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(4-Methyl-phen-yl)[1-(4-methyl-phen-yl)-3-(5-nitro-2-fur-yl)-1H-pyrazol-4-yl]methanone.

ABSTRACT: In the title pyrazole compound, C(22)H(17)N(3)O(4), an intra-molecular C-H?O contact generates a seven-membered ring, producing an S(7) ring motif. The furan and pyrazole rings are essentially planar [maximum deviations = 0.004?(1) and 0.004?(2)?Å, respectively] and are almost coplanar, making a dihedral angle of 3.75?(10)°. One of the methyl-phenyl groups is inclined to the pyrazole ring, as indicated by the dihedral angle of 48.41?(9)°. In the crystal structure, mol-ecules are linked into chains along [10] by C-H?O contacts. The crystal structure is further stabilized by ?-? inter-actions [centroid-centroid distance = 3.4437?(10)?Å].

SUBMITTER: Goh JH

PROVIDER: S-EPMC2972131 | biostudies-literature | 2009 Nov

REPOSITORIES: biostudies-literature

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(4-Methyl-phen-yl)[1-(4-methyl-phen-yl)-3-(5-nitro-2-fur-yl)-1H-pyrazol-4-yl]methanone.

Goh Jia Hao JH Fun Hoong-Kun HK Nithinchandra Rai N Satheesh NS Kalluraya B B

Acta crystallographica. Section E, Structure reports online 20091114 Pt 12

In the title pyrazole compound, C(22)H(17)N(3)O(4), an intra-molecular C-H⋯O contact generates a seven-membered ring, producing an S(7) ring motif. The furan and pyrazole rings are essentially planar [maximum deviations = 0.004 (1) and 0.004 (2) Å, respectively] and are almost coplanar, making a dihedral angle of 3.75 (10)°. One of the methyl-phenyl groups is inclined to the pyrazole ring, as indicated by the dihedral angle of 48.41 (9)°. In the crystal structure, mol-ecules are linked into chai ...[more]

PMID: 21578827

Similar Datasets

(4-Methyl-phen-yl)[3-(5-nitro-2-fur-yl)-1-phenyl-1H-pyrazol-4-yl]methanone.

Project description:In the title pyrazole compound, C(21)H(15)N(3)O(4), an intra-molecular C-H?O hydrogen bond generates an S(7) ring motif. The essentially planar furan and pyrazole rings [maximum atomic deviations of 0.011?(2) and 0.006?(2)?Å, respectively] make a dihedral angle of 9.21?(11)°. The nitro group is approximately coplanar with the attached furan ring, as indicated by the dihedral angle of 4.5?(2)°. In the crystal structure, inter-molecular C-H?O inter-actions form bifurcated hydrogen bonds, generating R(1) (2)(7) ring motifs. These hydrogen bonds link the mol-ecules into infinite chains along the a axis. The crystal structure is further stabilized by weak inter-molecular ?-? inter-actions [centroid-centroid distance = 3.4118?(10)?Å].

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[3-(5-Nitro-2-fur-yl)-1-phenyl-1H-pyrazol-4-yl](phen-yl)methanone.

Project description:In the title pyrazole compound, C(20)H(13)N(3)O(4), an intra-molecular C-H?O hydrogen bond generates a seven-membered ring, producing an S(7) ring motif. The essentially planar furan and pyrazole rings [maximum deviations of 0.002?(1) and 0.007?(1)?Å, respectively] are coplanar with each other, forming a dihedral angle of 3.06?(10)°. The pyrazole ring forms dihedral angles of 8.51?(9) and 56.81?(9)° with the two benzene rings. The nitro group is coplanar with the attached furan ring, as indicated by the dihedral angle of 2.5?(3)°. In the crystal packing, inter-molecular C-H?O hydrogen bonds link adjacent mol-ecules into two-mol-ecule-wide chains along the a axis. The crystal packing is further stabilized by weak inter-molecular C-H?? and ?-? inter-actions [centroid-centroid distance = 3.4441?(10)?Å].

