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(E)-2-{[(2-Amino-pyridin-3-yl)imino]-meth-yl}-4,6-di-tert-butyl-phenol.

ABSTRACT: In the title compound, C(20)H(27)N(3)O, the hy-droxy group forms an intra-molecular O-H⋯N hydrogen bond with the imino N atom. The dihedral angle between the aromatic rings is 33.09 (9)°. In the crystal, mol-ecules form centrosymmetric dimers via pairs of N-H⋯N hydrogen bonds involving amino-pyridine fragments.

SUBMITTER: Carreno A

PROVIDER: S-EPMC3414959 | biostudies-literature | 2012 Aug

REPOSITORIES: biostudies-literature

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(E)-2-{[(2-Amino-pyridin-3-yl)imino]-meth-yl}-4,6-di-tert-butyl-phenol.

Carreño Alexander A Ladeira Sonia S Castel Annie A Vega Andres A Chavez Ivonne I

Acta crystallographica. Section E, Structure reports online 20120721 Pt 8

In the title compound, C(20)H(27)N(3)O, the hy-droxy group forms an intra-molecular O-H⋯N hydrogen bond with the imino N atom. The dihedral angle between the aromatic rings is 33.09 (9)°. In the crystal, mol-ecules form centrosymmetric dimers via pairs of N-H⋯N hydrogen bonds involving amino-pyridine fragments. ...[more]

PMID: 22904946

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(E)-2-[(2-Amino-phen-yl)imino-meth-yl]-4,6-di-tert-butyl-phenol.

Project description:In the title compound, C(21)H(28)N(2)O, the dihedral angle between the rings is 35.2?(2)°. A weak intra-molecular O-H?N hydrogen bond is observed between the O-H H atom and the imine N atom. In the crystal, mol-ecules are linked by additional inter-molecular N-H?O hydrogen bonding, resulting in a wave-like chain along the b-axis direction.

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2-Bromo-4-tert-butyl-6-[(pyridin-2-yl-imino)-meth-yl]phenol.

Project description:In the title compound, C(16)H(17)BrN(2)O, the pyridine and benzene rings are almost coplanar [dihedral angle = 1.3 (2)°]. An intra-molecular O-H⋯Br inter-action forms an S(5) ring motif.

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2,6-Di-tert-butyl-4-(dimethyl-amino-meth-yl)phenol.

Project description:The title compound, C(17)H(29)NO, is an important hindered phenol derivative. The asymmetric unit contains two mol-ecules. Molecules inter-act through O-H⋯N hydrogen bonds to form a tetramer arranged around a twofold rotation axis.

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2,6-Di-tert-butyl-4-(methoxy-meth-yl)phenol.

Project description:The title compound, C(16)H(26)O(2), was easily obtained in high yield when 4-bromo-methyl-2,6-di-tert-butyl-phenol was reacted with methanol. There are two independent mol-ecules in the asymmetric unit. The meth-oxy group in each of the independent mol-ecules was found to be disordered, with site-occupation factors of 0.8728?(18)/0.1272?(18) and 0.8781?(17)/0.1219?(17).

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(E)-2-tert-Butyl-6-[(naphthalen-1-yl)imino-meth-yl]phenol.

Project description:The asymmetric unit of the title Schiff base compound, C(21)H(21)NO, contains two crystallographicaly independent mol-ecules. The dihedral angles between the naphthalene mean plane and the benzene ring are 29.28?(8) and 26.92.(8)° in the two mol-ecules. An intra-molecular O-H?N hydrogen bond and weak intra-molecular C-H?O hydrogen bonds stabilize the structure of each independent mol-ecule.

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2,4-Di-tert-butyl-6-({[2-(di-methyl-amino)-eth-yl](2-hy-droxy-benz-yl)amino}-meth-yl)phenol.

Project description:The title compound, C26H40N2O2, has both its N atoms in trigonal-pyramidal geometries. The mol-ecular structure is stabilized by O-H?N and C-H?O hydrogen bonds. In the crystal, C-H?? inter-actions lead to the formation of a supramolecular helical chain along the b-axis direction.

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2,6-Di-tert-butyl-4-[(N-methyl-anilino)meth-yl]phenol.

Project description:The title compound, C(22)H(31)NO, has been synthesized from 4-bromo-methyl-2,6-di-tert-butyl-phenol and N-methyl-aniline. There are two independent mol-ecules in the asymmetric unit. The aniline ring in each of the independent mol-ecules was found to be disordered, with site occupation factors 0.621 (10)/0.379 (10) and 0.605 (10)/0.395 (10).

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Project description:The title compound, C23H28F3NO, is an ortho-hy-droxy Schiff base compound, which adopts the enol-imine tautomeric form in the solid state. The mol-ecular structure is not planar and the dihedral angle between the planes of the aromatic rings is 85.52?(10)°. The tri-fluoro-methyl group shows rotational disorder over two sites, with occupancies of 0.798?(6) and 0.202?(6). An intra-molecular O-H?N hydrogen bonding generates an S(6) ring motif. The crystal structure is consolidated by C-H?? inter-actions. The mol-ecular structure was optimized via density functional theory (DFT) methods with the B3LYP functional and LanL2DZ basis set. The theoretical structure is in good agreement with the experimental data. The frontier orbitals and mol-ecular electrostatic potential map were also examined by DFT computations.

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(E)-4-tert-Butyl-2-(2,6-diisopropyl-phenyl-imino-meth-yl)-6-(morpholinometh-yl)phenol.

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4,6-Dichloro-2-((E)-{4-[(E)-3,5-dichloro-2-hy-droxy-benzyl-idene-amino]-butyl-imino}-meth-yl)phenol.

Project description:The asymmetric unit of the title compound, C(18)H(16)Cl(4)N(2)O(2), comprises half of a potentially tetra-dentate Schiff base ligand. It is located about a twofold rotation axis that bis-ects the central C-C bond of the butane-1,4-diamine group. There are two intra-molecular O-H⋯N hydrogen bonds making S(6) ring motifs. In the crystal, mol-ecules are linked by pairs of weak C-H⋯Cl inter-actions, forming inversion dimers, which are further connected by C-H⋯O hydrogen bonds into two-dimensional frameworks that lie parallel to (001).

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