1,5-Dimethyl-4-[(E)-3-phenoxybenzylideneamino]-2-phenyl-1H-pyrazol-3(2H)-one

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(E)-4-(4-Hydr­oxy-3-nitro­benzyl­idene­amino)-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one

In the title compound, C(18)H(16)N(4)O(4), the dihedral angles between the central pyrazole ring and the pendant substituted and unsubstituted aromatic rings are 4.73 (12) and 44.24 (14)°, respectively. An intra-molecular O-H⋯O hydrogen bond occurs. In the crystal structure, an inter-molecular C-H⋯O inter-action may help to consolidate the packing and a short intra-molecular C-H⋯O contact also ...

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(E)-1,5-Dimethyl-4-[3-(4-nitro­benz­yloxy)benzyl­ideneamino]-2-phenyl-1H-pyrazol-3(2H)-one

In the title compound, C(25)H(22)N(4)O(4), the central benzene ring, makes dihedral angles of 74.35 (6), 17.01 (8) and 62.19 (7)°, respectively, with the nitro-benzyl ring, the pyrazolone ring and the terminal phenyl ring. Inter-molecular C-H⋯O hydrogen bonds help to consolidate the crystal packing.

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4-{(E)-[2-(4-Iodo­but­oxy)benzyl­idene]amino}-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one

The title Schiff base compound, C(22)H(24)IN(3)O(2), adopts an E configuration about the central C=N bond. The pyrazolone ring makes a dihedral angle of 49.68 (10)° with its attached phenyl ring. The phenolate plane makes dihedral angles of 16.78 (9) and 50.54 (9)°, respectively, with the pyrazolone ring and the terminal phenyl ring. An intra-molecular C-H⋯O hydrogen bond generates an S(6) ring...

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4-[(E)-(4-Diethyl­amino-2-hy­droxy­benzyl­idene)amino]-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one

In the title compound, C(22)H(26)N(4)O(2), the phenyl ring and hy-droxy-benzene group are twisted with respect to the central pyrazolone ring, making dihedral angles of 54.05 (5) and 21.80 (6)°, respectively. One of the ethyl groups is disordered over two positions with site occupancies of 0.872 (6) and 0.128 (6). The mol-ecular structure features short intra-molecular O-H⋯N and C-H⋯O contacts....

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1,5-Dimethyl-4-[(E)-3-phenoxy­benzyl­ideneamino]-2-phenyl-1H-pyrazol-3(2H)-one

The title Schiff base, C(24)H(21)N(3)O(2), adopts an E configuration with respect to the central C=N bond. The pyrazole ring and the central benzene ring attached to the imino group are almost coplanar. The phenyl ring attached to the pyrazole unit is twisted by 39.3 (2)° with respect to the pyrazole ring plane. The phen-oxy benzene ring makes a dihedral angle of 79.8 (2)° with the central benz...

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ژورنال

عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online

سال: 2008

ISSN: 1600-5368

DOI: 10.1107/s1600536808024409