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2-((Z)-{3-[(Z)-(2-Hy-droxy-5-methyl-benzyl-idene)amino]-2,2-dimethyl-prop-yl}imino-meth-yl)-4-methyl-phenol.

ABSTRACT: In the title compound, C(21)H(26)N(2)O(2), the dihedral angle between the two benzene rings is 73.47?(16)°. Strong intra-molecular O-H?N hydrogen bonds generate S(6) ring motifs. The substituted benzene rings are twisted around the central quaternary C atom in opposite directions, making a vault geometry.

SUBMITTER: Kia R

PROVIDER: S-EPMC3050403 | biostudies-literature | 2010 Dec

REPOSITORIES: biostudies-literature

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2-((Z)-{3-[(Z)-(2-Hy-droxy-5-methyl-benzyl-idene)amino]-2,2-dimethyl-prop-yl}imino-meth-yl)-4-methyl-phenol.

Kia Reza R Kargar Hadi H Mirkhani Valiollah V Ganji Fatemeh F Tahir Muhammad Nawaz MN

Acta crystallographica. Section E, Structure reports online 20101215 Pt 1

In the title compound, C(21)H(26)N(2)O(2), the dihedral angle between the two benzene rings is 73.47 (16)°. Strong intra-molecular O-H⋯N hydrogen bonds generate S(6) ring motifs. The substituted benzene rings are twisted around the central quaternary C atom in opposite directions, making a vault geometry. ...[more]

PMID: 21522641

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2-((E)-{3-[(E)-2-Hy-droxy-3,5-diiodo-benzyl-idene-amino]-2,2-dimethyl-prop-yl}imino-meth-yl)-4,6-diiodo-phenol.

Project description:The asymmetric unit of the title compound, C(19)H(18)I(4)N(2)O(2), comprises a potentially tetra-dentate Schiff base ligand. The disordered H atoms on the N and O atoms were refined with site occupancies of 0.54?(8)/0.46?(8) and 0.59?(7)/0.41?(7), respectively. The dihedral angle between the benzene rings is 73.3?(3)°. Intra-molecular O-H?N and N-H?O hydrogen bonds make S(6) ring motifs. Short I?I [3.8919?(7)?Å] and I?Cg [Cg is a ring centroid; 3.911?(2)?Å] contacts are present in the crystal structure. The crystal structure is further stabilized by inter-molecular ?-? inter-actions [centroid-to-centroid distance = 3.827?(3)?Å].

| S-EPMC3297293 | biostudies-literature

2-{(1E)-1-[(3-{(E)-[1-(2-Hy-droxy-4-meth-oxy-phen-yl)ethyl-idene]amino}-2,2-di-methyl-prop-yl)imino]-eth-yl}-5-meth-oxy-phenol.

Project description:Mol-ecules of the title compound, C(23)H(30)N(2)O(4), are located on a crystallographic mirror plane. The mol-ecule has a curved shape with the dihedral angle formed between the two benzene rings being 55.26?(5)°. Intra-molecular O-H?N hydrogen bonds are noted. In the crystal, supra-molecular layers are formed in the ac plane owing to the presence of C-H?? inter-actions.

| S-EPMC3201500 | biostudies-literature

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

Project description:In the title compound, C(19)H(18)Cl(4)N(2)O(2), a potential tetra-dentate Schiff base ligand, the dihedral angle between the two benzene rings is 48.01?(10)°. The configuration about the two C=N bonds is E and two intra-molecular O-H?N hydrogen bonds make S(6) ring motifs. In the crystal, mol-ecules are linked along the b axis via inter-molecular C-H?Cl inter-actions. The crystal structure is further stabilized by an inter-molecular ?-? inter-action [centroid-centroid distance = 3.5744?(12)?Å].

| S-EPMC3254485 | biostudies-other

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

Project description:The title mol-ecule, C(16)H(12)Cl(4)N(2)O(2), lies about an inversion center. The symmetry-unique part of the mol-ecule contains an intra-molecular O-H?N hydrogen bond. In the crystal, mol-ecules are arranged in corrugated layers parallel to (-101). Weak ?-? stacking inter-actions, with a centroid-centroid diatance of 3.7923?(13)?Å, are present.

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2-{[(4-{[(2-Hy-droxy-phen-yl)(phen-yl)methyl-idene]amino}-but-yl)imino](phen-yl)meth-yl}phenol.

