In the title compound, C17H21N5S2, the dihedral angles between the central pyridine ring and its pendant imidazole rings are 29.40 (9) and 40.77 (9)°; the pendant rings are twisted in an opposite sense with respect to the central ring. In each case, the S atom is approximately anti to the N atom of the pyridine ring. For both substituents, the H atom attached to the central C atom of the isopro...

In the title compound, C(12)H(12)N(4)O, the pyridine and pyrrole rings are inclined at an angle of 29.22 (8)° and an intra-molecular C-H⋯N inter-action geneates an S(6) ring. In the crystal, mol-ecules are linked by N-H⋯N hydrogen bonds, forming (010) C(7) chains. The chains are cross-linked by weak C-H⋯O inter-actions, which generate R(2) (2)(18) ring motifs within an infinite sheet. Finally, ...

The title mol-ecule (alternative name: pyridine-3-carbohydrazide; C(6)H(7)N(3)O) was obtained from the reaction of ethyl nicotinate with hydrazine hydrate in methanol. In the amide group, the C-N bond is relatively short, suggesting some degree of electronic delocalization in the mol-ecule. The stabilized conformation may be compared with those of isomeric compounds picolinohydrazide (pyridine-...

The asymmetric unit of the title compound, C(5)H(5)ClN(2)·0.5C(4)H(4)O(4), comprises a neutral 2-amino-5-chloro-pyridine mol-ecule and one half of a fumaric acid mol-ecule which lies on an inversion center. The dihedral angle between the pyridine ring and the plane formed by the fumaric acid mol-ecule is 3.22 (8)°. The 2-amino-5-chloro-pyridine mol-ecule is planar, with a maximum deviation of 0...

In the title mol-ecule, C(18)H(16)F(3)N(5)O(2), the dihedral angle between the pyridine ring and the fused benzene ring is 4.50 (10)°. The triazole ring makes dihedral angles of 54.48 (12) and 57.91 (11)° with the pyridine and benzene rings, respectively. The morpholine ring atoms are disordered over two positions; the site-occupancy factors are ca 0.53 and 0.47. Inter-molecular C-H⋯F hydrogen ...

The title compound, C(9)H(11)NOS, exhibits a unique structural motif, with free rotation of the aliphatic oxathiane ring about the C-C bond connecting this moiety to the aromatic pyridine ring. The structure elucidation was undertaken due to its potential as a bidentate ligand for organometallic complexes. The oxathiane ring adopts the expected chair conformation, with the S atom in proximity t...

There are two crystallographically independent mol-ecules in the asymmetric unit of the title compound, C(22)H(17)BrN(6). The dihedral angles between the imidazo[4,5-b]pyridine mean plane and the phenyl rings are 20.4 (2) and 24.0 (2)° in the two mol-ecules. The orientation of triazoles compared to the imidazo[4,5-b]pyridine system is almost the same in both mol-ecules, with dihedral angles of ...

In the title compound, C(21)H(21)N(3)O(2), the pyridine rings and the benzene ring lie in a propeller arrangement around the central tertiary amine N atom. The dihedral angles formed by the benzene ring with the pyridine rings are 61.0 (3) and 49.6 (3)°, while the dihedral angle between the pyridine rings is 69.7 (3)°. The mol-ecular conformation is stabilized by intramolecular bifurcated O-H⋯N...

In the title compound, C(23)H(17)N(5)·H(2)O, the pyrazole rings are slightly twisted from the central pyridine ring, forming dihedral angles of 5.3 (2) and 3.5 (2)°. The pyrazole and phenyl rings on each side of the pyridine ring are also approximately coplanar, making dihedral angles of 6.0 (2) and 4.5 (2)°. In the crystal structure, 2,6-bis-(3-phenyl-1H-pyrazol-5-yl)pyridine and water mol-ecu...

In the crystal structure of the title compound, C(28)H(29)FN(4)O(2)S, the imidazole ring makes dihedral angles of 11.85 (7), 73.33 (7) and 22.83 (8)° with the 4-fluoro-phenyl, pyridine and phenyl rings, respectively. The 4-fluoro-phenyl ring makes dihedral angles of 77.91 (7) and 26.93 (8)° with the pyridine and phenyl rings, respectively. The phenyl and pyridine rings are nearly perpendicular,...