issue contents

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296

September 1995 issue

Highlighted illustration

Cover illustration: Two New Scandium Phases: ScSn2 and Sc6Pb5, see Pani, Manfrinetti & Fornasini, pages 1725-1728. Projection of the structures of ScSn2 and ZrSi2 along [100] (left) and Sc tetragonal antiprisms centred by Pb atoms and Pb octahedra centred by Sc atoms in the structure of Sc6Pb5 (right).

inorganic compounds


link to html
The structure of Cs6[Mo7O24].7H2O contains 9- 10- and 11-coordinate Cs+ cations bound to terminal, doubly bridging and quadruply bridging O atoms of the polyanions, as well as to water molecules.

link to html
Substitution of 2Ti4+ in the structure of KTiOPO4 (KTP) by Ni2+ and W6+ leads to the new non-centrosymmetric compound K2NiWO2(PO4)2 (KNiWP). The structures of KTP and KNiWP are closely related.

link to html
The crystal structure of CsNbOB2O5 represents the basic structure type of the borate family AMOB2O5 with A = K, Rb, Cs, Tl and M = Nb, Ta. The structure contains untilted chains of [NbO6] octahedra linked by planar [B2O5] groups. Cs is coordinated irregularly by eight O atoms.

link to html
The structure of SrTa4O11 contains layers of TaO7 pentagonal bipyramids sharing edges, as found in U3O8. Between the layers lie Sr atoms with distorted cubic coordination geometry and Ta atoms with distorted octahedral coordination geometry.

link to html
The structure of ScSn2 is related to the ZrSi2 structure type and contains slabs of Sc trigonal prisms centred by Sn. Sc6Pb5, isotypic with Ti6Ge5, is characterized by infinite columns of Sc tetragonal antiprisms centred by Pb and by infinite columns of Pb octahedra centred by Sc atoms.

link to html
The outstanding features of this new vierer single-chain silicate are the large stretching factor of the silicate chain of fs = 96.8%, a very small Si-O-Si angle of 118.3° and the presence of three-membered rings formed from two [SiO4] and one [ZnO4] tetrahedra.

link to html
Pb5Al3F19 undergoes three phase transitions between 80 and 400K. The structure at 370K contains corner-sharing AlF6 octahedra and individual AlF6 octahedra. The Pb atoms occupy tunnels of 2.5Å radii.

link to html
The cage compound Cl8Si8O12 shows a close structural resemblance to the compound (CH3)8Si8O12. As a result of interelectronic repulsion and the considerable electronegativity of the Cl substituent, distortions of the tetrahedral Si environment and a shortening of the Si-O bond occur.

link to html
Li1.14Nb0.93Sc0.67Cr0.40P3O12 is the first example of a Nasicon-type compound containing a pentavalent cation. The [M2(PO4)3] framework contains double [M(1)M(2)P3O18] units which share apical O atoms to form a three-dimensional network.

link to html
The structure of Pb(HSeO3)2 consists of layers of Pb-O polyhedra and selenite groups. The coordination polyhedron of Pb is a square antiprism.

link to html
Analysis of previously published diffraction data shows that Cu(AlCl4)2 is monoclinic. Refinement on this basis gives an improved R factor. The changes in the structure are small.

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?

Follow Acta Cryst. C
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds