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4-{3-[(2-Isopropyl-5-methyl-phen-oxy)meth-yl]-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazin-6-yl}-3-(p-tol-yl)sydnone.

ABSTRACT: In the title triazolothia-diazin compound, C(24)H(24)N(6)O(3)S (systematic name: 4-{3-[(2-isopropyl-5-methyl-phen-oxy)meth-yl]-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazin-6-yl}-3-(4-methyl-phen-yl)-1,2,3-oxadiazol-3-ium-5-olate), an intra-molecular C-H⋯O hydrogen bond generates an S(6) ring motif. The two terminal methyl groups of the isopropyl unit are disordered over two sets of positions in a 0.715 (4):0.285 (4) ratio. The mean planes formed through the major and minor disordered isopropyl units are inclined at inter-planar angles of 73.1 (4) and 86.6 (8)°, respectively, with the attached phenyl ring. The 3,6-dihydro-1,3,4-thia-diazine ring adopts a twist-boat conformation. The inter-planar angle formed between 1,2,3-oxadiazole and 1,2,4-triazole rings is 18.80 (11)°. In the crystal, neighbouring mol-ecules are linked into sheets lying parallel to the bc plane by C-H⋯N hydrogen bonds. Weak inter-molecular π-π inter-actions [centroid-centroid distances = 3.2935 (11) and 3.5590 (12) Å] further stabilize the crystal structure.

SUBMITTER: Goh JH

PROVIDER: S-EPMC3007969 | biostudies-literature |

REPOSITORIES: biostudies-literature

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3-Phenyl-4-{3-[(p-tol-yloxy)meth-yl]-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazin-6-yl}sydnone.

Project description:In the title compound (systematic name3-phenyl-4-{3-[(p-tol-yloxy)meth-yl]-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazin-6-yl}-1,2,3-oxadiazol-3-ium-5-olate), C(20)H(16)N(6)O(3)S, an intra-molecular C-H⋯O hydrogen bond generates an S(6) ring motif. The 3,6-dihydro-1,3,4-thia-diazine ring adopts a twist-boat conformation. The 1,2,3-oxadiazole and 1,2,4-triazole rings are inclined to each other at an inter-planar angle of 44.13 (13)°. The phenyl ring makes an inter-planar angle of 67.40 (13)° with the attached 1,2,3-oxadiazole ring. In the crystal structure, adjacent mol-ecules are inter-connected into two-mol-ecule-thick arrays parallel to (100) via C-H⋯O and C-H⋯N hydrogen bonds. A short S⋯O contact [2.9512 (18) Å] is observed.

| S-EPMC3007576 | biostudies-literature

4-[3-(Phen-oxy-meth-yl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazin-6-yl]-3-(p-tol-yl)sydnone.

Project description:In the title triazolothia-diazine derivative, C(20)H(16)N(6)O(3)S {systematic name: 3-(4-methyl-phen-yl)-4-[3-(phen-oxy-meth-yl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazin-6-yl]-1,2,3-oxadiazol-3-ium-5-olate}, an S(6) ring motif is generated by an intra-molecular C-H?O hydrogen bond. The 3,6-dihydro-1,3,4-thia-diazine ring adopts a twist-boat conformation. The dihedral angle between the 1,2,3-oxadiazole and 1,2,4-triazole rings is 46.45?(14)°. The 1,2,3-oxadiazole ring is inclined at dihedral angle of 59.49?(13)° with respect to the benzene ring attached to it. In the crystal structure, inter-molecular C-H?O and C-H?N hydrogen bonds link neighbouring mol-ecules into two-mol-ecule-thick arrays parallel to the bc plane. A short S?O inter-action [2.9565?(19)?Å] also occurs.

| S-EPMC3007409 | biostudies-literature

3-(p-Tol-yl)-4-{3-[(phenyl-amino)-meth-yl]-7H-[1,2,4]triazolo[3,4-b][1,3,4]thia-diazin-6-yl}sydnone.

Project description:In the title compound, C(20)H(17)N(7)O(2)S (systematic name: 3-(4-methyl-phen-yl)-4-{3-[(phenyl-amino)-meth-yl]-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazin-6-yl}-1,2,3-oxadiazol-3-ium-5-olate), the 3,6-dihydro-2H-1,3,4-thia-diazine ring adopts a half-boat conformation. The oxadiazol-3-ium ring makes dihedral angles of 57.99?(6) and 54.48?(6)° with the phenyl and benzene rings, respectively, while the 1,2,4-triazole ring forms corresponding angles of 37.35?(6) and 73.89?(6)°. The dihedral angle between the oxadiazol-3-ium and 1,2,4-triazole rings is 21.12?(6)°. In the crystal, the mol-ecules are linked via inter-molecular N-H?O and C-H?N hydrogen bonds into a layer parallel to the (100) plane. The crystal structure is further consolidated by C-H?? inter-actions. An intra-molecular C-H?O hydrogen bond is also observed, which generates an S(6) ring motif.

| S-EPMC3099773 | biostudies-literature

4-[3-(1-Naphthyl-oxymeth-yl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazin-6-yl]-3-p-tolyl-sydnone.

