(E)-4-Meth­oxy-2-(p-tolyl­imino­meth­yl)phenol

The mol­ecule of the title compound, C15H15NO2, adopts the enol–imine tautomeric form and has a strong intra­molecular O—H⋯N hydrogen bond as a result. The mol­ecule is almost planar, with a maximum deviation of 0.1038 (15) Å for the meth­oxy C atom. A weak C—H⋯π inter­action and a weak C—H⋯O hydrogen bond are present in the crystal

(E)-5-Meth­oxy-2-(o-tolyl­imino­meth­yl)phenol

In the title compound, C15H15NO2, the phenol group make dihedral angles of 2.4 (2) and 24.1 (9)° with the imine linkage (–C=N–) and the phenyl group, respectively, and the mol­ecule adopts the enol–imine tautomeric form, so the mol­ecular structure is stabilized by a strong intra­molecular O—H⋯N hydrogen bond. The crystal structure features a weak C—H⋯π inter­action

2-[(4-Chloro­phen­yl)imino­meth­yl]hydro­quinone

The title compound, C13H10ClNO2, exists in the phenol–imine form in the crystal, and the aromatic rings are oriented at a dihedral angle of 2.82 (9)°. An intra­molecular O—H⋯N hydrogen bond results in the formation of a planar six-membered ring. In the crystal structure, inter­molecular O—H⋯O hydrogen bonds link the mol­ecules into chains

5-Diethyl­amino-2-[(E)-(4-eth­oxy­phen­yl)imino­meth­yl]phenol

The title compound, C19H24N2O2, adopts the phenol–imine tautomeric form. An intra­molecular O—H⋯N hydrogen bond results in the formation of a six-membered ring. The aromatic rings are oriented at a dihedral angle of 17.33 (16)°. Inter­molecular C—H⋯π inter­actions occur in the crystal

Crystal Structure Of 1-[N-(6-Methyl-2-Pyridyl)Aminomethylidene] 2(1H)-Naphthalenone

WoSScopu

Synthesis, crystal structure and computational studies of a new Schiff base compound: (E)-4-bromo-2-ethoxy-6-{[(2-methoxyphenyl)-imino]methyl}phenol

YILDIRIM, ARZU OZEK/0000-0002-2185-7009WOS: 000426268200011PubMed: 29765714The title compound, C16H16BrNO3, which shows enol-imine tautomerism, crystallizes in the monoclinic P2(1)/ c space group. All non-H atoms of the molecule are nearly coplanar, with a maximum deviation of 0.274 ( 3) angstrom. In the crystal, molecules are held together by weak C-H center dot center dot center dot O, pi-pi and C-H center dot center dot center dot pi interactions. The E/Z isomerism and enol/keto tautomerism energy barriers of the compound have been calculated by relaxed potential energy surface scan calculations with DFT methods. To observe the changes in the aromatic ring, HOMA aromaticity indexes were calculated during the scan process. Total energy and HOMA change curves were obtained to visualize results of the scan calculations.Giresun UniversityGiresun University [FEN-BAP-A-250414-75]Funding for this research was provided by: Giresun University (FEN-BAP-A-250414-75)

(E)-2-[(2-Ethylphenyl)iminomethyl]-6-methoxyphenol

The molecule of the title compound, C16H17NO2, adopts the phenol–imine tautomeric form with a strong intramolecular O—H...N hydrogen bond and an E conformation with respect to the azomethine C=N bond. The dihedral angle between the aromatic rings is 21.23 (9)°. The ethyl group is disordered over two orientations with occupancies of 0.598 (6) and 0.402 (6). In the crystal, the molecules are linked into chains along the b axis by C—H...π interactions