Research Article: (Z)-N′-Hy­droxy-4-(trifluoro­meth­yl)benzimidamide

Date Published: April 01, 2011

Publisher: International Union of Crystallography

Author(s): Fei Liu, Fang Zhang, Qifan Chen, Mingdong Dong.


In the title compound, C8H7F3N2O, the OH and NH2 substituents adopt a Z configuration with respect to the C=N bond. The hy­droxy­imidamide unit is almost planar (r.m.s. deviation = 0.007 Å) and subtends an angle of 26.25 (13)° with the benzene ring. The F atoms of the trifluoro­methyl substituent are disordered over two sets of sites with an occupancy ratio of 0.783 (15):0.217 (15). In the crystal, O—H⋯N hydrogen bonds form centrosymmetric dimers. Additional N—H⋯O hydrogen bonds link the dimers into zigzag chains along the b axis. Weak inter­molecular F⋯F contacts of 2.714 (5) Å are also observed.

Partial Text

For the preparation of the title compound, see: Rai et al. (2010 ▶). For the use of oxime derivatives in crystal engineering, see: Aakeröy et al. (2000 ▶). For a related structure, see: Orama & Saarinen (1996 ▶).




0 0 vote
Article Rating
Notify of
Inline Feedbacks
View all comments