In the title compound, C(10)H(9)FN(2)O(2), the dihedral angle between the hydantoin unit and the benzene ring is 65.55 (5)°. The atoms in the hydantoin ring are coplanar, with a mean deviation of 0.015 Å and a maximum deviation of 0.075 (2) Å for one carbonyl O atom. N-H⋯O hydrogen bonds link the mol-ecules into one-dimensional chains, with one carbonyl group acting as a bifurcated acceptor and...

In the crystal structure of the title compound, C(6)H(13)N(2)O(+)·C(7)H(4)NO(5) (-), the isonipecotamide cations and the 5-nitro-salicylate anions form hydrogen-bonded chain substructures through head-to-tail piperidinium-carboxyl-ate N-H⋯O hydrogen bonds and through centrosymmetric cyclic head-to-head amide-amide hydrogen-bonding associations [graph set R(2) (2)(8)]. These chains are cross-lin...

The mol-ecular conformation of the title compound, C11H15ClN2O3S, is stabilized by a C-H⋯O hydrogen bond, forming an S(6) ring motif. In the crystal, mol-ecules are linked by two pairs of inversion-related N-H⋯O hydrogen bonds, generating R2(2)(8) and R2(2)(20) ring motifs, resulting in chains running along [0-11]. These chains are connected by N-H⋯O hydrogen bonds along [100], forming layers p...