N-Butyl-4-chloro-benzamide

John JP, Butcher RJ, Narayana B, Yathirajan HS, Sarojini BK. 4-Hy-droxy-N-methyl-benzamide

Three independent mol-ecules comprise the asymmetric unit of the title compound, C8H9NO2, in which the dihedral angles between the amide group and the benzene ring are 3.0 (2), 4.0 (3) and 3.3 (9)°. In the crystal, O-H⋯O hydrogen bonds and weak C-H⋯N inter-actions are observed, forming infinite chains along [101].

4-Chloro-N-m-tolylbenzamide

In the title compound, C₁₄H₁₂ClNO, the dihedral angle between the two aromatic rings is 11.29 (15)°. The crystal packing is stabilized by N—H⋯O hydrogen bonds linking the mol­ecules into chains running along the c axis.

N-(3,4-Diethoxy-phen-yl)acetamide

In the title compound, C(12)H(17)NO(3), the conformations of the N-H and C=O bonds are anti to each other. In the crystal structure, N-H⋯O hydrogen-bond inter-actions help to establish the packing.

2-Fluoro-N-(4-methoxy-phen-yl)benzamide

In the title compound, C₁₄H₁₂FNO₂, the fluoro­benzene and methoxy­benzene rings are inclined at 27.06 (7) and 23.86 (7)°, respectively, to the amide portion of the mol­ecule and at 3.46 (9)° to one another. The meth­oxy substituent lies close to the methoxy­benzene ring plane, with a maximum deviation of 0.152 (3) Å for the methyl C atom. In the crystal structure, inter­molecular N—H⋯O hydrogen bonds link mol­ecules into rows along a. Weak C—H⋯O and C—H⋯F inter­actions further stabilize the packing, forming corrugated sheets in the bc plane.