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4-Methyl-N-(2-methyl-phen-yl)benzamide.

ABSTRACT: The asymmetric unit of the title compound, C(15)H(15)NO, contains two independent mol-ecules, which differ in the dihedral angle between the aromatic rings [48.98?(9) and 57.48?(8)°]. The methyl groups in para positions are disordered over two equally occupied positions. An intra-molecular N-H?O hydrogen bond occurs. The crystal structure is stabilized by inter-molecular N-H?O hydrogen bonds which link the mol-ecules into chains running along the b axis.

SUBMITTER: Rodrigues VZ

PROVIDER: S-EPMC3120561 | biostudies-literature | 2011 Jun

REPOSITORIES: biostudies-literature

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4-Methyl-N-(2-methyl-phen-yl)benzamide.

Rodrigues Vinola Z VZ Fronc Marek M Gowda B Thimme BT Kožíšek Jozef J

Acta crystallographica. Section E, Structure reports online 20110525 Pt 6

The asymmetric unit of the title compound, C(15)H(15)NO, contains two independent mol-ecules, which differ in the dihedral angle between the aromatic rings [48.98 (9) and 57.48 (8)°]. The methyl groups in para positions are disordered over two equally occupied positions. An intra-molecular N-H⋯O hydrogen bond occurs. The crystal structure is stabilized by inter-molecular N-H⋯O hydrogen bonds which link the mol-ecules into chains running along the b axis. ...[more]

PMID: 21754867

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Project description:In the title compound, C(20)H(18)N(2)O(3)S, the dihedral angle between the central benzene ring and the amide group is 24.1?(3)° and that between this ring and the aromatic ring of the tolyl group is 68.2?(16)°. In the crystal, adjacent mol-ecules are linked by N-H?O hydrogen bonds into a linear chain running along [100]. Weak C-H?O contacts also occur. Extensive weak ?-? inter-actions exist from both face-to-face and face-to-edge inter-actions occur between the aromatic rings [centroid-centroid distances = 3.612?(2) and 4.843?(2)?Å].

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2-Methyl-N-(4-methyl-phen-yl)benzamide.

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3-Methyl-N-(4-methyl-phen-yl)benzamide.

Project description:In the title compound, C(15)H(15)NO, the two aromatic rings make a dihedral angle of 70.06?(3)°, while the central amide core -NH-C(=O)- is twisted by 30.24?(4) and 40.16?(3)° out of the planes of the 3-methyphenyl and 4-methyphenyl rings, respectively. The methyl groups are disordered over two equally occupied positions. In the crystal, inter-molecular N-H?O hydrogen bonds link the mol-ecules into infinite chains running along the a axis.

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4-Methyl-N-(4-methyl-phen-yl)benzamide.

Project description:In the title compound, C(15)H(15)NO, the amide fragment has an anti conformation. The central amide group is tilted with respect to the benzoyl ring, forming a dihedral angle of 32.3?(5)°. The benzoyl and aniline rings make a dihedral angle of 59.6?(5)°. Mol-ecules are linked into infinite supra-molecular chains via N-H?O hydrogen bonds. The mol-ecule is disordered so that the aromatic rings are disposed across a twofold axis with equal occupancies.

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Project description:In the title compound, C(16)H(17)NO, the two aromatic rings make a dihedral angle of 5.9?(2)°, while the central amide core -NH-C(=O)- is twisted by 44.0?(3) and 47.1?(3)° out of the planes of the 2,3-dimethyl-phenyl and 2-methyl-phenyl rings, respectively. In the crystal, N-H?O hydrogen bonds link the mol-ecules into infinite chains running along the b axis.

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Project description:The conformation of the N-H bond in the structure of the title compound, C(14)H(12)ClNO, is anti to the meta-chloro substituent in the aniline ring, while the C=O bond is syn to the ortho-methyl substituent in the benzoyl ring. The conformations of the N-H and C=O bonds are anti to each other, similar to those observed in 2-methyl-N-(3-methyl-phen-yl)benzamide (N3MP2MBA). The -NHC(=O)- group makes a dihedral angle of 55.8?(7)° with the benzoyl ring, while the angle between the benzoyl and aniline rings is 37.5?(1)°; the respective values for N3MP2MBA are 55.2?(7) and 36.2?(1)°. N-H?O hydrogen bonds link the mol-ecules into infinite chains running along the c axis.

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