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4-(4-Fluoro-phen-yl)-1-(4-nitro-phen-yl)-3-(pyridin-4-yl)-1H-pyrazol-5-amine.

ABSTRACT: In the crystal structure of the title compound, C(20)H(14)FN(5)O(2), the pyrazole ring forms dihedral angles of 59.3?(2), 25.6?(2) and 46.0?(2)° with the directly attached 4-fluoro-phenyl, pyridine and nitro-phenyl rings, respectively. The crystal packing is characterized by inter-molecular N-H?N and N-H?O hydrogen bonds.

SUBMITTER: Abu Thaher B

PROVIDER: S-EPMC3295427 | biostudies-literature | 2012 Mar

REPOSITORIES: biostudies-literature

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4-(4-Fluoro-phen-yl)-1-(4-nitro-phen-yl)-3-(pyridin-4-yl)-1H-pyrazol-5-amine.

Abu Thaher Bassam B Koch Pierre P Schollmeyer Dieter D Laufer Stefan S

Acta crystallographica. Section E, Structure reports online 20120210 Pt 3

In the crystal structure of the title compound, C(20)H(14)FN(5)O(2), the pyrazole ring forms dihedral angles of 59.3 (2), 25.6 (2) and 46.0 (2)° with the directly attached 4-fluoro-phenyl, pyridine and nitro-phenyl rings, respectively. The crystal packing is characterized by inter-molecular N-H⋯N and N-H⋯O hydrogen bonds. ...[more]

PMID: 22412538

Similar Datasets

4-(4-Fluoro-phen-yl)-1-phenyl-3-(pyridin-4-yl)-1H-pyrazol-5-amine.

Project description:In the title compound, C(20)H(15)FN(4), the pyrazole ring forms dihedral angles of 43.51?(6), 39.95?(6) and 32.23?(6)° with the directly attached 4-fluoro-phenyl, pyridine and phenyl rings, respectively. The crystal packing is stabilized by inter-molecular N-H?N and N-H?F hydrogen bonds.

| S-EPMC3295426 | biostudies-literature

4-(4-Fluoro-phen-yl)-3-(pyridin-4-yl)-1-(2,4,6-trichloro-phen-yl)-1H-pyrazol-5-amine.

Project description:In the title compound, C(20)H(12)Cl(3)FN(4), the pyrazole ring forms dihedral angles of 47.51?(9), 47.37?(9) and 74.37?(9)° with the directly attached 4-fluoro-phenyl, pyridine and 2,4,6-trichloro-phenyl rings, respectively. Only one of the two amino H atoms is involved in hydrogen bonding. The crystal packing is characterized by N-H?N hydrogen bonds, which result in infinite chains parallel to the c axis.

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3-tert-Butyl-1-(3-nitro-phen-yl)-1H-pyrazol-5-amine.

Project description:In the title compound, C(13)H(16)N(4)O(2), the pyrazole ring forms a dihedral angle of 50.61?(6)° with the 3-nitro-phenyl ring. The plane of the nitro group is twisted by 6.8?(7)° out of the plane of the phenyl ring. In the crystal, the mol-ecules are linked by N-H?N and N-H?O hydrogen bonds, forming sheets in the bc plane. In addition, a weak C-H?N inter-action is observed.

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4-[5-Amino-4-(4-fluoro-phen-yl)-3-(pyridin-4-yl)-1H-pyrazol-1-yl]benzo-nitrile.

Project description:In the crystal structure of the title compound, C(21)H(14)FN(5), the pyrazole ring forms dihedral angles of 38.0 (1), 40.0 (1) and 28.5 (1)° with the directly attached 4-fluoro-phenyl, pyridine and benzonitrile rings, respectively. The crystal packing is characterized by N-H⋯N hydrogen bonds, which result in a two-dimensional network parallel to the ac-plane.

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N-(3-Chloro-phen-yl)-3-nitro-pyridin-2-amine.

