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Three-dimensional Supramolecular Network (three-dimensional + supramolecular_network)
Selected AbstractsA Terephthalato-Bridged NiII Complex Capped with a Nonchelating Ligand Displays a Three-Dimensional Supramolecular Network Constructed by Coordination and Multi-Intermolecular ForcesEUROPEAN JOURNAL OF INORGANIC CHEMISTRY, Issue 23 2005Chang Seop Hong Abstract A new tp-bridged complex [Ni(pyrazole)4(tp)]n (1; tp = terephthalate) coordinated with a nonchelating pyrazole ligand has been synthesized and characterized using X-ray structure determination and magnetic studies. The crystal structure reveals that the capping ligand functions as a source of hydrogen bonding and intermolecular contacts, such as ,,, and CH,, interactions, that result in a three-dimensional supramolecular assembly. Weak antiferromagnetic couplings are transmitted between NiII centers through the tp linkage. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005) [source] An ice-like water hexamer with symmetry in the hydrogen-bonded structure of 2,3,5,6-tetrafluoro-1,4-bis(imidazol-1-ylmethyl)benzene dihydrateACTA CRYSTALLOGRAPHICA SECTION C, Issue 4 2010Huan Xu An ice-like hexameric water cluster, stabilized by the flexible bis-imidazolyl compound 2,3,5,6-tetrafluoro-1,4-bis(imidazol-1-ylmethyl)benzene (Fbix), is found in the trigonal R crystal structure of the title compound, C14H10F4N4·2H2O or Fbix·2H2O. The Fbix molecule lies about an inversion centre with one water molecule in the asymmetric unit in a general position. A cyclic chair-like hexameric water cluster with symmetry is generated with a hydrogen-bonded O...O distance within the hexamer of 2.786,(3),Å. The Fbix molecule adopts a trans conformation, where the imidazole ring makes a dihedral angle of 70.24,(11)° with the central tetrafluorinated aromatic ring. Each water hexamer is connected by six Fbix molecules through intermolecular O,H...N hydrogen bonds [N...O = 2.868,(3),Å] to yield a three-dimensional supramolecular network with primitive cubic (pcu) topology. Large voids in each single pcu network lead to fourfold interpenetrated aggregates of Fbix·2H2O. [source] Hydrogen-bonded zigzag chains in 2,2,-dithiodibenzoic acid,1,3-di-4-pyridylpropane (1/1)ACTA CRYSTALLOGRAPHICA SECTION C, Issue 9 2009Li-Li Wang The title 1:1 cocrystal, C14H10O4S2·C13H14N2 or H2L·bpp, has the two components connected by O,H...N hydrogen bonds to generate a one-dimensional zigzag chain running along the crystallographic a direction. These chains are further stacked into a three-dimensional supramolecular network by weak C,H...O and C,H..., contacts. Comparison of the structural differences with previous findings suggests that deprotonated forms, hydrogen-bonding sites and flexible ligand conformations become significant factors that influence the topological arrangement and binding stoichiometry of the resulting cocrystals. [source] A novel metallo-organically templated pentaborate: acetato[N,N,-bis(2-aminoethyl)ethane-1,2-diamine]zinc(II) 4,4,,6,6,-tetrahydroxy-2,2,-spirobi[cyclotriboroxane](1,)ACTA CRYSTALLOGRAPHICA SECTION C, Issue 8 2009Shu-Li Wu The title compound, [Zn(C2H3O2)(C6H18N4)][B5O6(OH)4], contains mixed-ligand [Zn(CH3COO)(teta)]+ complex cations (teta is triethylenetetramine) and pentaborate [B5O6(OH)4], anions. The [B5O6(OH)4], anions are connected to one another through hydrogen bonds, forming a three-dimensional supramolecular network, in which the [Zn(CH3COO)(teta)]+ cations are located. [source] A novel (3,4,10)-connected three-dimensional