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Publications (5)0 Total impact

  • Shi Wen-Juan
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    ABSTRACT: The title compound, {[Cu(C20H14N4)2][Cu2(NCS)4]}n, was obtained by reacting copper acetate hydrate, ammonium thiocyanate and 4′-(3-pyridyl)-2,2′:6′,2′′-terpyridine (3-pytpy) under solvothermal conditions. The polymeric complex is isostructural with the 4′-phenyl-2,2′:6′,2′′-terpyridine (phtpy) analogue. All intramolecular distances and angles are very similar for the two structures. Substitution of a phenyl group with a pyridyl group has no significant effect on the crystal packing which is accomplished by C—H...N and C—H...S hydrogen-bonding interactions.
    Acta Crystallographica Section E. 01/2009;
  • Shi Wen-Juan
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    ABSTRACT: Reaction of 4′-phenyl-2,2′:6′,2′′-terpyridine (phtpy), copper acetate hydrate and ammonium thiocyanate under solvothermal conditions led to the formation of the title compound, {[Cu(C21H15N3)2][Cu2(NCS)4]}n. The structure is composed of discrete [Cu(phtpy)2]2+ cations and polymeric anionic {[Cu(SCN)2]−} chains propagating along [010]. The central Cu2+ ion in the cation is coordinated by two tridentate chelating phtpy ligands in a distorted octahedral geometry. In each of the two crystallographically independent centrosymmetric anions, the CuI atoms are bridged in a 1,3-μ2-bridging mode by two S and two N atoms, resulting in a distorted tetrahedral CuN2S2 coordination. The [Cu(phtpy)2]2+ cations are fixed between these polymers by intermolecular C—H...S hydrogen bonds.
    Acta Crystallographica Section E. 01/2009;
  • Xie Han-Yuan, Zhang Lei, Shi Wen-Juan
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    ABSTRACT: The title complex, [Cu4I4(C21H15N3)2], lies on an inversion centre located at the centroid of a four-membered ring formed by one of the crystallographically independent CuI ions and a triply bridging iodide ligand. The 2,2′:6′,2′′-terpyridine (phterpy) ligand chelates each of the independent CuI centres in a bidentate fashion, with the N atom of the central pyridyl ring bridging the two CuI centres and those of the outer pyridyl rings binding the two independent CuI ions individually to form a dinuclear system. These are further linked by triply-bridging I− anions to form the centrosymmetric tetranuclear units. One independent Cu atom binds to each of the inversion-related I− anions while the other coordinates to one bridging and one terminal monodentate iodide ligand. The outer pyridyl rings are twisted relative to the central pyridyl ring of the phterpy ligand with dihedral angles of 18.7 (1) and 35.6 (1)°, respectively.
    Acta Crystallographica Section E. 01/2008;
  • Shi Wen-Juan
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    ABSTRACT: In the crystal structure of the title compound, [Cu2Br2(dppe)3]·2CH3COCH3 [dppe is 1,2-bis(diphenylphosphino)ethane, C26H24P2], the two Cu centers are bridged by a dppe ligand and each metal center carries one chelating dppe unit, with the fourth coordination site available for the Br− anion. The molecule is centrosymmetric, with the center of symmetry located between the methylene C atoms of the bridging dppe ligand. The crystal structure is stabilized by intramolecular C—H...Br hydrogen bonds and intermolecular π–π interactions, with a centroid-to-centroid distance of 3.2055 (1) Å.
    Acta Crystallographica Section E. 01/2008;
  • Shi Wen-Juan
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    ABSTRACT: In the crystal structure of the title compound, [Cu3Br3(C26H24P2)3]·0.5CH3COCH3, two of the Cu centers are bridged by two bromide anions forming a Cu(μ-Br)2Cu core, which is further bridged by a 1,2-bis(diphenylphosphino)ethane (dppe) ligand. The third Cu center is terminally bound to another bromide ligand and is connected to the other two Cu atoms by bridging dppe ligands, forming a triangular cluster unit. The acetone solvent molecule exhibits twofold disorder about an inversion centre at (1over2, 1, 0). The crystal structure is stabilized by intermolecular C—H...Br hydrogen bonds.
    Acta Crystallographica Section E. 01/2008;