In the title salt, C(6)H(10)N(3)O(+)·C(6)H(2)N(3)O(7) (-), the dihedral angle between the mean planes of the benzene and pyridine rings is 3.1 (1)°. In the cation, the meth-oxy group is almost coplanar with the pyridine ring [C-O-C-N = -0.6 (2)°]. The p-nitro [C-C-N-O = -1.17 (19)°] and one o-nitro [C-C-N-O = 1.83 (19)°] group in the anion are essentially coplanar with the benzene ring. The oth...

Co-crystallization of 2-amino-6-methyl-1,3--benzothia-zole with deca-nedioic acid under hydro-thermal conditions afforded the title 2:1 co-crystal, 2C(8)H(8)N(2)S·C(10)H(18)O(4). The deca-nedioic acid mol-ecule is located on an inversion centre. In the crystal, inter-molecular N-H⋯O and O-H⋯O hydrogen bonds connect the components into a two-dimensional wave-like layer structure extending parall...

In the cation of the title salt, C(11)H(12)IN(4) (+)·Cl(-), the two aromatic rings are oriented to each other at 9.3 (2)°. In the crystal, the two independent Cl(-) anions lie on twofold rotation axes. N-H⋯Cl hydrogen bonds between the cations and anions generate a supra-molecular layer parallel to (010).

In the title compound, C(10)H(12)N(2)S, one of the C atoms of the cyclo-hexene ring (at position 6) and the methyl group attached to it are disordered over two sets of sites in a 0.650 (3):0.350 (3) ratio. The cyclo-hexene ring in both the major and minor occupancy conformers adopts a half-chair conformation. The thio-phene ring is essentially planar (r.m.s. deviation = 0.05 Å). In the crystal,...

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.

The asymmetric unit of the title salt, C10H11N2 (+)·C4H5O4 (-), consists of two independent 5-amino-6-methyl-quinolin-1-ium cations and two 3-carb-oxy-propano-ate anions. Both cations are protonated at the pyridine N atoms and are essentially planar, with maximum deviations of 0.026 (3) and 0.016 (2) Å. In the crystal, the cations and anions are linked via N-H⋯O and O-H⋯O hydrogen bonds, formin...

Cocrystallization of 2-amino-6-methy-1,3-benzothia-zole with octa-nedioic acid in a mixed methanol-water medium afforded the title 2:1 cocrystal, 2C(8)H(8)N(2)S·C(8)H(14)O(4). The octa-nedioic acid mol-ecule is located on an inversion centre. In the crystal, inter-molecular N-H⋯O and O-H⋯O hydrogen bonds connect the components into a three-dimensional network.

In this research, we synthesized oxazine and thiazine derivatives (3-6). These of chacone compounds (1 2) that from 4- hydroxyacetophenone aldehyde such as, 4-bromobenzaldehyde chlorobenzaldehyde. chalcone (1-2) reacted with urea to produce as 4-[4-amino-6-(4-subsutitedphenyl)-2H-1,3-oxazin-2-yl] phenol (3 4) thiourea 4-[4-amino-6-(4-subsutitedphenyl)-2H-1,3-thiazin-2-yl] (5 6). were characteri...