Crystal structure of 4,6-diamino-2- sulfanylidene-1,2-dihydropyridine-3- carbonitrile

The title compound, C 6 H 6 N 4 S, crystallizes with two independent molecules, A and B, in the asymmetric unit. Both independent molecules are almost planar [maximum deviations of 0.068 (6) Å in molecule A and 0.079 (6) Å in molecule B]. In the crystal, molecules A and B are linked by N-HÁ Á ÁS, N-HÁ Á ÁN and C-HÁ Á ÁS hydrogen bonds, forming a threedimensional network

Crystal structure of 4,6-diamino-2-sulfanylidene-1,2-dihydropyridine-3-carbo-nitrile

The title compound, C6H6N4S, crystallizes with two independent molecules, A and B, in the asymmetric unit. Both independent molecules are almost planar [maximum deviations of 0.068 (6) angstrom in molecule A and 0.079 (6) angstrom in molecule B]. In the crystal, molecules A and B are linked by N-H center dot center dot center dot S, N-H center dot center dot center dot N and C-H center dot center dot center dot S hydrogen bonds, forming a three-dimensional network

Ethyl 2-[({[4-amino-5-cyano-6-(methylsulfanyl)pyridin-2-yl]carbamoyl} methyl)sulfanyl]acetate monohydrate

The title compound, C13H16N4O3S2 center dot H2O, crystallizes in a 'folded' conformation with the ester group lying over the carbamoyl moiety, with one solvent water molecule. The molecular conformation is stabilized by an intramolecular C-H center dot center dot center dot O hydrogen bond, and an N-H center dot center dot center dot O hydrogen-bonding interaction involving the lattice water molecule. The packing involves N-H center dot center dot center dot N, N-H center dot center dot center dot O, O-H center dot center dot center dot N and O-H center dot center dot center dot O hydrogen bonds and consists of tilted layers running approximately parallel to the c axis, with the ester groups on the outer sides of the layers and with channels running parallel to (101)

3,4,6-Triamino-N-phenylthieno[2,3-b]pyridine-2-carboxamide

In the title compound, C14H13N5OS, the dihedral angle between the fused ring system (r.m.s. deviation = 0.028 Å) and the phenyl ring is 48.24 (4)°. The molecule features both an intramolecular N—H...O and an N—H...N hydrogen bond. In the crystal, molecules are linked by N—H...O and N—H...N hydrogen bonds, generating a three-dimensional network. A weak N—H...π interaction is also observed

Crystal structure of N-[4-amino-5-cyano-6-(methylsulfanyl)pyridin-2-yl]-2-chloroacetamide

In the title compound, C9H9ClN4OS, the dihedral angle between the acetamide moiety and the pyridine ring is 4.83 (12)degrees. TheO C-C-Cl torsion angle is 46.4 (3)degrees and an intramolecular C-H center dot center dot center dot O interaction generates an S(6) ring. In the crystal, molecules are linked by N-H center dot center dot center dot O, N-H center dot center dot center dot N and C-H center dot center dot center dot N hydrogen bonds, generating sheets lying parallel to (120)

Crystal structure of 4,6-diamino-2-(methylsulfanyl)pyridine-3-carbonitrile

The title pyrimidine derivative, C7H8N4S, is essentially planar, with a maximum deviation of 0.029 (2) angstrom from the mean plane of the non-H atoms. In the crystal, molecules are linked by an intermolecular bifurcated N-H center dot center dot center dot N hydrogen bond between the cyano N atom and the two amino groups, an N-H center dot center dot center dot N hydrogen bond between the two amino groups and a weak C-H center dot center dot center dot pi interaction, forming a three-dimensional network

Crystal structure of N-[4-amino-5-cyano-6-(methylsulfanyl)pyridin-2-yl]-2-(cyclohexylsulfanyl)acetamide

In the title molecule, C15H20N4OS2, the acetamido fragment is nearly coplanar with the pyridyl ring [C—N—C—C torsion angle = −4.1 (2)°], while the cyclohexylsulfanyl portion protrudes from this plane [N—C—C—S torsion angle = −40.8 (6)°]. In the crystal, alternating pairwise N—H...O and N—H...N hydrogen bonds across inversion centres form chains along [101], which are associated into stepped layers via offset π–π stacking between pyridyl rings [centroid–centroid distance = 3.566 (1) Å]. The cyclohexyl group and the two atoms of the S—C bond attached to it are disordered over two sets of sites with site-occupancy factors of 0.8845 (18) and 0.1155 (18)

Crystal structure of N-[4-amino-5-cyano-6-(methylsulfanyl)pyridin-2-yl]acetamide hemihydrate

The title compound, C9H10N4OS center dot 0.5H(2)O, crystallizes with two independent molecules (A and B) in the asymmetric unit, together with a water molecule of crystallization. The acetamide moiety, which has an extended conformation, is inclined to the pyridine ring by 7.95 (16)degrees in molecule A and by 1.77 (16)degrees in molecule B. In the crystal, the A and B molecules are linked by two N-H center dot center dot center dot O-carbonyl hydrogen bonds, forming a dimer. The dimers are linked via N-H center dot center dot center dot N hydrogen bonds, forming ribbons that are linked by N-H center dot center dot center dot O-water hydrogen bonds to form sheets parallel to (110). The sheets are linked by O-H center dot center dot center dot N hydrogen bonds, forming slabs, and between the slabs there are weak slipped parallel pi-pi interactions [inter-centroid distance = 3.734 (2) angstrom, interplanar distance = 3.3505 (11) angstrom and slippage = 1.648 angstrom], forming a three-dimensional structure