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14 citations found for Turner, A.
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short format (organic compounds)
organic compounds
There are two independent molecules of bis(17-oxoandrost-5-en-3β-yl) oxalate, [or bis(DHEA) oxalate], C40H54O6, in the asymmetric unit of the title compound. Molecules are held together by C—H
O hydrogen bonding. There is distortion in the central oxalate section of the molecules and a short intermolecular HH contact of 2.14 Å is present.
O hydrogen bonding. There is distortion in the central oxalate section of the molecules and a short intermolecular HH contact of 2.14 Å is present.research communicationsOpen 
access
access
The title symmetrical steroid oxalate diester is substantially twisted about the central O2C—CO2 bond, leading to an overall shallow V-shape for the molecule, which may correlate with its reactivity under flash vacuum pyrolysis. C—HO hydrogen bonds help to establish the packing.
O hydrogen bonds help to establish the packing.
abstracts
computer program abstracts
The program PDFgetX, for obtaining the PDF from X-ray powder diffraction data, is described.
research papers (metal-organic compounds)
research papers (metal-organic compounds)
abstracts
data reports
The title compound represents the first reported example of a [1,3]oxatellurole, prepared in three steps from 3,4-dimethylphenol. Both independent molecules are folded along their TeO axes, with an average angle φ = 25.1° between the Te–C–O planes and the remaining non-hydrogen atoms. A Hirshfeld plot indicates a weak intermolecular interaction between the two tellurium atoms in the asymmetric unit.
O axes, with an average angle φ = 25.1° between the Te–C–O planes and the remaining non-hydrogen atoms. A Hirshfeld plot indicates a weak intermolecular interaction between the two tellurium atoms in the asymmetric unit.organic compoundsOpen access
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The title compound, C18H20O, arose as an unexpected hydrogenation product. All its geometrical parameters are normal and the crystal packing is controlled by van der Waals forces.
organic compoundsOpen access
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The title compound, C20H20O5, possesses normal geometrical parameters. O—HO bonds and possible C—HO interactions are present.
O bonds and possible C—HO interactions are present.research papers
Experimental problems in the application of the Berg-Barrett Method to the observation of dislocations in metal single crystals are discussed. The problem of background noise caused by fluorescence from the specimen and inelastic scattering is considered. A criterion for selecting an appropriate filter to discriminate against the background noise is presented. The problem of multiple images is discussed and a scheme for selecting diffraction geometry to eliminate unwanted images is presented. A detailed description of the relatively simple equipment used in Berg-Barrett work is given.
research papers
short communications
S-adenosylhomocysteine hydrolase, a key enzyme involved in the regulation of transmethylation, has been crystallized. The tetrameric molecule exhibits 222 symmetry.
