Cryst. Rev. (2010), 16(3), 197-230. Â Â [ doi:10.1080/08893110903483246 ]
X-ray single crystal structure analysis has become a gold standard for the determination of molecular geometry. The reliability of the technique is a triumph for science and technology working together. The uniqueness of well-crystalline material intrigued early natural philosophers, and their examinations, followed by the discovery … Read the rest
J. Appl. Cryst. (2010), 43, 1100-1107. Â Â [ doi:10.1107/S0021889810025598 ]
Because they scatter X-rays weakly, H atoms are often abused or neglected during structure refinement. The reasons why the H atoms should be included in the refinement and some of the consequences of mistreatment are discussed along with selected real examples demonstrating some of the … Read the rest
Dr David Watkin, an Honorary Member of the BCA, has been awarded the 2010 Fankuchen Award by the American Crystallographic Association. The award recognizes contributions to crystallographic research by one who is known to be an effective teacher of crystallography.
The Award will be presented at the ACA Annual Meeting in New Orleans 2011 at … Read the rest
Cryst. Rev. (2010), 16(2), 133-144. Â Â [ doi:10.1080/08893110903483238 ]
Recent developments in crystallographic error analysis are described. This report provides an introduction to more-formal work, originally published in Ref. (Haestier, J., J. Appl. Cryst. 2009, 42, 798). Prior to the main discussion, a brief overview of the normal distribution and error-propagation is … Read the rest
The final dinner of the British Crystallographic Association Spring Meeting in Warwick was interrupted, as always, with the prize winning awards. Amber Thompson was awarded the International Union of Crystallography Prize (a copy of International Tables) for her explanation of the advantages of choosing non-standard space groups. Kirsten Christensen was awarded the Durward Cruickshank … Read the rest
A dreary, grey, condemned, 1960s low-rise council flat is an unusual place to find one of the most beautiful pieces of crystallographic art in the UK. “Seizure” was constructed by transforming the flat into a watertight tank, into which 70,000 litres of hot copper sulphate solution was poured.  After three weeks of patient waiting, … Read the rest
Acta Cryst. (2009), C65, o635-o638. Â Â [ doi:10.1107/S0108270109046952 ]
The unusual methylene aziridine 6-tert-butyl-3-oxa-2-thia-1-azabicyclo[5.1.0]oct-6-ene 2,2-dioxide, C9H15NO3S, was found to crystallize with two molecules in the asymmetric unit. The structure was solved in both the approximately orthogonal and the oblique settings of space group No. 14, viz. … Read the rest
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
Acta Cryst. (2009), E65, o2904-o2905. Â Â [ 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:
… Read the rest
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