and H2L = 3-carboxy-1-(4′-(2″-carboxy)biphenylmethyl)-2-oxidopyridinium, have been synthesized under hydrothermal conditions. Their structures have been determined by single-crystal X-ray diffraction analyses and further characterized by infrared spectra (IR), elemental analyses, powder X-ray diffraction (PXRD) and thermogravimetric (TG) analyses. Compounds 1 and 2 show layer structures. Neighboring layers are further linked by π–π stacking interactions to form 3D supramolecular architectures. Compound 3 consists of two crystallographically different dimers, which are further linked by π–π and hydrogen-bonding interactions into a 2D supramolecular architecture. Compounds 4–6 feature chain structures. In 4, neighboring chains are stacked by π–π interactions to result in a 2D supramolecular architecture. In 5, the adjacent chains are linked by π–π interactions to yield a 3D supramolecular architecture. In 6, neighboring chains are further linked by hydrogen-bonding interactions into a 3D supramolecular architecture. Compound 7 exhibits a 2D 63-hcb network. Neighboring networks are further extended by π–π stacking interactions into a 3D supramolecular architecture. Compound 8 displays a (4,4) sheet. Compound 9 reveals a 2D (4,4) network. Compound 10 shows a 3D 5-connected framework with (46·64) topology. The effects of the L anions and the N-donor ligands on the structures of the coordination polymers have been discussed. In addition, the luminescent properties of 1, 3, 4 and 7–10 have also been investigated in details.
    Polyhedron 02/2013; 50(1):556–570. DOI:10.1016/j.poly.2012.11.045 · 2.05 Impact Factor
  • Zhe Zhang · Jian-Fang Ma · Ying-Ying Liu · Wei-Qiu Kan · Jin Yang
    [Show abstract] [Hide abstract]
    ABSTRACT: A series of new coordination polymers, namely, [Zn2(Htrb)0.5(L1)(SO4)]·H2O (1), [Zn1.5(Htrb)0.5(L2)0.5(SO4)]·5H2O (2), [Zn3(Htrb)(SO4)3(H2O)3]·H2O (3), [Zn(Htrb)0.5(L1)]·3.5H2O (4), [Cd(Htrb)0.5(L1)(H2O)]·2.5H2O (5), [Co(Htrb)0.5(L1)(H2O)]·2H2O (6), and [Cu2(Htrb)0.5(L1)2(H2O)]·1.5H2O (7), where Htrb = hexakis(1,2,4-triazol-ylmethy1)benzene, H2L1 = 1,3-benzenedicarboxylic acid and H2L2 = fumaric acid, have been synthesized under hydrothermal conditions. The structures of the seven compounds have been determined by single-crystal X-ray diffraction analyses and further characterized by infrared spectra (IR), elemental analyses, and powder X-ray diffraction (PXRD). Compound 1 displays a 3D (4,8)-connected net with the rare (32·42·52)(36·48·510·64) topology. Compound 2 shows a typical 3D (4,6)-connected (44·62)(44·610·8) net. Compound 3 furnishes an unusual 3D (3,5,6)-connected net with (42)2(63)(42·68)3(42·86·103)2 topology. Compounds 4–6 exhibit similar 2D layer structures with (4,4)-connected (4·64·8)(42·64) topology. Compound 7 possesses a 3D 2-fold interpenetrating (3,4,6)-connected net with (4·62)(8·65)(42·68·83·102) topology. The effects of the Htrb ligand and anions on the structures of the coordination polymers have been discussed. In addition, photoluminescent properties of the compounds have also been investigated in detail.
    CrystEngComm 02/2013; 15(10):2009-2018. DOI:10.1039/C3CE26874H · 3.86 Impact Factor
  • Source
    Yuan-Chun He · Jin Yang · Wei-Qiu Kan · Jian-Fang Ma
    [Show abstract] [Hide abstract]
    ABSTRACT: A rare example of an ideal rhombic dodecahedron (rdo), MOP-1, has been successfully synthesized from six dinuclear paddlewheel units and eight flexible triangular carboxylate ligands, which shows highly efficient adsorption of dyes in an aqueous solution.
    CrystEngComm 01/2013; 15(5):848-851. DOI:10.1039/C2CE26836A · 3.86 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Templated by iodine molecules, the first example of an I2-containing In(III)-MOF, [In2(pydc)3(H2O)]·0.5I2·0.5H2O, has been prepared. It shows a rare single-crystal-to-single-crystal (SCSC) transformation upon removal the lattice iodine molecules.
