issue contents

Journal logoSTRUCTURAL
ISSN: 2053-2296

March 2011 issue

Highlighted illustration

Cover illustration: The two types of ladder formed by ammonium carboxyl­ate salts. Type II (left) has repeating R43(10) rings, whereas type III (right) has alternating R42(8) and R44(12) rings. The three hydrogen bonds from the -NH3+ cation consist of two legs and one rung. See Lemmerer [Acta Cryst. (2011), C67, o92-o99].

inorganic compounds

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La4.27Mg2.89Zn30, an inter­metallic compound, is a new structure type which crystallizes in the hexa­gonal space group P63/mmc. The structure is an inter­growth of fragments of the CaCu5 and Th2Ni17 types. Strong positional disorder is observed along the six- and threefold axes.

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The novel structure of Na8Ca1.5Mg12.5(PO4)12 consists of MgOx (x = 5 and 6) polyhedra and MO7 (M = Mg or Na) octa­hedra linked directly through common corners or edges to form a rigid three-dimensional skeleton, reinforced by corner-sharing between identical Mg12MO48 units.

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The copper–manganese phosphate solid solution Cu0.5Mn2.5(PO4)2 was prepared by a reaction between its constituent oxides at 1223 K under argon. The compound has a graftonite-type structure, viz. (Mn,Fe,Ca,Mg)3(PO4)2, with CuII located in one of three distinct metal cation sites.

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The crystal structure of La3Cu4.88Se7 contains edge-sharing [LaSe6] and [LaSe7] polyhedra, which are surrounded by copper ions. The five positions for copper determine an ionic diffusion pathway.

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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