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
J. Appl. Cryst. (2009), 42, 798-809. Â Â [ 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
Crystals version 12.87d is available for download. (June 2009).… Read the rest
Tet. Asym. (2009), 20, 712-717. Â Â [ 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
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 … Read the rest
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 community, principally as a result of … Read the rest
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. The presentation was made at the annual meeting of the BCA … Read the rest
Bob graduated from St Edmund Hall (Oxford) having completed his Part II year doing copper chemistry with Francis Rossotti. He worked for his D. Phil. (still on copper chemistry) with Keith Prout and Francis, and it was during this work that he became interested in crystallography.
For one of the materials he worked on, aquo(maleato)copper(II), … Read the rest
Acta Cryst. (2008), C64, o649-o652. Â Â [ doi:10.1107/S0108270108037086 ]
The absolute and relative configurations of 1-epialexine are established by X-ray crystallographic analysis, giving (1S,2R,3R,7S,7aS)-1,2,7-trihydroxy-3-(hydroxymethyl)pyrrolizidine. The compound crystallizes as the hemihydrate C8H15NO4·0.5H2O, with hydrogen bonds holding the … Read the rest
Chirality (2008), 20(7), 863-870. Â Â [ doi:10.1002/chir.20561 ]
3 alpha,12 alpha-Dihydroxy-5 beta-cholan-24-oic acid (deoxycholic acid DCA) is able to discriminate between the R- and S-enantiomers of camphorquinone and endo-(+)-3-bromocamphor and select only the S-enantiomers from a racemic mixture. DCA forms novel well ordered 1:l adducts with (1S)-(+)-camphorquinone and (1S)-endo-(-)-3-bromocamphor, both of which have been characterized … Read the rest
