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(Z)-3-(2-{2-[1-(4-Hy-droxy-phen-yl)ethyl-idene]hydrazin-1-yl}-1,3-thia-zol-4-yl)-2H-chromen-2-one.

ABSTRACT: In the title compound, C(20)H(15)N(3)O(3)S, an intra-molecular C-H⋯O hydrogen bond generates an S(6) ring motif. The chromene ring system is inclined at dihedral angles of 14.21 (9) and 9.91 (10)°, respectively, with respect to the thia-zole and benzene rings. The thia-zole ring makes a dihedral angle of 24.06 (11)° with the benzene ring. In the crystal structure, O-H⋯O hydrogen bonds link the mol-ecules into a zigzag chain along [20]. Weak N-H⋯O and C-H⋯O inter-actions connect the chains into a three-dimensional network. π-π stacking inter-actions with a centroid-centroid distance of 3.4209 (14) Å are also observed between the chains.

SUBMITTER: Arshad A

PROVIDER: S-EPMC3006946 | biostudies-literature |

REPOSITORIES: biostudies-literature

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(E)-3-(2-{2-[1-(3-Hy-droxy-phen-yl)ethyl-idene]hydrazin-yl}-1,3-thia-zol-4-yl)-2H-chromen-2-one.

Project description:In the title compound, C(20)H(15)N(3)O(3)S, the thia-zole ring is approximately planar, with a maximum deviation of 0.003?(1)?Å, and makes dihedral angles of 7.44?(6) and 1.88?(6)° with the hy-droxy-substituted phenyl ring and the pyran ring, respectively. The hydroxyl group is disordered over two sets of sites, with an occupancy ratio of 0.567?(3):0.433?(3). In the crystal, the major disorder component mol-ecules are connected via bifurcated (three-centre) O-H?O and C-H?O hydrogen bonds, generating R(1) (2)(6) motifs and resulting in supra-molecular chains along the a axis. In the minor occupancy component, however, mol-ecules are connected via C-H?O hydrogen bonds, forming supra-molecular chains along the b axis. Furthermore, the crystal structure is stabilized by ?-? inter-actions between the thia-zole rings [centroid-centroid distance = 3.5476?(7)?Å].

| S-EPMC3089171 | biostudies-literature

3-{2-[2-(3-Hy-droxy-benzyl-idene)hydrazin-1-yl]-1,3-thia-zol-4-yl}-2H-chromen-2-one hemihydrate.

Project description:In the title compound, C(19)H(13)N(3)O(3)S·0.5H(2)O, both organic mol-ecules (A and B) exist in E configurations with respect to the acyclic C=N bond and have similar overall conformations. In mol-ecule A, the essentially planar thia-zole ring [maximum deviation = 0.010?(2)?Å] is inclined at inter-planar angles of 11.44?(10) and 32.50?(12)°, with the 2H-chromene ring system and the benzene ring, respectively. The equivalent values for mol-ecule B are 0.002?(2)?Å, 7.71?(9) and 12.51?(12)°. In the crystal structure, neighbouring mol-ecules are inter-connected into infinite layers lying parallel to (010) by O-H?O, O-H?N, N-H?O and C-H?O hydrogen bonds. Further stabilization of the crystal structure is provided by weak inter-molecular C-H?? and ?-? [centroid-centroid distance = 3.6380?(19)?Å] inter-actions.

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3-{2-[2-(2-Fluoro-benzyl-idene)hydrazin-yl]-1,3-thia-zol-4-yl}-2H-chromen-2-one.

Project description:In the title compound, C(19)H(12)FN(3)O(2)S, the chromene ring system and the thia-zole ring are approximately planar [maximum deviations of 0.023?(3)?Å and 0.004?(2)?Å, respectively]. The chromene ring system is inclined at angles of 4.78?(10) and 26.51?(10)° with respect to the thia-zole and benzene rings, respectively, while the thia-zole ring makes a dihedral angle of 23.07?(12)° with the benzene ring. The mol-ecular structure is stabilized by an intra-molecular C-H?O hydrogen bond, which generates an S(6) ring motif. The crystal packing is consolidated by inter-molecular N-H?O hydrogen bonds, which link the mol-ecules into chains parallel to [100], and by C-H?? and ?-? [centroid-centroid distance = 3.4954?(15)?Å] stacking inter-actions.

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(E)-6-Bromo-3-{2-[2-(4-chloro-benzyl-idene)hydrazin-yl]thia-zol-5-yl}-2H-chromen-2-one.

Project description:In the title compound, C(19)H(11)N(3)O(2)SClBr, the chromene ring system and the thia-zole ring are each approximately planar, with maximum deviations of 0.033 (3) Å and 0.006 (3) Å, respectively. The mol-ecule adopts an E configuration about the central C=N double bond. The central thia-zole ring makes dihedral angles of 9.06 (14)° and 12.07 (11)° with the chloro-substituted phenyl ring and the chromene ring, respectively. The mol-ecular structure features a short C-H⋯O contact, which generates an S(6) ring motif. The crystal structure is stabilized by inter-molecular N-H⋯O hydrogen bonds, which link the mol-ecules into chains along the b axis. π-π stacking inter-actions [centroid-centroid distance = 3.4813 (15) Å] are also present.

| S-EPMC3099884 | biostudies-literature

3-{2-[2-(Diphenyl-methyl-ene)hydrazin-yl]thia-zol-4-yl}-2H-chromen-2-one.

