issue contents

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296

June 1998 issue

Highlighted illustration

Cover illustration: Star-Shaped Heptanuclear Tetramine Cadmium(II) Complex, see Klüfers & Mayer, pages 722-725. Displacement ellipsoids are shown at the 60% probability level for non-H atoms and perchlorate molecules have been omitted for clarity.

cif-access (inorganic compounds)


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RbCe(SO4)2.H2O has a framework structure composed of discrete sulfate tetrahedra interlinked by nine-coordinate Ce polyhedra. The framework contains large channels in which the Rb atoms reside, in contrast to the layered structure exhibited by the analogous tetrahydrate.

cif-access (organic compounds)


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The porphyrin molecule in this compound shows significant conformational distortion in the vicinity of the beta-nitro group. This is attributed to steric interaction between a meso-phenyl group and the beta-nitro group.

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The phenyl rings in this compound form a dihedral angle of 46.8(1)° and they make dihedral angles of 79.6(1) and 67.7(1)° with the naphthalene ring. The hydroxy groups are involved in O-H⋯O intramolecular hydrogen bonds.

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Ethylene glycol adopts a synclinal conformation in the solid state. The molecules pack to form a two-dimensional network with four hydrogen bridges per molecule [O⋯O 2.711(1) and 2.730(2)Å].

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Very different hydrogen-bonded networks are found in the two forms. The monoclinic form (in which the cation is trans-trans) has open fused columns and a unit-cell volume 5% greater than the triclinic form (in which the cation is trans-gauche), where the network contains fused clusters.

inorganic compounds


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The structure of Nd2(Se2O5)3.H2SeO3.2H2O is built up from polar layers formed by Nd2O16 bipolyhedra and diselenite groups. Water and selenious acid occur on only one side of each layer.

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Magnesium bis(dihydrogenorthophosphate) tetrahydrate contains four-membered rings made up of two [PO4] tetrahedra and two [MgO6] octahedra sharing corners.

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The different colours of turquoise Cs3NiCl5 and orange CsNiCl3 are caused by the tetrahedral coordination of nickel(II) in the former and the octahedral coordination of nickel(II) in the latter.

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Rb4Ta2S11 and Cs4Ta2S11 are new members of the growing family of compounds which contain an M2Q11 unit as a main structural feature. They were prepared via the reactive flux method.

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Mo6Te8, isotypic with Mo6Se8, contains interlinked Mo6Te8 clusters. The eight faces of each distorted Mo6 octahedron are capped by Te atoms, six of which provide bridges to neighboring Mo6Te8 clusters.

metal-organic compounds





























organic compounds