Project description:In the title sydnone compound, C(24)H(18)N(6)O(3)S {systematic name: 4-[3-(1-naphthyl-oxymeth-yl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazin-6-yl]-3-p-tolyl-4,5-dihydro-1,2,3-oxadiazol-3-ium-5-olate} an intra-molecular C-H?O hydrogen bond generates an S(6) ring motif. The 3,6-dihydro-1,3,4-thia-diazine ring adopts a twist-boat conformation. The essentially planar 1,2,3-oxadiazole and 1,2,4-triazole rings [maximum deviations of 0.006?(1) and 0.008?(1)?Å, respectively] are inclined to one another at inter-planar angle of 44.11?(4)°. The naphthalene unit forms an inter-planar angle of 66.40?(4)° with the 1,2,4-triazole ring. In the crystal packing, pairs of inter-molecular C-H?O hydrogen bonds link adjacent mol-ecules into dimers incorporating R(2) (2)(12) ring motifs. Further stabilization is provided by weak C-H?? inter-actions.

| S-EPMC2979609 | biostudies-literature

2-(6-Phenyl-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazin-3-yl)-1,3-benzothia-zole.

Project description:In the title compound, C(17)H(11)N(5)S(2), the dihedral angles formed between the triazole ring and the benzene ring and the 1,3-benzothia-zole ring system are 8.67?(8) and 13.90?(9)°, respectively. The conformation of the triazolo-thia-diazin-3-yl fused ring system is a twisted half-chair. Overall, the mol-ecule adopts a flattened shape. Supra-molecular helical chains along the a axis sustained by C-H?N inter-actions are found in the crystal structure. These are linked via C-H?? contacts as well as ?-? [centroid-centroid distance = 3.5911?(12)?Å] inter-actions between the triazole and thia-zole rings.

| S-EPMC3201480 | biostudies-literature

3-Ethyl-6-(4-fluoro-phen-yl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazine.

Project description:In the title compound, C(12)H(11)FN(4)S, the thia-diazine ring adopts a twist-boat conformation. The dihedral angle between the triazolothia-diazine system and the benzene ring is 10.54?(9)°. The crystal structure is characterized by C-H?N hydrogen bonds. The crystal packing also exhibits ?-? inter-actions, with a centroid-centroid distance of 3.6348?(15)?Å.

| S-EPMC3379427 | biostudies-other

6-(4-Bromo-phen-yl)-3-methyl-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazine.

Project description:In the title compound, C(11)H(9)BrN(4)S, the 1,2,4-triazole ring is essentially planar (r.m.s. deviation = 0.020?Å) and makes a dihedral angle of 29.1?(5)° with the bromo-benzene ring. The 3,6-dihydro-1,3,4-thia-diazine ring adopts a twist-boat conformation. In the crystal, mol-ecules are linked by C-H?N inter-actions into sheets lying parallel to the (010) plane. The same N atom accepts two such hydrogen bonds.

| S-EPMC3379277 | biostudies-other

(Z)-7-[2-(4-Bromo-phen-yl)hydrazin-1-yl-idene]-6-methyl-3-(pyridin-4-yl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazine.

Project description:In the asymmetric unit of the title compound, C(16)H(12)BrN(7)S, there are two crystallographically independent mol-ecules with similar conformations. Both mol-ecules are slightly twisted; the central 1,2,4-triazolo[3,4-b]-1,3,4-thia-diazine ring system makes dihedral angles of 9.65 (15) and 13.29 (15)° with the pyridine and benzene rings, respectively, in one mol-ecule, whereas the corresponding values in the other mol-ecule are 9.30 (15) and 4.84 (15)°. A weak intra-molecular C-H⋯N inter-action with an S(6) ring motif is observed in each mol-ecule. In the crystal, the independent mol-ecules are each linked through N-H⋯N hydrogen bonds and weak C-H⋯N interactions into ribbons along the c axis. The ribbons are further linked together by weak C-H⋯N, C-H⋯π and π-π [centroid-centroid distances = 3.572 (2)-3.884 (2) Å] inter-actions.

| S-EPMC3344618 | biostudies-literature

3,6-Bis(3,4,5-trimethoxy-phen-yl)-1,2,4-triazolo[3,4-b][1,3,4]thia-diazole.

Project description:In the mol-ecule of the title compound, C(21)H(22)N(4)O(6)S, the planar central heterocyclic ring system is oriented with respect to the trimethoxy-phenyl rings at dihedral angles of 2.60 (5) and 3.60 (6)°. Intra-molecular C-H⋯N and C-H⋯S hydrogen bonds result in the formation of planar five- and six-membered rings. In the crystal structure, inter-molecular C-H⋯O hydrogen bonds link the mol-ecules. There is a C-H⋯π contact between a methyl group and a trimethoxy-phenyl ring, and a π-π contact between the central heterocyclic ring system and a trimethoxy-phenyl ring [centroid-centroid distance = 3.640 (1) Å].

| S-EPMC2962044 | biostudies-literature

4-[2-(2-Benzyl-idene-hydrazin-ylidene)-3,6-dihydro-2H-1,3,4-thia-diazin-5-yl]-3-(4-meth-oxy-phen-yl)-sydnone.

Project description:In the title compound, C(19)H(16)N(6)O(3)S, the 3,6-dihydro-1,3,4-thia-diazine ring adopts a twist-boat conformation. The dihedral angle between the meth-oxy-substituted benzene ring and the oxadiazole ring is 71.91 (7)°. In the crystal structure, centrosymmetrically related mol-ecules are linked into dimers via pairs of inter-molecular N-H⋯N hydrogen bonds, generating R(2) (2)(8) ring motifs. There is an intra-molecular C-H⋯O hydrogen bond which generates an S(6) ring motif.

| S-EPMC3099954 | biostudies-literature

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