Project description:In the title compound, C(25)H(17)N(3)O(2)S, the coumarin ring system is essentially planar with a maximum deviation of 0.019 (2) Å. A weak intra-molecular C-H⋯O hydrogen bond stabilizes the mol-ecular structure, so that the coumarin plane is approximately coplanar with the thia-zole ring, making a dihedral angle of 2.5 (10)°. The two phenyl rings are nearly perpendicular to each other, with a dihedral angle of 81.44 (12)°. In the crystal structure, the mol-ecules are linked into an infinite chain along the b axis by inter-molecular C-H⋯O hydrogen bonds. Weak C-H⋯π inter-actions are observed between the chains.

| S-EPMC3007000 | biostudies-literature

(E)-6-Bromo-3-{2-[2-(2-meth-oxy-benzyl-idene)hydrazin-yl]-1,3-thia-zol-4-yl}-2H-chromen-2-one.

Project description:In the title compound, C(20)H(14)BrN(3)O(3)S, the mol-ecule adopts an E configuration about the central C=N double bond. The chromene ring system and the thia-zole ring are approximately planar [maximum deviations = 0.029?(3) and 0.007?(3)?Å, respectively]. The chromene ring system is inclined at angles of 7.37?(12) and 13.90?(13)° with respect to the thia-zole and benzene rings, respectively, while the thia-zole ring makes a dihedral angle of 12.58?(15)° with the benzene ring. In the crystal, mol-ecules are connected by N-H?O hydrogen bonds, forming C(8) supra-molecular chains along the c axis.

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(E)-6-Bromo-3-{2-[2-(2-chloro-benzyl-idene)hydrazin-yl]thia-zol-5-yl}-2H-chromen-2-one dimethyl sulfoxide monosolvate.

Project description:In the title compound C(19)H(11)N(3)O(2)SClBr·C(2)H(6)OS, the mol-ecule adopts an E configuration about the central C=N double bond. The chromene ring system and the thia-zole ring are approximately planar, with maximum deviations of 0.027?(2) and 0.003?(1)?Å, respectively. The central thia-zole ring makes dihedral angles of 21.82?(9) and 5.88?(7)° with the chloro-substituted phenyl ring and the chromene ring, respectively. In the crystal, mol-ecules are connected via N-H?O, N-H?S and C-H?O hydrogen bonds, forming supra-molecular chains along the c axis. An intra-molecular C-H?O hydrogen bond occurs. ?-? inter-actions are observed between the thia-zole and phenyl rings [centroid-centroid distance = 3.6293?(10)?Å]. A short Br?Cl contact of 3.37?(6)?Å also occurs.

| S-EPMC3100073 | biostudies-literature

4-Hy-droxy-3-[(4-hy-droxy-2-oxo-2H-3-chromen-yl)(3-thien-yl)meth-yl]-2H-chromen-2-one.

Project description:The whole mol-ecule of the title compound, C(23)H(14)O(6)S, is disordered over two sets of sites with refined occupancies of 0.8733?(12):0.1267?(12). The dihedral angle between the mean planes through the chromene ring systems is 56.31?(5) and 55.2?(3)° for the major and minor components, respectively. In both components, a pair of intra-molecular O-H?O inter-actions generate rings of S(8) graph-set motif. In the crystal, the mol-ecules are linked by inter-molecular C-H?O inter-actions, forming chains along the b axis. The structure is further stabilized by ?-? inter-actions with centroid-centroid distances of 3.594?(2) and 3.608?(5)?Å.

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Methyl 2-((2Z,5Z)-2-{(E)-2-[1-(4-hy-droxy-phen-yl)ethyl-idene]hydrazin-1-yl-idene}-4-oxo-3-phenyl-1,3-thia-zolidin-5-yl-idene)acetate.

Project description:In the title compound, C20H17N3O4S, all non-H atoms, except those of the phenyl ring, are approximately coplanar [maximum deviation = 0.2214?(1)?Å], and the dihedral angle between their best plane and the benzene ring is 53.13?(1)°. A short intra-molecular O?S contact of 2.838?(1)?Å is formed between the ester carbonyl O atom and the S atom of the thia-zolidine ring. In the crystal, mol-ecules associated via O-H?O, C-H?O and C-H?S hydrogen bonds form layers parallel to (010), with only C-H?O-type short contacts between the mol-ecules in adjacent layers.

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4-Hy-droxy-3-[(4-hy-droxy-6,7-dimethyl-2-oxo-2H-chromen-3-yl)(4-oxo-4H-chromen-3-yl)meth-yl]-6,7-dimethyl-2H-chromen-2-one.

Project description:In the title compound, C(32)H(24)O(8), the mol-ecular structure is disordered over two positions with refined site occupancies of 0.8746?(10) and 0.1254?(10). The mean plane of the three chromeno rings make dihedral angles with each other of 65.12?(4), 62.91?(4) and 59.70?(4)° in the major occupancy component and 59.1?(3), 66.1?(3) and 58.8?(3)° in the minor component. Intra-molecular O-H?O hydrogen bonds stabil-ize the mol-ecular structure and the crystal structure is stabilized by weak C-H?? and ?-? inter-actions [centroid-centroid distances 3.496?(6)-3.672?(7)?Å].

| S-EPMC3009289 | biostudies-literature

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