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3-[(4-Phenyl-piperazin-1-yl)meth-yl]-5-(thio-phen-2-yl)-2,3-di-hydro-1,3,4-oxa-diazole-2-thione.

ABSTRACT: In the title compound, C17H18N4OS2, the 2-thienyl ring is disordered over two co-planar, opposite orientations in a 0.684?(2): 0.316 ratio. The 1,3,4-oxa-diazole ring is almost co-planar with the attached 2-thienyl ring [dihedral angles of 5.34?(19) and 4.8?(5)° for the major and minor components, respectively]. The relative disposition of the thione- and ring-S atoms is anti for the major orientation of the 2-thienyl residue. Overall, the shape of the mol-ecule approximates the letter V. In the crystal, a three-dimensional architecture is consolidated by a combination of weak C-H?S and C-H?? contacts.

SUBMITTER: El-Emam AA

PROVIDER: S-EPMC3647878 | biostudies-other | 2013 May

REPOSITORIES: biostudies-other

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3-[(4-Phenyl-piperazin-1-yl)meth-yl]-5-(thio-phen-2-yl)-2,3-di-hydro-1,3,4-oxa-diazole-2-thione.

El-Emam Ali A AA Al-Omar Mohamed A MA Al-Obaid Abdul-Rahman M AR Ng Seik Weng SW Tiekink Edward R T ER

Acta crystallographica. Section E, Structure reports online 20130410 Pt 5

In the title compound, C17H18N4OS2, the 2-thienyl ring is disordered over two co-planar, opposite orientations in a 0.684 (2): 0.316 ratio. The 1,3,4-oxa-diazole ring is almost co-planar with the attached 2-thienyl ring [dihedral angles of 5.34 (19) and 4.8 (5)° for the major and minor components, respectively]. The relative disposition of the thione- and ring-S atoms is anti for the major orientation of the 2-thienyl residue. Overall, the shape of the mol-ecule approximates the letter V. In the ...[more]

PMID: 23723844

Similar Datasets

Crystal structure of 3-[(4-benzyl-piperazin-1-yl)meth-yl]-5-(thio-phen-2-yl)-2,3-di-hydro-1,3,4-oxa-diazole-2-thione.

Project description:The title 1,3,4-oxa-diazole-2-thione derivative, C18H20N4OS2, crystallized with two independent mol-ecules (A and B) in the asymmetric unit. The 2-thienyl rings in both mol-ecules are rotationally disordered over two orientations by approximately 180° about the single C-C bond that connects it to the oxa-diazole thione ring; the ratios of site occupancies for the major and minor components were fixed in the structure refinement at 0.8:0.2 and 0.9:0.1 in mol-ecules A and B, respectively. The 1,3,4-oxa-diazole-2-thione ring forms dihedral angles of 7.71?(16), 10.0?(11) and 77.50?(12)° (mol-ecule A), and 6.5?(3), 6.0?(9) and 55.30?(12)° (mol-ecule B) with the major and minor parts of the disordered thio-phene ring and the mean plane of the adjacent piperazine ring, respectively, resulting in approximately V-shaped conformations for the mol-ecules. The piperazine ring in both mol-ecules adopts a chair conformation. The terminal benzene ring is inclined towards the mean plane of the piperazine ring with N-C-C-C torsion angles of -58.2?(3) and -66.2?(3)° in mol-ecules A and B, respectively. In the crystal, no inter-molecular hydrogen bonds are observed. The crystal packing features short S?S contacts [3.4792?(9)?Å] and ?-? inter-actions [3.661?(3), 3.664?(11) and 3.5727?(10)?Å], producing a three-dimensional network.

| S-EPMC4350721 | biostudies-literature

5-(Adamantan-1-yl)-3-[(4-fluoro-anilino)meth-yl]-2,3-di-hydro-1,3,4-oxa-diazole-2-thione.

Project description:In the title compound, C19H22FN3OS, the dihedral angle between the inclined oxa-diazole and benzene rings is 52.7?(3)°. In the crystal, helical supra-molecular chains along [100] are sustained by N-H?S hydrogen bonds supported by methyl-ene-benzene C-H?? inter-actions. The crystal studied was an inversion twin with the fractional contribution of the minor component being 0.33?(14).

| S-EPMC3648262 | biostudies-literature

5-(Adamantan-1-yl)-3-anilinomethyl-2,3-di-hydro-1,3,4-oxa-diazole-2-thione.

Project description:In the title compound, C19H23N3OS, the oxa-diazole and benzene rings are inclined at a dihedral angle of 50.30?(11)°, with the major twist between them occurring at the ring-methyl-ene N-C bond [N-N-C-N torsion angle = -101.2?(2)°]. In the crystal, helical supra-molecular chains along [010] are sustained by N-H?S hydrogen bonds. These are linked into layers lying parallel to (-101) by methyl-ene-phenyl C-H?? inter-actions.

| S-EPMC3648261 | biostudies-literature

Crystal structure of 3-{[4-(2-meth-oxy-phen-yl)piperazin-1-yl]meth-yl}-5-(thio-phen-2-yl)-1,3,4-oxa-diazole-2(3H)-thione.

