issue contents

Journal logoSTRUCTURAL
ISSN: 2053-2296

September 2007 issue

Highlighted illustration

Cover illustration: Poly[([mu]3-1,1-dioxo-1,2-benzo­iso­thiazole-3-thiol­ato)silver(I)] consists of dinuclear units in which two thio­saccharinate anions each bridge two Ag atoms via an endocyclic N atom and an exocyclic S atom across a crystallographic centre of inversion midway between the Ag atoms. The dimeric units are connected via Ag-Sexo inter­actions to create two-dimensional networks. See Dennehy, Quinzani & Burrow [Acta Cryst. (2007), C63, m395-m397].

inorganic compounds

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In Sr(BF4)2, which is isomorphous with the previously published Ca(BF4)2, the metal atom is eight-coordinated with a square-anti­prismatic environment. Each tetra­fluorido­borate anion is bonded to four metal centers. In the barium derivative, the metal center, with symmetry 2/m, is surrounded by 14 F atoms. The B atom and two of the three independent F atoms occupy special positions with symmetry m. Each anion is connected to five Ba atoms.

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In the nearly tetra­hedral rhenate(VII) anion of calcium chloride rhenate(VII) dihydrate, all constituent atoms lie on special positions of m2m (Re) and m (O) site symmetries. The Cl anion and water O atom lie on special positions of m2m and 2 site symmetry, respectively. The Ca2+ ion, also on a special position (m2m), is eight-coordinated in a distorted square-anti­prismatic coordination mode. The crystal has a layered structure stabilized by Ca—O coordination bonds as well as O—H⋯Cl hydrogen bonds.

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A new compound, B13N2, has been synthesized under high pressure. It crystallizes in the R\overline{3}m space group and features distorted B12 icosa­hedra linked by N—B—N chains, giving rise to a three-dimensional framework.

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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