issue contents

Journal logoSTRUCTURAL
ISSN: 2053-2296

June 2002 issue

Highlighted illustration

Cover illustration: Part of the crystal structure of 2-amino-4,6-bis(benzyloxy)-5-nitrosopyrimidine, showing the hard hydrogen bonds and the long N-H...[pi](arene) contact. See Quesada, Low, Melguizo, Nogueras & Glidewell [Acta Cryst. (2002), C58, o355-o358].

inorganic compounds

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A new compound with the [Ta6Br12(H2O)6]2+ cluster cation is isoconfigurational with the double salts [Ta6Br12(H2O)6]X2·trans-[Ta6Br12(OH)4(H2O)2]·18H2O (X = Cl, Br).

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The crystal structure of Li2BaP2O7 has been refined in monoclinic space group C2/c. Tunnels parallel to the (010) plane house Li atoms. A previous report of the structure in orthorhombic space group Cmcm included no R factor or positional parameters.

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The two title compounds crystallize with a layer structure housing tunnels which contain the alkali metal atoms.

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The crystal structures of the title compounds consist of acidic pyrophosphate–metallate(II) layers joined by K+ ions and hydrogen-bridging bonds. The Zn2+/Mn2+ ions are octahedrally surrounded by four pyrophosphate O atoms and by two water mol­ecules. The (HP2O7)3− anions exhibit eclipsed conformations.

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The atomic arrangement of hydro­cerussite is closely related to the structures of other lead hydro­xide carbonates. It can be viewed as a sequence of two types of layers stacked along [001].

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The structure of the title compound is based on [Nb6Cli12Cla6]4− cluster anions (i and a denote `inner' and `outer' ligands, respectively), linked together by K+ and Sr2+ cations

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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