issue contents

Journal logoSTRUCTURAL
ISSN: 2053-2296

May 2001 issue

Highlighted illustration

Cover illustration: View of the tri­aqua­hexakis([mu]2-betaine-O:O')-[mu]3-oxo-triiron(III) bis­(tetra­chloro­manganate) cation. Displacement ellipsoids are drawn at the 50% probability level. See Ramos Silva, Matos Beja, Paixão, Alte da Veiga & Martin-Gil [Acta Cryst. (2001), C57, 542-545].

inorganic compounds

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β-RbSb crystallizes with the LiAs structure type. As in the α phase (NaP type), Sb forms approximate 41 helical chains (21 crystallographic symmetry), with Sb—Sb distances of 2.838 (1) and 2.862 (1) Å. In contrast to the α phase, the helices have different chirality.

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The antimonide oxide Ba3Sb2O consists of discrete [Sb2]4− and O2− anions, and crystallizes with a new structure type. The Sb—Sb distances are comparable to those known from electron-precise zintl phases and the tetrahedral coordination of the O2− anion is also observed in some other Ba-rich metallide oxides.

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The anion of the title compound has the α-Keggin structure, with a central tetrahedrally coordinated BIII atom surrounded by four groups of three edge-sharing octahedra (W3O13 subunits) which are linked in turn to each other and to the central BO4 tetrahedron by shared O atoms at the vertices.

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The tetrahedral framework phase (NH4)ZnPO4–HEX contains an undisordered linear Zn—O—P bond.

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KSbO(Ge0.32Si0.68)O4 is isomorphic with KTP, i.e. KTiOPO4. It contains mixed (Ge/Si)O4 tetrahedra with the same distribution in each independent tetrahedron and split potassium-cation positions. The crystal is paraelectric (space group Pnan) at room temperature.

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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