Project description:The dihedral angle between the benzene and pyridyl rings in the title compound, C(11)H(8)ClN(3)O(2), is 22.65?(10)°, indicating a twisted mol-ecule. The amine H and nitro O atoms form a donor-acceptor pair for an intra-molecular N-H?O hydrogen bond so that the nitro group is almost coplanar with the pyridine ring to which it is connected [O-N-C-C torsion angle = 7.4?(3)°]. The pyridine N and Cl atoms are approximately syn. The crystal packing features C-H?Cl inter-actions that lead to undulating supra-molecular chains along [101]. These are connected into sheets by ?-? inter-actions occurring between the benzene rings and between the pyridine rings of translationally related mol-ecules along the b axis [centroid-centroid distances = length of b axis = 3.7157?(2)?Å].

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N-(4-Methyl-phen-yl)-3-nitro-pyridin-2-amine.

Project description:Two independent mol-ecules comprise the asymmetric unit of the title compound, C(12)H(11)N(3)O(2). These differ in terms of the relative orientations of the benzene rings as seen in the respective dihedral angles formed between the pyridine and benzene rings [17.42 (16) and 34.64 (16)°]. Both mol-ecules are twisted about the amine-tolyl N-C bonds [respective torsion angles = 22.3 (5) and 35.9 (5)°] but only about the amine-pyridine N-C bond in the first independent mol-ecule [respective torsion angles = -11.7 (5) and 0.8 (5)°]. Intra-molecular N-H⋯O hydrogen bonds preclude the amine H atoms from forming significant inter-molecular inter-actions. The crystal packing features inter-molecular C-H⋯O and C-H⋯π and π-π [centroid-centroid distance: pyridine-benzene = 3.6442 (19) Å and pyridine-pyridine = 3.722 (2) Å] contacts.

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N-(2-Methyl-phen-yl)-6-(1H-pyrazol-1-yl)pyridazin-3-amine.

Project description:The title compound, C(14)H(13)N(5), crystallizes with two crystallographically independent mol-ecules in the unit cell. The two mol-ecules form dimers through inter-molecular N-H?N and C-H?N hydrogen bonds. The hydrogen-bonding motifs are R(2) (2)(8) for both the N-H?N and C-H?N inter-actions. The pyrazole and pyrimidine rings form dihedral angles of 6.2?(3) and 8.3?(3)° with each other and the dihedral angles between the pyrazole and benzene rings are 54.9?(2) and 58.6?(2)°. The benzene rings of neighbouring dimers also exhibit C-H?? inter-actions.

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4-[3-(4-Fluoro-phen-yl)quinoxalin-2-yl]-N-isopropyl-pyridin-2-amine.

Project description:In the crystal structure of the title compound, C(22)H(19)FN(4), the quinoxaline system makes dihedral angles of 32.07?(13) and 69.64?(13)° with the 4-fluoro-phenyl and pyridine rings, respectively. The 4-fluoro-phenyl ring makes a dihedral angle of 71.77?(16)° with the pyridine ring. The crystal structure is stabilized by inter-molecular N-H?N hydrogen bonding.

| S-EPMC2969533 | biostudies-literature

2-{5-[2-(4-Nitro-phen-oxy)phen-yl]-1-phenyl-1H-pyrazol-3-yl}phenol.

Project description:In the title compound, C(27)H(19)N(3)O(4), the phenol and pyrazole rings are almost coplanar [dihedral angle = 0.95?(12)°] due to an intra-molecular O-H?N hydrogen bond, whereas the phenyl ring is tilted by 40.81?(7)° with respect to the plane of the pyrazole ring. The aromatic ring with a nitro-phen-oxy substituent makes a dihedral angle of 54.10?(7)° with the pyrazole ring.

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3,5-Bis(4-fluoro-phen-yl)-1-(4-nitro-phen-yl)-4,5-dihydro-1H-pyrazole.

Project description:In the title compound, C(21)H(15)F(2)N(3)O(2), a pyrazole derivative bearing three aromatic substituents, the central five-membered heterocyclic ring makes dihedral angles of 1.77?(14), 3.68?(13) and 72.15?(14)° with the three benzene rings. In the crystal, C-H?O and C-H?F inter-actions connect the mol-ecules into double layers parallel to the bc plane.

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