A second monoclinic polymorph of 4-[(E)-(4-benzyloxybenzylidene)amino]-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one
نویسندگان
چکیده
In the title compound, C25H23N3O2, the central benzene ring makes dihedral angles of 77.14 (8) and 87.7 (2)° with the terminal benzene rings and an angle of 1.9 (1)° with the pyrazolone ring. The benzene ring and the N atom of the pyrazole ring bearing the phenyl substituent are disordered over two sets of sites with an occupancy ratio of 0.71 (2):0.29 (2). The N atoms of the pyrazole ring have a pyramidal environment, the sums of the valence angles around them being 354.6 (3) and 352.0 (6)/349.5 (15)°. In the crystal, mol-ecules are packed into layers parallel to the ac plane. The other monoclinic polymorphic form was reported recently [Dutkiewicz et al. (2012 ▶). Acta Cryst. E68, o1324].
منابع مشابه
A second monoclinic polymorph of 4-(2-hydroxy-4-methoxybenzylideneamino)-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one
The title compound, C(19)H(19)N(3)O(3), prepared by condensing 4-amino-anti-pyrine and 4-meth-oxy-2-hydroxy-benzaldehyde in methanol, is the second monoclinic polymorph of this compound which crystallizes in the space group C2/c. The structure was previously reported [Wang, Zhang, Yan, Zheng & Yang (2007 ▶). Acta Cryst. E63, o1245-o1246] in the space group P2(1)/c. The hydroxyl group is disorde...
متن کامل4-[(4-Benzyloxybenzylidene)amino]-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one
In the title mol-ecule, C(25)H(23)N(3)O(2), two terminal phenyl rings are twisted by 50.20 (6) and 71.26 (5)° from the mean plane (r.m.s. deviation = 0.032 Å) of the central benzyl-idene-amino-pyrazolone fragment. The N atoms of the pyrazole ring have a pyramidal environment, the sums of the valence angles around them being 353.5 (2) and 347.3 (2)°. The crystal structure is stabilized by C-H⋯O ...
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متن کامل4-{[(E)-(3,5-Dimethyl-1-phenyl-1H-pyrazol-4-yl)methylidene]amino}-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one
The title Schiff base compound, C(23)H(23)N(5)O, was synthesized by the reaction of 4-amino-phenazone and 3,5-dimethyl-1-phenyl-pyrazole-4-carbaxaldehyde. The mol-ecule adopts an E configuration about the central C=N double bond. A weak intra-molecular C-H⋯O hydrogen bond generates an S(6) ring motif. The dihedral angle between the pyrazole rings is 24.72 (10)° and the dihedral angles between t...
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عنوان ژورنال:
دوره 69 شماره
صفحات -
تاریخ انتشار 2013