Oct 302009
Synthesis and Structural Studies of Gallium(III) and Indium(III) Complexes of 2-acetylpyridine Thiosemicarbazones (J. Chan, A. L. Thompson, M. W. Jones, J. M. Peach)

Inorg. Chim. Acta  (2010), 363(6), 1140-1149.    [ doi:10.1016/j.ica.2009.10.020 ]

Four 2-acetylpyridine 4N-alkyl thiosemicarbazones, and their Ga(III) and In(III) complexes have been prepared and characterised by fluorescence, UV–Vis, IR, 1H and 13C NMR spectroscopy, mass spectrometry and X-ray crystallographic analysis. Comparison of the crystal structures gave an insight into the nature of … Read the rest

Oct 222009

Acta Cryst. (2009), E65, o2904-o2905.    [ doi:10.1107/S1600536809043827 ]

X-ray crystallographic analysis of the title hydrobromide salt, C10H20N+Br-, of (1R,2S,3R,5R,8aR)-3-hydroxymethyl-5- methyloctahydroindolizine-1,2-diol defines the absolute and relative stereochemistry at the five chiral centres in steviamine, a new class of polyhydroxylated indolizidine alkaloid isolated from Stevia rebaudiana (Asteraceae) leaves.

Electronic reprint:

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Oct 072009
Nobel prize for Chemistry 2009 – The Structure of Ribosomes

The Nobel prize for chemistry has been jointly awarded to Venkatraman Ramakrishnan (MRC Cambridge), Thomas Steitz (Yale) and Ada Yonath (Weizmann Institute, Israel) for their work determining the structure of ribosomes.  The ribosome is an important component of cells that assembles proteins from amino acids.  It is often referred to as “the protein factory”.  This … Read the rest

Aug 212009

The 25th European Crystallographic Meeting was held in the Harbiye Museum and Cultural Centre in the beautiful city of Istanbul.  It was a very eventful week, and contributions to the conference made by Chem. Cryst. include:

N. David Brown, James Haestier, Mustapha Sadki, Amber L. Thompson & David J. Watkin
A Further Improved Structure Matching Read the rest

Aug 012009

J. Appl. Cryst. (2009), 42, 798-809.    [ doi:10.1107/S0021889809024376 ]

A new method is presented for handling errors on crystallographic data. In single-crystal diffraction experiments, two variance-covariance matrices are present, one for the cell parameters and the second for the refined parameters (atomic coordinates and anisotropic displacement parameters). These two matrices can be combined so … Read the rest

May 072009
X-ray Crystallography and Chirality: Understanding the Limitations (A. L. Thompson & D. J. Watkin)

Tet. Asym. (2009), 20, 712-717.    [ doi:10.1016/j.tetasy.2009.02.025 ]

Advances in hardware and software have made X-ray crystallography even more attractive as the first-option method for structure analysis. For most organic materials containing up to 100 non-hydrogen atoms, getting from the initial visual examination of the sample to producing publication-ready tables and pictures should usually … Read the rest

Apr 212009

The 2009 British Crystallographic Association Spring Meeting was held at the University of Loughborough.  Contributions from Chem. Cryst. included:

N. David Brown, James Haestier, Mustapha Sadki, David J. Watkin & Amber L. Thompson
A Further Improved Structure Matching Algorithm (Poster)

James Haestier
Effects of Cell Errors on Derived Parameters
(YC Presentation)

James Haestier
Computation of
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Apr 012009
David Watkin gives the Kathleen Lonsdale Lecture

David Watkin gives the Lonsdale Lecture

Every two years, the Young Crystallographers Group of the British Crystallographic Association nominate a speaker to give the prestigious Kathleen Lonsdale Lecture. Traditionally, they invite well respected scientist who has a good rapport with students. This year the Lonsdale Lecturer was David Watkin who is well known within the … Read the rest

Apr 012009
BCA Award for David Watkin

Presentation to mark David Watkin becoming Honorary Member of the BCA

David Watkin has been elected as Honorary Member of the British Crystallographic Association for his outstanding services to the organisation and crystallography as a whole. The award was made in particular recognition of his role as a teacher, in both the UK and worldwide. … Read the rest