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Your search keyword '"Abedawn I. Khalaf"' showing total 3 results
Start Over Author "Abedawn I. Khalaf" Journal acta crystallographica section c crystal structure communications
3 results on '"Abedawn I. Khalaf"'

1. 2,8-Dimethylphenoxathiin 10-Oxide

Author

S. R. Bennett, Roger D. Waigh, Abedawn I. Khalaf, and Alan R. Kennedy

Subjects
chemistry.chemical_compound, Crystallography, Chemistry, Stereochemistry, Oxide, Molecule, Aromaticity, General Medicine, Crystal structure, Dihedral angle, Ring (chemistry), General Biochemistry, Genetics and Molecular Biology
Abstract

An important precursor to biologically active compounds, 2,8-dimethylphenoxathiin 10-oxide (C14H12-028), is found to adopt a folded geometry. The dihedral angles between the aromatic rings are 11.8 (2) and 15.4 (2) ° for the two independent molecules, with the S atoms lying out of the ring planes.

Published
1998
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2. N,N-Diacetyl-2,5-dimethyl-6-nitroaniline

Author

Alan R. Kennedy and Abedawn I. Khalaf

Subjects
Stereochemistry, Aryl, General Medicine, Crystal structure, Ring (chemistry), Diacetyl, Medicinal chemistry, General Biochemistry, Genetics and Molecular Biology, Nitroaniline, chemistry.chemical_compound, chemistry, Molecule, Moiety, Imide
Abstract

The diacetylamino moiety of the title compound, C12H14N2O4, is shown to adopt a syn–anti conformation and is twisted away from the perpendicular to the aryl ring.

Published
1997
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3. Methyl 2-amino-4-(methoxymethyl)thiazole-5-carboxylate

Author

Colin J. Suckling, Abedawn I. Khalaf, John Urwin, Andrew P. Pitt, Martin Scobie, Stephen Young, Roger D. Waigh, and Alan R. Kennedy

Subjects
Crystallography, chemistry.chemical_compound, chemistry, Hydrogen bond, Stereochemistry, Amine gas treating, General Medicine, Carboxylate, Crystal structure, Thiazole, General Biochemistry, Genetics and Molecular Biology
Abstract

The synthesis and structure of 2-amino-4-(methoxymethyl)-thiazole-5-carboxylic acid Me ester (C7H10N2O3S) are reported. Crystallog. data and at. coordinates are given. The two crystallog. independent conformations found differ only by the rotational positions adopted by their methoxymethyl substituents. Intermol. contacts are dominated by H bonding involving the amine H atoms.

Published
1999
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