Foundations of Crystallography

Acta Cryst. (2007). A63, 375-379  [ doi:10.1107/S0108767307039062 ]

Durward William John Cruickshank (1924-2007)

J. R. Helliwell and S. C. Abrahams

Online 17 August 2007

Acta Cryst. (2007). A63, 380-386  [ doi:10.1107/S0108767307032187 ]

Diffuse scattering from large-angle, thermally induced, orientational disorder in molecular crystals

J. Reid, M. Moore and L. MacNay

Synopsis: A method is described of including large-angle librations in the scattering calculated from molecular solids. Results are presented for three sample materials.

Online 17 August 2007

Acta Cryst. (2007). A63, 387-390  [ doi:10.1107/S0108767307029169 ]

Structural phase and amplitude measurement from distances in convergent-beam electron diffraction patterns

P. N. H. Nakashima, A. F. Moodie and J. Etheridge

Synopsis: The first direct experimental measurements of structural phase and amplitude in a centrosymmetric crystal from distances in three-beam convergent-beam electron diffraction patterns are presented as a solution to the `phase problem'.

Online 17 August 2007

Acta Cryst. (2007). A63, 391-399  [ doi:10.1107/S0108767307031212 ]

Random tilings of compact Euclidean 3-manifolds

J. G. Escudero

Synopsis: Non-periodic deterministic and random tilings for the ten compact Euclidean 3-manifolds are introduced and their configurational entropies are computed.

Online 17 August 2007

Acta Cryst. (2007). A63, 400-406  [ doi:10.1107/S0108767307036112 ]

A charge-flipping algorithm incorporating the tangent formula for solving difficult structures

A. A. Coelho

Synopsis: An algorithm is described that incorporates the direct-methods tangent formula into the structure solution method of charge flipping and the subsequent avoidance of `uranium atom' solutions.

Online 17 August 2007

Acta Cryst. (2007). A63, 407-411  [ doi:10.1107/S010876730703797X ]

Scanning of magnetic space groups and the analysis of non-magnetic domain walls

V. Janovec and D. B. Litvin

Synopsis: Using scanning of magnetic space groups, the possible displacement of atoms at the center of non-magnetic domain walls is determined.

Online 17 August 2007

Acta Cryst. (2007). A63, 412-417  [ doi:10.1107/S0108767307038081 ]

The introduction of structure types into the Inorganic Crystal Structure Database ICSD

R. Allmann and R. Hinek

Synopsis: The approach used and the progress made in the assignment of structure types to the crystal structures contained in the ICSD database are reported.

Online 17 August 2007

Acta Cryst. (2007). A63, 418-425  [ doi:10.1107/S0108767307038287 ]

Three-periodic nets and tilings: natural tilings for nets

V. A. Blatov, O. Delgado-Friedrichs, M. O'Keeffe and D. M. Proserpio

Synopsis: Rules for determining a unique tiling for a three-periodic net are presented

Online 17 August 2007

Acta Cryst. (2007). A63, 426-436  [ doi:10.1107/S0108767307039116 ]

Can the interaction density be measured? The example of the non-standard amino acid sarcosine

B. Dittrich and M. A. Spackman

Synopsis: Visualizing the crystal-field effect. A combined experimental and theoretical charge-density study on the non-standard amino acid sarcosine.

Online 17 August 2007

Acta Cryst. (2007). A63, 437-438  [ doi:10.1107/S0108767307032680 ]

Idler energy dependence of nonlinear diffraction in X X + EUV parametric down-conversion

K. Tamasaku and T. Ishikawa

Synopsis: The rocking curve of nonlinear X-ray diffraction in X X + EUV parametric down-conversion was found to depend strongly on the idler energy.

Online 17 August 2007

Acta Cryst. (2007). A63, 439-440  [ doi:10.1107/S0108767307019125 ]

Personal X-ray reflections

Online 17 August 2007