issue contents

Journal logoSTRUCTURAL
ISSN: 2053-2296

October 1997 issue

Highlighted illustration

Cover illustration: 1:1 Molecular Complex Between Water and a Macrocyclic Crown Phosphonamide, see Declercq, Delangle, Dutasta, Van Oostenryck and Tinant, pages 1484-1486. Displacement ellipsoids are shown at the 50% probability level for non-H atoms.

cif-access (metal-organic compounds)

cif-access (organic compounds)

inorganic compounds

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Ca3Y2(SiO4)3 is isostructural with silico-carnotite, Ca5(PO4)2SiO4. The structure contains isolated SiO4 tetrahedra. The three large cation sites are occupied by both Ca and Y in specific ratios.

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A new determination of the structure of brochantite using a single crystal shows that pairs of Cu atoms are bonded to form almost linear chains bridged by O atoms. The Cu atoms have distorted octahedral coordination to hydroxyl or sulfate O atoms.

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The structure of Cu3Mo2O9 consists of strings of corner-sharing CuO6 octahedra linked to CuO5 square pyramids and MoO4 tetrahedra by edges and corners, respectively. The structure contains the Jahn–Teller active ion Cu2+ in unusual compressed octahedral coordination.

metal-organic compounds

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Rietveld refinement of a new layered molybdate from the [MonO3n+1]2− series, (NH3CH3)2[Mo7O22], showed that the molybdenum coordination polyhedra are significantly distorted octahedra. The methylammonium cations are incorporated between the layers.

organic compounds