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3-Ethyl-4-[(E)-(4-fluoro-benzyl-idene)amino]-1H-1,2,4-triazole-5(4H)-thione.

ABSTRACT: In the title compound, C(11)H(11)FN(4)S, the dihedral angle between the 1,2,4-triazole ring and the benzene ring is 25.04?(12)° and an intra-moleuclar C-H?S inter-action leads to an S(6) ring. In the crystal, inversion dimers linked by pairs of N-H?S hydrogen bonds generate R(2) (2)(8) loops.

SUBMITTER: Jeyaseelan S

PROVIDER: S-EPMC3344533 | biostudies-literature | 2012 May

REPOSITORIES: biostudies-literature

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4-[(E)-(4-Fluoro-benzyl-idene)amino]-3-methyl-1H-1,2,4-triazole-5(4H)-thione.

Project description:In the asymmetric unit of the title compound, C(10)H(9)FN(4)S, there are two independent mol-ecules in which the dihedral angles between the 1,2,4-triazole and benzene rings are 36.85 (10) and 7.81 (10)°. In the crystal, N-H⋯S inter-actions link pairs of independent mol-ecules into dimers. There are also π-π inter-actions between the triazole and benzene rings of inversion-related pairs of the more planar mol-ecule [centroid-centroid distance = 3.6430 (13) Å].

| S-EPMC3379215 | biostudies-literature

3-Ethyl-4-[(E)-2-methyl-benzyl-idene-amino]-1H-1,2,4-triazole-5(4H)-thione.

Project description:Crystals of the title compound, C(12)H(14)N(4)S, were obtained from a condensation reaction of 4-amino-3-ethyl-1H-1,2,4-triazole-5(4H)-thione and 2-methyl-benzaldehyde. In the mol-ecular structure, there is a short N=C double bond [1.255 (2) Å], and the benzene and triazole rings are located on opposite sites of this double bond. The two rings are approximately parallel to each other, the dihedral angle being 1.75 (11)°. A partially overlapped arrangement is observed between the nearly parallel triazole and benzene rings of adjacent mol-ecules; the perpendicular distance of the centroid of the triazole ring from the benzene ring is 3.482 Å, indicating the existence of π-π stacking in the crystal structure.

| S-EPMC2962033 | biostudies-literature

4-[(5-Bromo-2-hy-droxy-benzyl-idene)amino]-3-ethyl-1H-1,2,4-triazole-5(4H)-thione.

Project description:The title compound, C11H11BrN4OS, crystallized as a racemic twin with two symmetry-independent mol-ecules in the asymmetric unit. The dihedral angles between the benzene and triazole rings of the two independent mol-ecules are 56.41?(18) and 54.48?(18)°. An intra-molecular O-H?N hydrogen bond occurs in each mol-ecule. In the crystal, pairs of symmetry-independent mol-ecules are linked by pairs of almost linear N-H?S hydrogen bonds, forming cyclic dimers characterized by an R 2 (2)(8) motif. There are weak ?-? inter-actions between the benzene rings of symmetry-independent mol-ecules, with a centroid-centroid distance of 3.874?(3)?Å.

| S-EPMC4158482 | biostudies-literature

3-Benzyl-4-ethyl-1H-1,2,4-triazole-5(4H)-thione.

Project description:The title compound, C(11)H(13)N(3)S, exists in the 5-thioxo tautomeric form. The benzene ring exhibits disorder with a refined ratio of 0.77?(2):0.23?(2) for components A and B with a common bridgehead C atom. The 1,2,4-triazole ring is essentially planar, with a maximum deviation of 0.002?(3)?Å for the benzyl-substituted C atom, and forms dihedral angles of 88.94?(18) and 86.56?(49)° with the benzene rings of components A and B, respectively. The angle between the plane of the ethyl chain and the mean plane of 1,2,4-triazole ring is 88.55?(15)° and this conformation is stabilized by an intra-molecular C-H?S contact. In the crystal, pairs of N-H?S hydrogen bonds link mol-ecules into inversion dimers. ?-? inter-actions are observed between the triazole and benzene rings, with centroid-centroid separations of 3.547?(4) and 3.544?(12)?Å for components A and B, and slippages of 0.49?(6) and 0.58?(15)?Å, respectively.

| S-EPMC3569223 | biostudies-literature

4-[(E)-(4-Chloro-benzyl-idene)amino]-3-methyl-1H-1,2,4-triazole-5(4H)-thione.

