issue contents

Journal logoSTRUCTURAL
ISSN: 2053-2296

December 2003 issue

Highlighted illustration

Cover illustration: The molecular packing and unit cell of L-alanyl-L-methionine hemihydrate, viewed along the a axis. See Görbitz [Acta Cryst. (2003), C59, o730-o732].

inorganic compounds

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The structure of twinned α-LiRb2(CF3SO3)3 consists of channel-like patterns built up of lipophilic CF3 groups pointing towards each other, with the polar interstices occupied by cations.

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The structures of LiY9(SiO4)6O2 and NaY9(SiO4)6O2 have been determined from single-crystal X-ray diffraction data collected near room temperature and at 100 K. The structures are very similar to one another and to that of fluorine apatite.

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The title compound crystallizes with a partially ordered Pu3Pd5-type structure in space group Cmcm. The 8f and 4c positions are statistically occupied by Ga and Sn atoms, while the 8g position is occupied overwhelmingly by Sn atoms.

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The crystal structure of a barium titanate that had been reported previously in the centrosymmetric space group C2/m was found to be non-centrosymmetric, with space group C2. The present results are in accordance with the recently observed ferroelectricity of this compound.

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LaInO3, a promising ion conductor for a holistic solid oxide fuel cell, was synthesized by a solid-state reaction method. The structure was refined by the Rietveld method using X-ray powder diffraction data. The structure of LaInO3 is distorted by the in-phase and antiphase tilting of oxy­gen octahedra in the a+bb system of the InO6 polyhedra.

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The structure of the vanadate garnet Ca2NaMg2V3O12 is characterized by (Ca,Na)O8 dodecahedra and MgO6 octahedra with unusually long shared edges.

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A single-crystal X-ray study has confirmed that MgI2 is isostructural with CdI2.

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An acentric 2a0 × 2b0 × c0 superstructure of α-potassium nitrate has been detected with a CCD area detector.

metal-organic compounds

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The crystal structures of the two bismuth(III) oxalate hydrates [Bi2(C2O4)3(H2O)4]·4H2O and [Bi2(C2O4)3(H2O)4]·2H2O are both based on three-dimensional networks of nine-coordinated Bi atoms, connected by tetradentate oxalate groups. The ligand and `free' water mol­ecules are located in channels and voids.

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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