Mohd Sukeri Mohd Yusof

N-(4-Chloro­butanoyl)-N′-(2-fluoro­phen­yl)thio­urea

In the title compound, C11H12ClFN2OS, the asymmetric unit consists of two indenpendent molecules. Both molecules maintain a trans–cis configuration of the positions of the butanoyl and fluorophenyl groups with respect to the thiono group across their C—N bonds and are stabilized by classical intramolecular N—H⋯O hydrogen bonds. In the crystal, intermolecular N—H⋯O, C—H⋯S and N—H⋯S hydrogen bonds link the molecules into infinite chains along the c axis.

N-(3-Nitro­phen­yl)-N′-pivaloylthio­urea

In the title compound, C12H15N3O3S, there is an intramolecular N—H⋯O hydrogen bond. The crystal structure is stabilized by intermolecular N—H⋯O, N—H⋯S and C—H⋯S hydrogen bonds, forming a two-dimensional network parallel to the ac plane.

Synthesis and crystal structure of N-6-[(4-pyridylamino)carbonyl]-pyridine-2-carboxylic acid methyl ester zinc complex

A reaction between monoamide ligand namely N-6-[(4-pyridylamino)carbonyl]-pyridine-2-carboxylic acid methyl ester (L4) and zinc chloride has been attempted in order to generate a carboxylate complex suitable for anion inclusion. This reaction gives rise to a formation of discrete complex with general formula [ZnCl2(L4)2]. Complex [ZnCl2(L4)2] crystallizes in the monoclinic space group, P21/c, with one zinc(II) center, one molecule of ligand L4, one coordinated chloride and one methanol molecule in the asymmetric unit. The extended structure of this molecule shows that the zinc atom is coordinated by four donors: two L4 and two chloride anions. The zinc atom adopts distorted tetrahedral geometry with the angles between the donors in the range 103.62(11)-122.74(8)°. In this study, the amide cavity is bound with methanol through hydrogen-bonding interactions. The methanol molecules is hydrogen bonded to the amide moiety with bond lengths O30-H8···O12 and N17-H17···O30 of 1.988 and 2.078 Å, respectively.

4-tert-Butyl-N-[(2,6-dimethyl-phen-yl)carbamothio-yl]benzamide.

The asymmetric unit of the title compound, C20H24N2OS, consists of two crystallographically independent molecules. In each molecule, an intramolecular N—H⋯O hydrogen bond forms an S(6) ring motif. The dihedral angles between the terminal benzene rings in the two molecules are 75.52 (7) and 42.80 (7)°. In the crystal, intermolecular N—H⋯S interactions link the molecules into a chain along the c axis.

N-(2,6-Dimethylphenyl)-N′-propanoyl­thiourea

In the title compound, C12H16N2OS, an intramolecular N—H⋯O hydrogen bond forms an S(6) ring motif. The propionylthiourea group is approximately planar [with a maximum deviation of 0.135 (2) Å] and forms a dihedral angle of 83.39 (7)° with the benzene ring. In the crystal, molecules are linked by pairs of N—H⋯S hydrogen bonds, forming centrosymmetric dimers and generating R 2 2(8) ring motifs.

N-[(2,4-Dimethyl­phen­yl)carbamothio­yl]-2-methyl­benzamide

The title compound, C17H18N2OS, adopts a trans–cis geometry of the thiourea group which is stabilized by intramolecular hydrogen bonds between the O atom of the carbonyl group and the H atom of the thioamide group. A C—H⋯S intramolecular hydrogen bond is also present. In the crystal structure, molecules are linked by intermolecular N—H⋯S hydrogen bonds to form centrosymmetric dimers.

1-(2-Bromo-phen-yl)-3-(4-chloro-butano-yl)thio-urea.

The asymmetric unit of the title compound, C11H12BrClN2OS, consists of two crystallographically independent molecules. In each molecule, the butanoylthiourea unit is nearly planar, with maximum deviations of 0.1292 (19) and 0.3352 (18) Å from the mean plane defined by nine non-H atoms, and is twisted relative to the terminal benzene ring with dihedral angles of 69.26 (7) and 82.41 (7)°. An intramolecular N—H⋯O hydrogen bond generates an S(6) ring motif in each butanoylthiourea unit. In the crystal, N—H⋯O hydrogen bonds link the two independent molecules together, forming an R 2 2(12) ring motif. The molecules are further connected into a tape along the c axis via N—H⋯S and C—H⋯S hydrogen bonds.

2-(4-Chloro­phen­yl)-1-phenyl-1H-benz­imidazole

In the title compound, C19H13ClN2, the dihedral angle formed by the imidazole core with the chlorophenyl and phenyl rings are 24.07 (4) and 67.24 (4)°, respectively.

N-(4-Chloro­butano­yl)-N′-[2-(trifluoro­meth­yl)phen­yl]thio­urea

In the title compound, C12H12ClF3N2OS, the dihedral angle between the benzene ring and the thiourea fragment is 69.41 (5)°. The thiourea N—H atoms adopt an anti conformation, such that one of them forms an intramolecular N—H⋯O hydrogen bond, generating an S(6) ring. In the crystal, both N—H groups form inversion dimers, one via a pair of N—H⋯S hydrogen bonds and one via a pair of N—H⋯O hydrogen bonds. These lead to R 2 2(8) and R 2 2(12) loops, respectively. Weak C—H⋯Cl, C—H⋯F, C—H⋯S and π–π [centroid–centroid separation = 3.7098 (6)Å and slippage = 1.853 Å] interactions also occur.

1-(Biphenyl-4-ylcarbon­yl)-3-(4-nitro­phen­yl)thio­urea

In the title compound, C20H15N3O3S, the two benzene rings of the biphenyl group form a dihedral angle of 40.11 (15)°. The conformation of the molecule is trans–cis and is stabilized by two intramolecular N—H⋯O and C—H⋯S hydrogen bonds. In the crystal structure, the molecules are linked by weak π–π stacking interactions [centroid–centroid distance = 3.991 (2) Å].