In the title compound, C(15)H(12)N(2)OS, the naphthalene ring system [maximum deviation = 0.026 (1) Å] forms a dihedral angle of 85.69 (6)° with the thia-zole ring [maximum deviation = 0.010 (1) Å]. In the crystal, inversion dimers linked by pairs of N-H⋯N hydrogen bonds generate R(2) (2)(8) loops. The dimers are linked by C-H⋯O hydrogen bonds into chains propagating along [110].

In the title compound, C(14)H(13)NO(4)S, the thia-zolidine ring is essentially planar [maximum deviation = 0.010 (2) Å for the carbonyl C atom between the N and S atoms] and is oriented at a dihedral angle of 60.1 (1)° with respect to the benzene ring. In the crystal, mol-ecules are linked into zigzag chains running along the c axis by C-H⋯O hydrogen bonds. The crystal packing is further stabil...

The title pesticide, C(17)H(21)ClN(2)O(2)S, has a trans arrangement of the 4-chloro-phenyl and 4-methyl substituents of the thia-zolidine ring; the structure features an intra-molecular amide-ring carbonyl N-H⋯O hydrogen bond. The thia-zolidine ring is almost planar, the largest deviation being 0.199 (1) Å for the methyl-substitued C atom, and the cyclohexane ring has a chair conformation.

In the title compound, [ZnCl(2)(C(9)H(17)N(3)S)(2)], the Zn(II) atom is four-coordinated by two N atoms from two 5-heptyl-1,3,4-thia-diazol-2-amine ligands and two Cl atoms in a distorted tetra-hedral geometry. The thia-diazole rings are oriented at a dihedral angle of 84.87 (4)°. Intra-molecular N-H⋯Cl inter-actions result in the formation of two six-membered rings having envelope and planar c...

The title compounds, 6-(2-hy-droxy-benz-yl)-5H-thia-zolo[3,2-a]pyrimidin-5-one, C13H8N2O3S, (1), and 6-(2-hy-droxy-benz-yl)-3-methyl-5H-thia-zolo[3,2-a]pyrimidin-5-one, C14H10N2O3S, (2), were synthesized when a chromone-3-carb-oxy-lic acid, activated with (benzotriazol-1-yl-oxy)tripyrrolidinyl-phospho-nium hexa-fluorido-phosphate (PyBOP), was reacted with a primary heteromamine. Instead of the ...

The mononuclear title complex, [Cu(SCN)2(C12H8N4S)2], was obtained by the reaction of 2,5-bis-(pyridin-2-yl)-1,3,4-thia-diazole and potassium thio-cyanate with copper(II) chloride dihydrate. The copper cation lies on an inversion centre and displays an elongated octa-hedral coordination geometry. The equatorial positions are occupied by the N atoms of two 2,5-bis-(pyridin-2-yl)-1,3,4-thia-diazo...

In the title compound, C14H19BrN2O2S, the 1,2,4-thia-diazinane ring adopts an envelope conformation with the N atom (attached to the sulfonyl group) as the flap, while the cyclo-hexane ring adopts a chair conformation. The mean plane of the cyclo-hexane ring is almost normal to the benzene ring and the mean plane of the 1,2,4-thia-diazinane ring, making dihedral angles of 70.4 (2) and 71.43 (19...

Estimating surface runoff for ungauged watershed is an important issue. The Soil Conservation Service Curve Number (SCS-CN) method developed from long-term experimental data is widely used to estimate surface runoff from gaged or ungauged watersheds. Many modelers have used the documented SCS-CN parameters without calibration, sometimes resulting in significant errors in estimating surface runo...

In the title compound, C(16)H(16)N(2)O(3)S·C(5)H(5)N, the benzene and thia-zole rings of the Febuxostat [2-(3-cyano-4-isobut-yloxy)phenyl-4-methyl-5-thia-zolecarboxylic acid] mol-ecule are almost coplanar [dihedral angle = 2.4 (1)°]. The carboxyl group is coplanar with the thia-zole ring [O-C-C-C and O-C-C-S torsion angles of -0.7 (4) and 0.6 (3)°, respectively]. The pyridine mol-ecule of cryst...