Crystal structures of N-4-methyl phenyl)-2,2,2-trichloroacetamide, N-2,3-dimethyl phenyl)-2,2,2-trichloroacetamide and N-(2-nitro phenyl)-2,2,2-trichloroacetamide
Abstract
The crystal structures of N-(4-methyl phenyl)-2,2,2-trichloroacetamide, C9H8Cl3NO (1), N-(2,3-dimethyl phenyl)-2,2,2-trichloroacetamide, C10H10Cl3NO (2) and N-(2-nitro phenyl)-2,2,2-trichloroacetamide, C8H5Cl3N2O3 (3) have been determined at room temperature (1): P21/c, a = 9.658(3) Å, b = 20.243(5) Å, c = 11.441(3) Å, β = 103.0(1)°, Z = 8, (2): Pna21a = 19.233(5) Å, b = 5.970(2) Å, c = 20.805(5) Å, Z = 8, (3): P[unk], a = 6.809(3) Å, b = 12.717(6) Å, c = 13.240(6) Å, 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°.
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Articles in the same Issue
- Icosahedral coincidence rotations
- Localization and integration of diffraction spots from two-dimensional X-ray detector images by digital filtering
- Finite periodicity and crystal structures
- Structure determination from powder data using anomalous scattering: difference and partial, Patterson densities, and phases of structure factors
- Phase transitions of modulated Co-åkermanite, Ca2CoSi2O7
- Preparation and single crystal structure refinement of mixed orthophosphates M3Cr4(PO4)6 (M = Mg, Zn, Cu) – copper(II) in compressed octahedral coordination1
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- One-dimensional staircase aggregates in crystals of 1,7-bis(dimethylamino)heptamethinium hexafluorophosphate, a polymethine dye
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