IR-spectral study of photoinduced tautomerization in 1,3-diphenyl-pyrazol-5-one
نویسندگان
چکیده
منابع مشابه
1,3-Diphenyl-4,5-dihydro-1H-pyrazol-5-one
In the title pyrazolone derivative, C(15)H(12)N(2)O, the five-membered ring is approximately planar (r.m.s. deviation = 0.018 Å), and the N- and C-bound benzene rings are inclined to this plane [dihedral angles = 21.45 (10) and 6.96 (10)°, respectively] and form a dihedral angle of 20.42 (10)° with each other. Supra-molecular layers are formed in the crystal structure via C-H⋯O and C-H⋯N inter-...
متن کامل4-(1,3-Diphenyl-4,5-dihydro-1H-pyrazol-5-yl)-1,3-diphenyl-1H-pyrazole
The title compound, C(30)H(24)N(4), contains two pyrazole rings and four phenyl rings. The pyrazole rings are essentially planar, with maximum deviations of 0.003 (1) and 0.066 (1) Å and make a dihedral angle of 73.43 (6)°. The two pyrazole rings make dihedral angles of 40.08 (6), 9.28 (6), 15.78 (8) and 17.25 (7)° with their attached phenyl rings. In the crystal, there are no significant inter...
متن کامل(E,E)-3,3′-Dimethyl-1,1′-diphenyl-4,4′-{(ethane-1,2-diyldiimino)bis[(2-furyl)methylidyne]}di-1H-pyrazol-5(4H)-one
The complete molecule of the title compound of the title compound, C(32)H(28)N(6)O(4), is generated by crystallographic inversion symmetry. The dihedral angles between the pyrazalone ring and the pendant phenyl and furan rings are 15.65 (8) and 65.06 (8)°, respectively. In the crystal, the molecules are linked by N-H⋯O, C-H⋯O and weak C-H⋯π interactions.
متن کامل(E,E)-3,3′-Dimethyl-1,1′-diphenyl-4,4′-{[3-azapentane-1,5-diylbis(azanediyl)]bis(phenylmethylidyne)}di-1H-pyrazol-5(4H)-one
The asymmetric unit of the title compound, C(38)H(37)N(7)O(2), contains one half-mol-ecule, situated on a twofold rotational axis, in which one amino group is involved in intra-molecular N-H⋯O hydrogen bond and the two phenyl rings are twisted from the plane of pyrazolone ring by 26.69 (10) and 79.64 (8)°. The crystal packing exhibits no classical inter-molecular contacts.
متن کامل5-Cyclohexyl-4-methyl-1H-pyrazol-3(2H)-one monohydrate
In the title compound, C(10)H(16)N(2)O·H(2)O, the cyclo-hexane ring is in a chair conformation and its least-squares plane makes a dihedral angle of 53.68 (5)° with the approximately planar pyrazole ring [maximum deviation = 0.034 (1) Å]. Pairs of inter-molecular N-H⋯O hydrogen bonds form inversion dimers between neighbouring pyrazolone mol-ecules, generating R(2) (2)(8) ring motifs. The pyrazo...
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ژورنال
عنوان ژورنال: Open Chemistry
سال: 2003
ISSN: 2391-5420
DOI: 10.2478/bf02475222