Project description:The title compound, C18H20N4O2S2, is a new 1,3,4-oxa-diazole and a key pharmacophore of several biologically active agents. It is composed of a meth-yl(thio-phen-2-yl)-1,3,4-oxa-diazole-2(3H)-thione moiety linked to a 2-meth-oxy-phenyl unit via a piperazine ring that has a chair conformation. The thio-phene ring mean plane lies almost in the plane of the oxa-diazole ring, with a dihedral angle of 4.35 (9)°. The 2-meth-oxy-phenyl ring is almost normal to the oxa-diazole ring, with a dihedral angle of 84.17 (10)°. In the crystal, mol-ecules are linked by weak C-H⋯S hydrogen bonds and C-H⋯π inter-actions, forming layers parallel to the bc plane. The layers are linked via weak C-H⋯O hydrogen bonds and slipped parallel π-π inter-actions [inter-centroid distance = 3.6729 (10) Å], forming a three-dimensional structure. The thio-phene ring has an approximate 180° rotational disorder about the bridging C-C bond.

| S-EPMC4770969 | biostudies-literature

2-(Biphenyl-4-yl)-5-[3-(4,5,6,7-tetra-hydro-thieno[3,2-c]pyridine-5-ylsulfon-yl)thio-phen-2-yl]-1,3,4-oxa-diazole.

Project description:In the title mol-ecule, C(25)H(19)N(3)O(3)S(3), the tetra-hydro-pyridine ring adopts a half-chair conformation. The dihedral angle between the least-squares plane through the tetra-hydro-pyridine ring and two thio-phene and two benzene rings are 6.25?(9), 89.49?(9), 76.43?(9) and 84.93?(8)°, respectively, while the dihedral angle between the 1,3,4-oxadiazole and tetra-hydro-pyridine rings is 81.14?(9)°. In the crystal, adjacent mol-ecules are connected via weak C-H?N hydrogen bonds, forming a chain along the b axis.

| S-EPMC3201303 | biostudies-literature

5-(Adamantan-1-yl)-3-[(4-benzyl-piperazin-1-yl)meth-yl]-1,3,4-oxadiazole-2(3H)-thione.

Project description:The mol-ecule of the title compound, C(24)H(32)N(4)OS, is a functionalized 1,3,4-oxadiazole-2-thione with substituted piperazine and adamantanyl substituents attached at the 3- and 5-positions, respectively, of the oxadiazole spacer with an approximately C-shaped conformation. In the crystal, mol-ecules form dimers via C-H⋯S inter-action. The piperazine ring has a chair conformation; the substituents S, methyl-ene C and adamantane C of the essentially planar oxadiazole ring are approximately in the same plane, with distances of -0.046 (2), -0.085 (5) and 0.003 (4) Å, respectively. The dihedral angle between the planes of the phenyl and oxadiazole rings is 31.3 (3)°.

| S-EPMC3393978 | biostudies-literature

Dichloridobis[3-(4-meth-oxy-phen-yl)-2-methyl-5-(piperidin-1-yl)-2,3-di-hydro-1,2,4-oxa-diazole-?N (4)]platinum(II).

Project description:In title compound, [PtCl2(C15H21N3O2)2], the Pt(II) cation, located on an inversion center, is coordinated by two Cl(-) anions and two 3-(4-meth-oxy-phen-yl)-2-methyl-5-(piperidin-1-yl)-2,3-di-hydro-1,2,4-oxa-diazole ligands in a distorted Cl2N2 square-planar geometry. The di-hydro-oxa-diazole and piperidine rings display envelope (with the non-coordinating N atom as the flap atom) and chair conformations, respectively. In the crystal, weak C-H?Cl hydrogen bonds link the mol-ecules into supra-molecular chains running along the b axis. The piperidine ring is disordered over two positions with the occupancy ratio of 0.528?(4):0.472?(4).

| S-EPMC3793679 | biostudies-literature

5-(4-Pyrid-yl)-1,3,4-thia-diazole-2(3H)-thione.

Project description:The title compound C(7)H(5)N(3)S(2), occurs as the thione tautomer in the solid state; the dihedral angle between the pyridine and thia-diazole ring planes is 2.08?(6)°. In the crystal, mol-ecules are linked by N-H?N hydrogen bonds, generating C(8) chains propagating in [010].

| S-EPMC3050180 | biostudies-literature

Crystal structure of 2-{[(naphthalen-1-yl)oxy]meth-yl}-5-(2,4,5-tri-fluoro-phen-yl)-1,3,4-oxa-diazole.

Project description:In the title compound C19H11F3N2O2, the oxa-diazole ring and the naphthalene ring system are approximately planar (r.m.s. deviations of 0.001 and 0.020?Å, respectively) and the oxa-diazole ring makes dihedral angles of 13.11?(1) and 7.59?(1)° with the naphthalene ring system and the tri-fluoro-phenyl ring, respectively. In the crystal, C-H?N hydrogen bonds link mol-ecules into chains along the a-axis direction, while C-H?F contacts form additional chains along the ac diagonal. These contacts generate sheets of mol-ecules approximately parallel to the (011) plane.

| S-EPMC4350736 | biostudies-literature

3-[(N-Methyl-anilino)meth-yl]-5-(thio-phen-2-yl)-1,3,4-oxadiazole-2(3H)-thione.

Project description:In the title compound, C(14)H(13)N(3)OS(2), the thio-phene ring is disordered over two orientations by ca 180° about the C-C bond axis linking the ring to the rest of the mol-ecule, with a site-occupancy ratio of 0.651?(5):0.349?(5). The central 1,3,4-oxadiazole-2(3H)-thione ring forms dihedral angles of 9.2?(5), 4.6?(11) and 47.70?(7)° with the major and minor parts of the disordered thio-phene ring and the terminal phenyl ring, respectively. In the crystal, no significant inter-molecular hydrogen bonds are observed. The crystal packing is stabilized by ?-? inter-actions [centroid-centroid distance = 3.589?(2)?Å].

| S-EPMC3344480 | biostudies-literature

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