2-Amino-6-(naphthalen-1-yl)-4-phenyl-pyridine-3-carbonitrile.

In the title compound, C(22)H(15)N(3), the naphthyl ring system makes dihedral angles of 67.40 (2) and 59.80 (3)° with the pyridyl and phenyl rings, respectively. In the crystal, the mol-ecules are connected via inter-molecular N-H⋯N hydrogen bonds, forming a three-dimensional network.

5-(4-Methyl-piperazin-1-yl)-2-nitro-aniline.

In the title compound, C(11)H(16)N(4)O(2), the dihedral angle between the benzene ring and the plane of the four carbon atoms in the piperazine ring is 12.17 (3)°; the latter ring adopts a chair conformation. An intramolecular N-H⋯O hydrogen bond generates an S(6) ring. In the crystal, the molecules are linked by N-H⋯N hydrogen bonds, forming chains.

2-Amino-4-(2-fluoro-phen-yl)-5,6-dihydro-benzo[h]quinoline-3-carbonitrile.

In the title compound, C(20)H(14)FN(3), the F atom of the fluoro-substituted benzene ring in the 4-position of the 5,6-dihydro-benzo[h]quinoline system is disordered over two positions (0.80 and 0.20 occupancy). The dihedral angle between the pyridine and fluorobenzene rings is 73.2 (2) Å. The crystal structure is established by inter-molecular N-H⋯N hydrogen bonds, forming a three-dimensional network.

Poly[di-µ(2)-chlorido-µ(2)-(1,4-dioxane-κO:O')-cadmium(II)].

In the title complex, [CdCl(2)(C(4)H(8)O(2))](n), two different Cd(II) ions are present, one in a general position and one with site symmetry 2. The Cd(II) ions are coordinated by two O atoms from two 1,4-dioxane ligands and four chloride anions in a slightly distorted octa-hedral geometry and is connected to neighboring Cd(II) ions by two bridging chloride anions, generating infinite linear chains along the a axis. These chains are further inter-connected by bridging 1,4-dioxane ligands, affording a three-dimensional network.

2-Methyl-sulfanyl-4-(3-pyrid-yl)pyrimidine.

In the title compound, C(10)H(9)N(3)S, the dihedral angle between the aromatic rings is 8.09 (14)°. In the crystal, a C-H⋯N interaction links the molecules, forming chains.

4-Bromo-2-(4-fluoro-benzyl-idene)indan-1-one.

In the mol-ecule of the title compound, C(16)H(10)BrFO, the indane ring system is planar with a maximum deviation of 0.020 (3) Å. An intra-molecular C-H⋯O inter-action results in the formation of a planar ring, which is oriented at dihedral angles of 2.24 (3) and 2.34 (3)° with respect to the adjacent rings. π-π contacts between the benzene and indane rings [centroid-centroid distances = 3.699 (1) and 3.786 (1)Å] may stabilize the crystal structure.