Project description:In the title compound, C10H9ClN4S, the dihedral angle between the mean planes of the phenyl and 1H-1,2,4-triazole-5(4H)-thione rings is 25.3 (9)°. The latter ring is essentially planar, with maximum deviations of 0.010 and -0.010 Å for the ring N atom in the 4-position and ring C atom bearing the methyl group, respectively. An intra-molecular C-H⋯S contact occurs. In the crystal, pairs of weak N-H⋯S inter-actions link the mol-ecules into inversion dimers in the ac plane, forming R 2 (2)(8) graph-set motifs. In addition, weak π-π inter-actions [centroid-centroid distances = 3.3463 (14) and 3.6127 (13)Å] are observed.

| S-EPMC3914094 | biostudies-literature

4-[(4-Fluoro-benzyl-idene)amino]-3-[1-(4-isobutyl-phen-yl)eth-yl]-1H-1,2,4-triazole-5(4H)-thione.

Project description:In the title compound, C(21)H(23)FN(4)S, the benzene rings of the isobutyl-phenyl and fluoro-benzene units form dihedral angles of 75.89 (7) and 13.26 (7)°, respectively, with the triazole ring. An intra-molecular C-H⋯S hydrogen-bonding contact generates an S(6) ring motif. In the crystal packing, pairs of N-H⋯S hydrogen bonds link neighbouring mol-ecules into inversion dimers, forming R(2) (2)(8) ring motifs. The crystal structure is further stabilized by C-H⋯π inter-actions.

| S-EPMC2969932 | biostudies-literature

4-[(2-Bromo-benzyl-idene)amino]-3-(pyridin-4-yl)-1H-1,2,4-triazole-5(4H)-thione.

Project description:In the title compound, C(14)H(10)BrN(5)S, the dihedral angle between the triazole ring and the pyridine and bromo-benzene rings are 26.42?(13) and 6.28?(13)°, respectively. The molecule exists as a thione in the solid state. In the crystal, mol-ecules are linked by N-H?N hydrogen bonds, generating [010] C(8) chains.

| S-EPMC3393270 | biostudies-literature

4-[(3-Nitro-benzyl-idene)amino]-3-(pyridin-4-yl)-1H-1,2,4-triazole-5(4H)-thione.

Project description:In the title compound, C(14)H(10)N(6)O(2)S, the dihedral angle between the pyridine and triazole rings is 3.21 (10)°. The mol-ecule is significantly twisted about the N(t)-N(b) (t = triazole and b = benzyl-idene) bond [C-N(t)-N(b)=C = 151.64 (17)°]. In the crystal, mol-ecules are linked by weak N-H⋯N hydrogen bonds, generating C(8) chains propagating in [10[Formula: see text]].

| S-EPMC3274976 | biostudies-literature

4-[(E)-(4-Hy-droxy-benzyl-idene)amino]-3-methyl-1H-1,2,4-triazole-5(4H)-thione.

Project description:The title compound, C10H10N4OS, is nearly planar with the mean planes of the hy-droxy-benzyl and triazole rings inclined at an angle of only 3.2 (7)°. In the crystal, O-H⋯N hydrogen bonds between the hy-droxy group and the triazole ring in concert with weak N-H⋯S inter-molecular inter-actions between the triazole ring and thione group form chains along [-210] enclosing R 2 (2)(8) graph-set motifs. A weak intra-molecular C-H⋯S inter-action and inter-molecular π-π inter-actions [centroid-centroid distance = 3.5990 (15) Å] are also observed.

| S-EPMC4051099 | biostudies-literature

4-(5-Bromo-2-hydroxy-benzyl-idene-amino)-3-methyl-1H-1,2,4-triazole-5(4H)-thione.

Project description:In the title compound, C(10)H(9)BrN(4)OS, the triazole ring forms a dihedral angle of 72.05 (14)° with the benzene ring. The conformation of the mol-ecule is stabilized by intra-molecular O-H⋯·N hydrogen bonding. The crystal packing is determined by inter-molecular N-H⋯S inter-actions, a short Br⋯S contact of 3.4464 (13) Å and π-π stacking of the triazole rings and of the benzene rings (centroid-centroid distances of 3.4109 and 3.569 Å, respectively).

| S-EPMC2960248 | biostudies-literature

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