issue contents

Journal logoSTRUCTURAL
ISSN: 2053-2296

July 2007 issue

Highlighted illustration

Cover illustration: Part of the mol­ecular packing of 1,3-dibromo-5,5-dimethyl­imidazolidine-2,4-dione, showing the short inter­molecular contacts (dashed lines). H atoms have been omitted. See Kruszynski [Acta Cryst. (2007), C63, o389-o391].

inorganic compounds

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A new columbite-type modification of CdV2O6 has been synthesized at high pressure. It contains zigzag chains of edge-sharing VO6 octa­hedra. Octa­hedra in adjacent chains share corners and form corrugated layers. Octa­hedrally coordinated Cd atoms, which lie on twofold axes, are situated between the layers.

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Cation-deficient Pb2.63Cd2V3O12 is the first example of a garnet containing lead and cadmium. The Cd and V atoms fully occupy octa­hedral and tetra­hedral sites, respectively, whereas the Pb atoms partially occupy a dodeca­hedral site. The total Pb and Cd content indicates that vanadium is slightly reduced from the +5 oxidation state.

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The noncentrosymmetric Tb3RuO7 structure has been investigated by synchrotron X-ray single-crystal diffraction, revealing that some Tb atoms occupy disordered positions in the P21nb superstructure at room temperature.

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The crystal structure of Ca2Ge7O16 has been redetermined in tetra­gonal symmetry and some comparison is made with Cd2Ge7O16 and AB4O9 structures having A = Sr, P and Ba, and B = Ge.

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The novel title polyvanadate(V) contains [V10O28]6− anions which lie about inversion centres and have approximate 2/m symmetry and which are linked to [Na3(H2O)10]3+ cations through two terminal and two μ2-bridging O atoms. The structure contains three inequivalent Na+ cations, two of which form [Na2(H2O)8]n chains, which are linked via NaO6 octa­hedra involving the third Na+ ion, thus forming a three-dimensional framework.

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The structure of the title compound contains ([Ga{H(HPO4)2}F2]2−)n columns of corner-sharing Ga(F2O4) octa­hedra and phosphate tetra­hedra held together in a three-dimensional structure by K+ cations and hydrogen bonds.

metal-organic compounds

organic compounds

Special and virtual issues

Acta Crystallographica Section C is planning special issues on

The Structural Chemistry of Homogeneous and Heterogeneous Catalysts

NMR Crystallography.

Full details are available on the special issues page.

The latest virtual issue, featuring Coordination polymers and with an introduction by Len Barbour, was published in July 2014.

What are the 'most read' articles from the recent special issues?

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