    CrystEngComm 01/2013; 15(37):7406. DOI:10.1039/c3ce41337c · 3.86 Impact Factor
  • Wei-Qiu Kan · Jin Yang · Ying-Ying Liu · Jian-Fang Ma
    [Show abstract] [Hide abstract]
    ABSTRACT: Series of inorganic-organic hybrid materials based on octamolybdates, silver ions, and multidentate N-donor ligands, namely, [Ag(2)(2,3'-tmbpt)(β-Mo(8)O(26))(0.5)] (1), [Ag(2)(2,4'-tmbpt)(2)(α-Mo(8)O(26))(0.5)(H(2)O)(0.5)]·2H(2)O (2), [Ag(3)(3,3'-tmbpt)(2)(α-H(2)Mo(8)O(26))(0.5)(β-Mo(8)O(26))(0.5)]·3.5H(2)O (3), [Ag(2)(3,3'-tmbpt)(ε-Mo(8)O(26))(0.5)]·1.75H(2)O (4), [Ag(2)(3,4'-tmbpt)(2)(β-Mo(8)O(26))(0.5)]·0.5H(2)O (5), and [Ag(3,4'-Htmbpt)(β-Mo(8)O(26))(0.5)] (6), where 2,3'-tmbpt = 1-((1H-1,2,4-triazol-1-yl)methyl)-3-(3-pyridyl)-5-(2-pyridyl)-1,2,4-triazole), 2,4'-tmbpt = 1-((1H-1,2,4-triazol-1-yl)methyl)-3-(4-pyridyl)-5-(2-pyridyl)-1,2,4-triazole), 3,3'-tmbpt = 1-((1H-1,2,4-triazol-1-yl)methyl)-3,5-bis(3-pyridyl)-1,2,4-triazole, and 3,4'-tmbpt = 1-((1H-1,2,4-triazol-1-yl)methyl)-3-(4-pyridyl)-5-(3-pyridyl)-1,2,4-triazole) have been synthesized under hydrothermal conditions. Compound 1 displays a rare 3D (3,4,8)-connected net with (4·8(2))(4(2)·8(4))(4(3)·8(20)·10(5)) topology. Compound 2 shows a rare 3D (4,6)-connected self-catenated framework with (6(4)·8(2))(4(2)·6(3)·8(2))(4(2)·6(8)·8(4)·10) topology. Compound 3 is a scarce 3D framework based on two different kinds of [Mo(8)O(26)](4-) isomers. Compound 4 exhibits a 3D framework constructed by silver-organic sheets and the rare [ε-Mo(8)O(26)](4-) anions. Compound 5 shows an interesting 1D → 2D polythreaded structure. Compound 6 displays a 2D layer structure, which is further linked by the N-H···O hydrogen bonds to form a 3D supramolecular architecture. Their structures have been further characterized by infrared spectra (IR), elemental analyses, powder X-ray diffraction (PXRD), electrochemistry and photoluminesce. Moreover, the photocatalytic activities for degradation of organic pollutant have been investigated for compounds 3-6.
