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3-BROMO-1,1,1-TRIFLUORO-PROPANE-2-OXIME AND TRIETHYLPHOSPHITE

✍ Scribed by Hund, Heike; Röschenthaler, Gerd-Volker


Book ID
121275817
Publisher
Taylor and Francis Group
Year
1996
Tongue
English
Weight
205 KB
Volume
119
Category
Article
ISSN
1042-6507

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ÁBr À , is a salt comprising monoprotonated 2-bromo-1,3-dipyrrolidin-1-ylpropane-1,3-dione cations and bromide anions. In the cation, the acidic proton is intramolecularly hydrogen-bonded between the carbonyl O atoms and the positive charge is delocalized over both amide groups.

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In the title molecule, C 9 H 8 NO 2 Cl, the dihedral angle between the aromatic ring and propan-2-one oxime moiety is 54.05 (4) . In the crystal structure, the molecules exist as OÐHÁ Á ÁN hydrogen-bonded dimers around the inversion centres.

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In the title molecule, C~16~H~11~Br~3~Cl~2~O~2~, the chain Br atoms are in __trans__ positions [Br—C—C—Br torsion angle is 179.0 (2)°]. The two benzene rings make a dihedral angle of 39.54 (15)°. The crystal packing is determined by van der Waals forces; some weak π–π interactions between the benzen