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  • 1.
    Jalilian, Ehsan
    et al.
    Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
    Lidin, Sven
    Lunds universitet, Polymer- och materialkemi.
    Poly[dimethyldiphenylphosphonium [di-μ4-iodido-tetra-μ3-iodido-pentacopper(I)]]2010In: Acta Crystallographica Section C: Crystal Structure Communications, ISSN 0108-2701, E-ISSN 1600-5759, no C66, p. m227-m230Article in journal (Refereed)
    Abstract [en]

    The title compound, {(C14H16P)[Cu5I6]}n, prepared from the reaction between copper powder, iodine and dimethyldiphenylphosphonium iodide in hydroxyacetone, features an anion that consists of a continuous two-dimensional Cu-I sheet [Cu-I = 2.5960 (14)-2.6994 (13) Å and Cu-I-Cu = 63.28 (5)-114.25 (5)°]. The cation, which lies on a mirror plane, is a typical dimethyldiphenylphosphonium ion. The structure shows a strong tendency towards segregation of the inorganic and organic parts of the structure into separate subspaces. The two-dimensional Cu-I sheet displays a pronounced subcell with pseudo-tetragonal symmetry that is broken by ordered vacancies on the Cu position. The symmetry is further reduced by the orientation of the interleaved organic counter-ion that is inclined with respect to the pseudo-mirror planes defined by the Cu-I sheet normal, perpendicular to the b axis.

  • 2.
    Jonsson, K. Hanna M.
    et al.
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    Eriksson, Lars
    Stockholm University, Faculty of Science, Department of Physical, Inorganic and Structural Chemistry.
    Widmalm, Göran
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    Methyl 4-O-benzoyl-2,3-O-isopropylidene-a-L-rhamnopyranoside2006In: Acta Crystallographica Section C: Crystal Structure Communications, ISSN 0108-2701, E-ISSN 1600-5759, Vol. 62, no 8, p. o447-o449Article in journal (Refereed)
    Abstract [en]

    The title compound, C17H22O6, having an ester group at O4 of the hexopyranosyl sugar residue shows for the exo-cyclic C=O bond a conformation that is eclipsed to the C4-H4 bond. The two related torsion angles are denoted by syn and cis conformations. The q1 torsion angle (H4-C4-O4-C10) is indicated to have a similar conformation in solution as analyzed by NMR spectroscopy and a Karplus-type relationship.

  • 3. Karmakar, Anirban
    et al.
    Platero-Prats, Ana E.
    Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
    Öhrström, Lars
    A new methanol solvate and Hirshfeld analysis of pi-stacking in 2,3,6,7,10,11-hexahydroxytriphenylene solvates2013In: Acta Crystallographica Section C: Crystal Structure Communications, ISSN 0108-2701, E-ISSN 1600-5759, Vol. 69, p. 251-U134Article in journal (Refereed)
    Abstract [en]

    The structure of 2,3,6,7,10,11-hexahydroxytriphenylene (hhtp) methanol monosolvate, C18H12O6 center dot CH3OH, has triclinic symmetry (space group P (1) over bar). The compound has a three-dimensional layered network structure formed by inter-molecular hydrogen bonding. Structure analysis with Hirshfeld surfaces is shown to be a sensitive method for comparing pi-stacking effects in the five known solvates of hhtp. The title structure shows slightly weaker pi-stacking than the dihydrate, but stronger pi-stacking than the other three solvates.

  • 4.
    Svensson, Gunnar
    et al.
    Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
    Eriksson, Lars
    Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
    BaNb4-xTixO6 (x = 0.53)1999In: Acta Crystallographica Section C: Crystal Structure Communications, ISSN 0108-2701, E-ISSN 1600-5759, Vol. C55, p. 17-19Article in journal (Refereed)
    Abstract [en]

    The title compound, barium niobium titanium oxide, is isostructural with BaNb4O6, i.e. it contains alternating NbO and perovskite-type single slabs. The NbO slabs can alternatively be described as layers of Nb6O12 clusters, condensed via corner sharing among the central Nb6 octahedra.

  • 5.
    Zhang, Dong
    et al.
    Stockholm University, Faculty of Science, Department of Physical, Inorganic and Structural Chemistry.
    Johnsson, Mats
    Stockholm University, Faculty of Science, Department of Physical, Inorganic and Structural Chemistry.
    Nickel vanadium tellurium oxide, NiV2Te2O102009In: Acta Crystallographica Section C: Crystal Structure Communications, ISSN 0108-2701, E-ISSN 1600-5759, Vol. 65, p. i9-i10Article in journal (Refereed)
    Abstract [en]

    Single crystals of a nickel vanadium tellurium oide were synthesized. The crystal structure is layered. The buliding units are VO~6~ octahedra and NiO~6~ octahedra and TeO~4~E distorted square pyramids (E being the 5s2^ lone-electron pair of Te^IV^).

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