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

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Atıf İçin Kopyala

Hokelek T., ISIKLAN M., KILIC Z.

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, cilt.57, ss.117-119, 2001 (SCI-Expanded)

• Yayın Türü: Makale / Tam Makale
• Cilt numarası: 57
• Basım Tarihi: 2001
• Doi Numarası: 10.1107/s0108270100015535
• Dergi Adı: ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
• Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Sayfa Sayıları: ss.117-119
• Hacettepe Üniversitesi Adresli: Evet

Özet

In the title compound, C18H17N3O2, a strong intramolecular O-H . . .N hydrogen bond [N . . .O 2.607 (3), O-H 0.97 (3) and H . . .N 1.71 (3) Angstrom, and O-H . . .N 153 (2)degrees] was observed, which leads to a unique phenol-imine tautomerism in the solid state. The C=N imine bond distance and the C-N-C bond angle [1.287 (2) Angstrom and 121.7 (1)degrees, respectively] indicate the existence of this phenol-imine tautomer. In solution, the phenol-imine tautomer of the title free Schiff base ligand is dominant in both polar and non-polar solvents, as supported by H-1 NMR and UV-visible spectroscopic data.