    Inorganic Chemistry 10/2012; 51(21). DOI:10.1021/ic300134z · 4.79 Impact Factor
  • Wei-Qiu Kan · Jin Yang · Ying-Ying Liu · Jian-Fang Ma
    [Show abstract] [Hide abstract]
    ABSTRACT: A series of coordination polymers, namely, [Zn(2,3′-tmbpt)(o-bdc)(H2O)] (1), [Zn(2,3′-tmbpt)(m-bdc)] (2), [Zn(2,3′-tmbpt)(p-bdc)]·H2O (3), [Zn2(2,3′-tmbpt)(btc)(OH)]·0.5H2O (4), [Zn(2,3′-tmbpt)(btec)0.5]·2H2O (5), [Zn(3,3′-tmbpt)(o-bdc)]·H2O (6), [Zn(3,3′-tmbpt)(m-bdc)(H2O)]·H2O (7), and [Zn2(3,3′-tmbpt)(btc)(OH)(H2O)] (8), where 2,3′-tmbpt = 1-((1H-1,2,4-triazol-1-yl)methyl)-3-(3-pyridyl)-5-(2-pyridyl)-1,2,4-triazole, 3,3′-tmbpt = 1-((1H-1,2,4-triazol-1-yl)methyl)-3,5-bis(3-pyridyl)-1,2,4-triazole, o-H2bdc = 1,2-benzenedicarboxylic acid, m-H2bdc = 1,3-benzenedicarboxylic acid, p-H2bdc = 1,4-benzenedicarboxylic acid, H3btc = 1,3,5-benzenetricarboxylic acid, and H4btec = 1,2,4,5-benzenetetracarboxylic acid, have been synthesized under hydrothermal conditions. The structures of 1–8 have been determined by single-crystal X-ray diffraction analyses and were further characterized by infrared spectroscopy (IR), elemental analyses and powder X-ray diffraction (PXRD) analyses. Compounds 1 and 6 display 1D chain structures. Compound 2 shows a 3D 2-fold interpenetrating CdSO4 framework. Compound 3 reveals a 2D 2-fold interpenetrating square layer (sql) structure. Compound 4 exhibits a 3D 2-fold interpenetrating framework with (63)(69·8) topology. Compound 5 shows a non-interpenetrating 3D framework with (83)(85·10) topology. Compound 7 has a 2D layer structure. Compound 8 displays a 3D 2-fold interpenetrating framework with (4·62)(42·68·85) topology. The structural discrepancies of compounds 1–8 imply that the organic anions play an important role in the formation of the resultant structures of the coordination polymers. The luminescent properties of compounds 1–8 have also been investigated.
    CrystEngComm 09/2012; 14(20):6934-6945. DOI:10.1039/C2CE25907A · 3.86 Impact Factor
  • Wei-Qiu Kan · Jin Yang · Ying-Ying Liu · Jian-Fang Ma
    [Show abstract] [Hide abstract]
    ABSTRACT: A series of coordination polymers, namely, [Cd(4,4′-tmbpt)(o-bdc)(H2O)]·5.25H2O (1), [Cd(4,4′-tmbpt)(m-bdc)] (2), [Cd(4,4′-tmbpt)(5–OH–bdc)] (3), [Cd5Na2(4,4′-tmbpt)2(btc)4(H2O)3.5]·6.5H2O (4), [Cd3(4,4′-tmbpt)(btc)2(H2O)2]·H2O (5), [Zn(4,4′-tmbpt)(m-bdc)] (6), [Zn3(4,4′-tmbpt)2(p-bdc)3]·5.5H2O (7), and [Zn3(4,4′-tmbpt)(btc)2(H2O)2]·H2O (8), where 4,4′-tmbpt = 1-((1H-1,2,4-triazol-1-yl)methyl)-3,5-bis(4-pyridyl)-1,2,4-triazole, o-H2bdc = 1,2-benzenedicarboxylic acid, m-H2bdc = 1,3-benzenedicarboxylic acid, 5–OH–H2bdc = 5-hydroxy-1,3-benzenedicarboxylic acid, H3btc = 1,2,3-benzenetricarboxylic acid and p-H2bdc = 1,4-benzenedicarboxylic acid, have been synthesized under hydrothermal conditions. Their structures have been determined by single-crystal X-ray diffraction analyses and further characterized by infrared spectra (IR), elemental analyses and powder X-ray diffraction (PXRD) analyses. Compounds 1, 3 and 7 display different 2D → 3D interdigitated structures. Compound 2 shows a 3D 6-connected framework with (412·63) topology. Compound 4 reveals a 3D (3,4,8)-connected net based on hexanuclear units. Compounds 5 and 8 are isostructural and display 3D (3,9)-connected frameworks based on trinuclear units. Compound 6 exhibits an unusual 2D → 3D polythreaded framework. The structural discrepancies of compounds 1–8 indicate that the presence of the different organic anions play important roles in the formation of the final structures of the coordination polymers. The luminescent properties were also investigated for the compounds 1–8.
    CrystEngComm 08/2012; 14(19):6271-6281. DOI:10.1039/C2CE25388G · 3.86 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: We describe an exceedingly rare example of solid-state single-crystal-to-single-crystal transformation from a 2D layer to a known 3D framework via lattice iodine release, which involves the formation of a new Cu-O ligand bond and a change in the metal coordination geometry.
    Chemical Communications 08/2012; 48(63):7859-61. DOI:10.1039/c2cc33831a · 6.83 Impact Factor