S. Dou, H. Fuess,, A. Weiss
1997
Citations
0
Influential Citations
0
Citations
Journal
Zeitschrift Fur Kristallographie
Abstract
The crystal structures of N-(4-methyl phenyl)-2,2,2-trichloroacetamide, C 9 H 8 Cl 3 NO (1), N-(2,3-dimethyl phenyl)-2,2,2-trichloroacetamide, C 10 H 10 Cl 3 NO (2) and N-(2-nitro phenyl)-2,2,2-trichloroacetamide, C 8 H 5 C 13 N 2 O 3 (3) have been determined at room temperature (1): P2 1 /c, a = 9.658(3) A, b = 20.243(5) A, c = 11.441(3) A, β = 103.0(1)°, Z = 8, (2): Pna2 1 , a = 19.233(5) A, b = 5.970(2) A, c = 20.805(5) A, Z = 8, (3): P1, a = 6.809(3) A, b = 12.717(6) A, c = 13.240(6) A, α = 98.67(2)°, β = 96.14(2)°, γ = 101.47(2)°. The phenyl rings as well as the acetamide group are planar. Their orientation suggests very little strain and hence little π-bonding. For (1) substitution by a methyl group at C(4) position in the phenyl ring results in a marked deviation in the C(3)-C(4)-C(5) angle from 120°.