RESUMEN
The title compound, C(20)H(25)NO(4), was synthesized by a Mitsunobu reaction of sinomenine [(9S,13R,14R)-7,8-didehydro-4-hydroxy-3,7-dimethoxy-17-methylmorphinan-6-one] with methanol. The chiral centers were unchanged during the reaction. Intra-molecular C-Hâ¯O hydrogen bonds result in the formation of six-membered rings.
RESUMEN
The title compound, C(20)H(22)Cl(2)N(3)O(4)PS, was synthesized by the reaction of N-(4-methoxy-benzyl-idene)-5-(2,4-dichloro-phenyl)-1,3,4-thia-diazol-2-amine and diethyl phosphite. In the crystal, inter-molecular C-Hâ¯O and N-Hâ¯O hydrogen bonds link the mol-ecules.
RESUMEN
In the title compound, C(8)H(6)BrN(3)S, the thia-diazole ring is oriented at a dihedral angle of 48.35â (3)° with respect to the bromo-phenyl ring. In the crystal structure, inter-molecular N-Hâ¯N hydrogen bonds link the mol-ecules.
RESUMEN
The title compound, C(32)H(56)N(2), was synthesized by the reaction of terephthalaldehyde and dodecan-1-amine. The imines adopt trans conformations, with the two halves of the mol-ecule related to each other by a centre of symmetry.
RESUMEN
In the mol-ecule of the title compound, [ZnCl(2)(C(9)H(9)N(3)S)(2)], the Zn(II) atom is four-coordinated by two N atoms from two 5-m-tolyl-1,3,4-thia-diazol-2-ylamine ligands and two Cl anions in a distorted tetra-hedral geometry. Intra-molecular N-Hâ¯N, N-Hâ¯Cl and C-Hâ¯S hydrogen bonds result in the formation of one planar and one non-planar five-membered, one non-planar six-membered and one non-planar seven-membered ring. The six- and seven-membered rings have twist conformations, while the non-planar five-membered ring adopts an envelope conformation with the S atom displaced by 0.541â (3)â Å from the plane of the other ring atoms. The planar five-membered ring is oriented at dihedral angles of 1.74â (3) and 1.08â (3)°, respectively, with respect to the adjacent aromatic and thia-diazole rings. In the crystal structure, inter-molecular N-Hâ¯Cl hydrogen bonds link the mol-ecules into a three-dimensional network.
RESUMEN
In the mol-ecule of the title compound, C(18)H(13)Cl(2)N(3)O(2)S(2), the thia-zolidinone ring has an envelope conformation with the S atom displaced by 0.394â (3)â Å from the plane of the other ring atoms. The thia-diazole ring is oriented at a dihedral angle of 7.40â (4)° with respect to the 4-methoxy-phenyl ring. Intra-molecular C-Hâ¯S, C-Hâ¯N and C-Hâ¯Cl hydrogen bonds result in the formation of two planar and two non-planar five-membered rings. The planar five-membered rings are oriented at a dihedral angle of 6.23â (3)°. The 2,4-dichloro-phenyl ring is oriented at dihedral angles of 84.21â (4) and 83.55â (3)° with respect to the thia-diazole and 4-methoxy-phenyl rings, respectively. In the crystal structure, inter-molecular C-Hâ¯O hydrogen bonds link the mol-ecules into centrosymmetric dimers.
RESUMEN
The title compound, C(15)H(10)ClF(3)N(2)O(3), is considered to belong to a fourth generation of insecticides with properties such as high selectivity, low acute toxicity for mammals and high biological activity. The dihedral angle between the two benzene rings is 59.3â (2)°. Intra-molecular C-Hâ¯O and N-Hâ¯O hydrogen bonds are observed. Inter-molecular N-Hâ¯O hydrogen bonding generates a centrosymmetric dimer. The F atoms are disordered over two positions; the site occupancy factors are 0.52 and 0.48.
RESUMEN
The title compound, C(18)H(14)FN(3)O(2)S(2), was synthesized by the reaction of 5-(4-fluoro-phen-yl)-N-(4-methoxy-benzyl-idene)-1,3,4-thia-diazol-2-amine and mercaptoacetic acid. The thia-zolidinone ring adopts a twist conformation. The 4-methoxy-phenyl ring is almost perpendicular to the thia-diazole ring, making a dihedral angle of 88.4â (3)°. The 4-fluoro-phenyl ring is nearly coplanar with the thia-diazole ring, the dihedral angle being 6.8â (3)°. The crystal structure involves C-Hâ¯N, C-Hâ¯O and C-Hâ¯S hydrogen bonds.
RESUMEN
The title compound, C(20)H(23)N(4)O(6)PS, was synthesized by the reaction of N-(4-methoxy-benzyl-idene)-5-(4-nitro-phen-yl)-1,3,4-thia-diazol-2-amine and diethyl phosphite. The thia-diazole and nitro-substituted phenyl rings in the mol-ecule are approximately coplanar, the dihedral angle being 5.3â (2)°. The dihedral angle formed by the mean plane through all non-H atoms of both the thia-diazole and the nitro-substituted phenyl ring with the plane of the meth-oxy-substituted phenyl ring is 48.9â (2)°. In the crystal structure, mol-ecules form centrosymmetric dimers as a result of N-Hâ¯O bonds involving amine H and phosphine oxide O atoms.
RESUMEN
In the mol-ecule of the title compound, C(17)H(15)N(3)O(3)S·0.5H(2)O, the thia-diazole ring is oriented with respect to the two 2-methoxy-phenyl rings at dihedral angles of 3.70â (3) and 1.74â (2)°. An intra-molecular N-Hâ¯O hydrogen bond results in the formation of a planar six-membered ring, which is oriented with respect to the thia-diazole ring at a dihedral angle of 1.33â (3)°. Thus, all of the rings are nearly coplanar. In the crystal structure, inter-molecular O-Hâ¯N and C-Hâ¯O hydrogen bonds link the mol-ecules.
RESUMEN
In the title compound, C(16)H(18)N(4)O(7)S, a synthetic sulfonyl-urea herbicide, there are intra-molecular N-Hâ¯N and C-Hâ¯O hydrogen bonds. Inter-molecular N-Hâ¯O and C-Hâ¯O hydrogen bonds form centrosymmetric dimers. The dihedral angle between the two rings is 50.00â (15)°.
RESUMEN
The title compound, C(19)H(15)Cl(2)N(3)OS(2), was synthesized by the reaction of N-(2,4-dichloro-phen-yl)-5-(3,5-dimethyl-phen-yl)-1,3,4-thia-diazol-2-amine and mercaptoacetic acid. The thia-zolidinone ring adopts a twist conformation. The 2,4-dichloro-phenyl ring is almost perpendicular to the thia-diazole ring, the dihedral angle being 82.8â (2)°. The 3,5-dimethyl-phenyl ring is nearly coplanar with the thia-diazole ring, the dihedral angle being 2.7â (2)°. An intramolecular C-Hâ¯N hydrogen bond is present.