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(4-Chloro-phen-yl)[1-(4-methoxy-phen-yl)-3-(5-nitro-2-fur-yl)-1H-pyrazol-4-yl]methanone.

Project description:In the title compound, C(21)H(14)ClN(3)O(5), an intra-molecular C-H?O hydrogen bond generates an S(7) ring motif and the furan and pyrazole rings are almost coplanar, making a dihedral angle of 1.98?(5)°. The pyrazole ring is inclined at dihedral angles of 47.59?(4) and 7.27?(4)° to the chloro-phenyl and methoxy-phenyl groups, respectively. The nitro group is almost coplanar to its attached furan ring [dihedral angle = 2.03?(12)°]. In the crystal, inter-molecular C-H?O hydrogen bonds link the mol-ecules into a three-dimensional network. The crystal structure also features short inter-molecular O?N [2.8546?(12)?Å] and Cl?O [3.0844?(9)?Å] contacts as well as aromatic ?-? stacking inter-actions [centroid-centroid distance = 3.4367?(6)?Å].

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5-(2-Fur-yl)-3-methyl-1-(3-nitro-phen-yl)-4,5-dihydro-1H-pyrazole.

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(4-Fluoro-phen-yl)[6-(2-fur-yl)-7-nitro-2,3,4,6,7,8-hexa-hydro-1H-pyrido[1,2-a]pyrimidin-9-yl]methanone.

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Crystal structure of [1-(3-chloro-phen-yl)-5-hy-droxy-3-methyl-1H-pyrazol-4-yl](p-tol-yl)methanone.

Project description:In the title compound C18H15ClN2O2, the dihedral angles between the central pyrazole ring and the pendant chloro-benzene and p-tolyl rings are 17.68?(10) and 51.26?(12)°, respectively. An intra-molecular O-H?O hydrogen bond is observed, which closes an S(6) ring.

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1-{3-(4-Methyl-phen-yl)-5-[5-(2-nitro-phen-yl)furan-2-yl]-4,5-di-hydro-1H-pyrazol-1-yl}ethanone.

Project description:In the title compound, C22H19N3O4, the dihedral angle between the furan and pyrazole rings is 82.73?(19)° while the dihedral angles between the furan and pyrazole rings and their attached benzene rings are 31.93?(18) and 1.88?(18)°, respectively. In the crystal, inversion dimers linked by pairs of C-H?O hydrogen bonds generate R 2 (2)(16) loops. In addition, weak C-H?? and aromatic ?-? stacking [minimum centroid-centroid distance = 3.5374?(17)?Å] inter-actions are observed.

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Phen-yl(3-methyl-1-phenyl-sulfonyl-1H-indol-2-yl)methanone.

Project description:In the title compound, C(22)H(17)NO(3)S, the N atom of the indole ring system deviates by 0.031?(3)?Å from a least-squares plane fitted through all nine non-H ring atoms. The geometry around the S atom can be described as distorted tetra-hedral. As a result of the electron-withdrawing character of the phenyl-sulfonyl groups, the N-Csp(2) bond lengths are longer than the typical mean value for N atoms with a planar configuration.

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(Z)-1-(2-Chloro-phen-yl)-3-methyl-4-[2-(4-nitro-phen-yl)hydrazin-1-yl-idene]-1H-pyrazol-5(4H)-one.

Project description:There are two independent mol-ecules, A and B, in the asymmetric unit of the title compound, C(16)H(12)ClN(5)O(3). The relative orientations of the chloro-phenyl ring with respect to the pyrazole ring in the two crystallographically independent mol-ecules are different, and their corresponding dihedral angles are -53.3?(2) and 114.09?(18)° in mol-ecules A and B, respectively. There are two strong intramolecular N-H?O hydrogen bonds, and two weak intramolecular C-H?O and C-H?Cl hydrogen bonds. The crystal packing is constructed by weak C-H?O and N-H?O inter-actions, and two ?-? stacking inter-actions [centroid-centroid distances = 3.7894?(9) and 3.5719?(10)?Å], forming a mol-ecular ladder along the a axis.

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