hydrogen-bonded supramolecular network containing a cyclic water hexamerACTA CRYSTALLOGRAPHICA SECTION C, Issue 6 2009Yan Zhou The title compound, 4,4,-(1,1,1,3,3,3-hexafluoroisopropylidene)diphthalic acid hexahydrate, C19H10F6O8·6H2O, crystallizes in the centrosymmetric space group Pbcn, with half of the diphthalic acid residue and three water molecules in the asymmetric unit. The organic molecule is located on a crystallographic twofold axis. In the solid, cyclic water hexamers in chair conformations have crystallographically imposed inversion symmetry. Strong O,H...O hydrogen bonds between the hexamers and organic molecules result in a unique three-dimensional supramolecular network [O...O = 2.554,(2),2.913,(2),Å]. This compound represents the first example of a (3,4,4,10)-connected four-nodal supramolecular topology with the Schläfli symbol (43.5.6.7)2(43.52.7)2(43)2(46.56.62.78.814.99). [source] trans -Diaquabis(nicotinamide-,N)bis(salicylato-,O)cobalt(II)ACTA CRYSTALLOGRAPHICA SECTION C, Issue 10 2008The title compound, [Co(C7H5O3)2(C6H6N2O)2(H2O)2], forms a three-dimensional hydrogen-bonded supramolecular structure. The CoII ion is in an octahedral coordination environment comprising two pyridyl N atoms, two carboxylate O atoms and two O atoms from water molecules. Intermolecular N,H...O and O,H...O hydrogen bonds produce R22(8), R22(12) and R22(14) rings, which lead to two-dimensional chains. An extensive three-dimensional supramolecular network of C,H...O, N,H...O and O,H...O hydrogen bonds and C,H..., interactions is responsible for crystal structure stabilization. This study is an example of the construction of a supramolecular assembly based on hydrogen bonds in mixed-ligand metal complexes. [source] A one-dimensional nickel(II) coordination polymer containing 2,6-dipicolinate and dipyrido[3,2- a:2,,3,- c]phenazineACTA CRYSTALLOGRAPHICA SECTION C, Issue 12 2007Yi Ma A new coordination polymer, catena -poly[[(dipyrido[3,2- a:2,,3,- c]phenazine-,2N,N,)nickel(II)]-,-2,6-dipicolinato-,4O2,N,O6:O2,], [Ni(C7H3NO4)(C18H10N4)]n, exhibits a one-dimensional structure in which 2,6-dipicolinate acts as a bridging ligand interconnecting adjacent nickel(II) centers to form a chain structure. The asymmetric unit contains one NiII center, one dipyrido[3,2- a:2,,3,- c]phenazine ligand and one 2,6-dipicolinate ligand. Each NiII center is six-coordinated and surrounded by three N atoms and three O atoms from one dipyrido[3,2- a:2,,3,- c]phenazine ligand and two different 2,6-dipicolinate ligands, leading to a distorted octahedral geometry. Adjacent chains are linked by ,,, stacking interactions and weak interactions to form a three-dimensional supramolecular network. [source] Synthesis, Crystal Structure and Photoluminescent Properties of Two Novel Two-dimensional Coordination Networks Assembled by Lanthanide Salts and Carboxylate Ligand,CHINESE JOURNAL OF CHEMISTRY, Issue 1 2009Yajuan LI Abstract Two novel two-dimensional (2D) lanthanide(III) coordination polymers [Ln(PDC)(OH)(H2O)2]n (Ln=Eu (1) and Tb (2), H2PDC=pyridine-3,4-dicarboxylic acid) have been synthesized under hydrothermal conditions, and characterized by elemental analysis, IR, TGA and single-crystal X-ray diffraction. Both compounds show the same 2D layer containing 1D Ln,O,Ln chains, and the layers are further connected through hydrogen-bonding as well as ,-, stacking interactions into a three-dimensional supramolecular network. Furthermore, both compounds exhibit intense fluorescent emission bands in the solid state at room temperature. [source] | ||||||||||