# forthcoming articles in Acta Crystallographica Section A

The following articles are a selection of those recently accepted for publication in
*Acta Crystallographica Section A: Foundations of Crystallography*.

See also Forthcoming articles in all IUCr journals.

Accepted 26 February 2015### More statistics on intermetallic compounds - ternary phases

### J. Dshemuchadse and W. Steurer

**Synopsis: **Ternary intermetallics - 13 026 compounds contained in the database *Pearson's Crystal Data* - are discussed with respect to their components, structure types and stoichiometries.

Accepted 24 February 2015### Unique atom hyper-kagome order in Na_{4}Ir_{3}O_{8} and in low-symmetry spinel modifications

### V. M. Talanov, V. B. Shirokov and M. V. Talanov

Accepted 24 February 2015### Icosahedral symmetry breaking: C_{60} to C_{84}, C_{108} and to related nanotubes

### M. Bodner, E. Bourret, J. Patera and M. Szajewska

**Synopsis: **The structure of a particular type of hollow-cage higher fullerene (C_{60+N24}) is described and their construction explained from a symmetry-breaking mechanism starting from perfect icosahedral symmetry of C_{60} to specific subgroups *A*_{1} × *A*_{1}. This mechanism expands and completes previous results describing the existence of other groups of fullerenes (C_{60+N10}, C_{60+N18}) based on the breaking of icosahedral symmetry of C_{60} to the subgroups *H*_{2} and *A*_{2}. The mechanism is extended to describe the cases that generate carbon nanotubes.

Accepted 20 February 2015### Determination of small crystal structures from a minimum set of diffraction intensities by homotopy continuation

### D. Leggas and O. V. Tsodikov

**Synopsis: **A method from numerical algebraic geometry, called homotopy continuation, is used to determine small crystal structures of four or fewer atoms directly from a minimum set of diffraction intensities.

Accepted 12 February 2015### Magnetic structure determination from the magnetic pair distribution function (mPDF): ground state of MnO

### B. A. Frandsen and S. J. L. Billinge

**Synopsis: **Combined atomic and magnetic pair distribution function (PDF) refinements have been performed against neutron scattering data from MnO, recovering the expected long-range-ordered antiferromagnetic state and supporting a scenario of monoclinic symmetry on a local length scale of 100 Å. This represents the first experimental application of the magnetic PDF method.

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