Project description:The asymmetric unit of the title compound, C(30)H(28)N(2)O(2), comprises half of a potential tetra-dentate Schiff base ligand; an inversion centre is situtated at the center of the butane-diamine spacer. The central methyl-ene segment of the diamine spacer is disordered over two positions with a refined site-occupancy ratio of 0.651 (7):0.349 (7). The phenyl ring and the hy-droxy-substituted benzene ring are almost perpendicular to each other, with a dihedral angle of 87.90 (8) Å. Intra-molecular O-H⋯N hydrogen bonds make S(6) ring motifs.

| S-EPMC3274985 | biostudies-literature

Bis-{(E)-3-[2-(hy-droxy-imino)-propan-amido]-2,2-dimethyl-propan-1-aminium} bis[?-(E)-N-(3-amino-2,2-dimethyl-prop-yl)-2-(hy-droxy-imino)-propanamido-(2-)]bis-{[(E)-N-(3-amino-2,2-dimethyl-prop-yl)-2-(hy-droxy-imino)-propanamide]-copper(II)} bis-((E)-{3-[2-(hy-droxy-imino)-propanamido]-2,2-dimethyl-prop-yl}carbamate) acetonitrile disolvate.

Project description:The reaction between copper(II) nitrate and (E)-N-(3-amino-2,2-dimethyl-prop-yl)-2-(hy-droxy-imino)-propanamide led to the formation of the dinuclear centrosymmetric copper(II) title complex, (C8H18N3O2)2[Cu2(C8H15N3O2)2(C8H17N3O2)2](C9H16N3O4)2·2CH3CN, in which an inversion center is located at the midpoint of the Cu2 unit in the center of the neutral [Cu2(C8H15N3O2)2(C8H17N3O2)2] complex fragment. The Cu(2+) ions are connected by two N-O bridging groups [Cu?Cu separation = 4.0608?(5)?Å] while the Cu(II) ions are five-coordinated in a square-pyramidal N4O coordination environment. The complex mol-ecule co-crystallizes with two mol-ecules of acetonitrile, two mol-ecules of the protonated ligand (E)-3-[2-(hy-droxy-imino)-propanamido]-2,2-dimethyl-propan-1-aminium and two negatively charged (E)-{3-[2-(hy-droxy-imino)-propanamido]-2,2-dimethyl-prop-yl}carbamate anions, which were probably formed as a result of condensation between (E)-N-(3-amino-2,2-dimethyl-prop-yl)-2-(hy-droxy-imino)-propanamide and hydro-gencarbonate anions. In the crystal, the complex fragment [Cu2(C8H15N3O2)2(C8H17N3O2)2] and the ion pair C8H18N3O2(+.)C9H16N3O4(-) are connected via an extended system of hydrogen bonds.

| S-EPMC3588739 | biostudies-literature

2-[({2-[(2-Hy-droxy-5-meth-oxy-benzyl-idene)amino]-eth-yl}imino)-meth-yl]-4-meth-oxy-phenol.

Project description:The asymmetric unit of the title compound, C(18)H(20)N(2)O(4), contains one-half mol-ecule with an inversion center located at the centroid of the mol-ecule. In the crystal, mol-ecules are linked by C-H?? inter-actions, forming layers parallel to (101). An intra-molecular O-H?N hydrogen bond also occurs.

| S-EPMC3379345 | biostudies-literature

2-Eth-oxy-6-({2-[(3-eth-oxy-2-hy-droxy-benzyl-idene)amino]-benz-yl}imino-meth-yl)phenol.

Project description:The title compound, C(25)H(26)N(2)O(4), exists in an E conformation with respect to each azomethine link. The two phenol-substituted benzene rings are twisted away from the plane of the diimine benzene ring by dihedral angles of 27.25 (5) and 56.67 (5)°. The mol-ecular structure is stabilized by intra-molecular O-H⋯N hydrogen bonds.

| S-EPMC3414937 | biostudies-literature

2-[1-(3-{2-[(2-Hy-droxy-benzyl-idene)amino]-phen-oxy}prop-yl)-1H-1,3-benzodiazol-2-yl]phenol.

Project description:In the title compound, C(29)H(25)N(3)O(3), the imine double bond has an E configuration. The dihedral angle between the hy-droxy-phenyl and benzene rings in the imine moiety is 26.95?(9)°, and the dihedral angle between the hy-droxy-phenyl and benzimidazole rings in the other moiety is 14.83?(9)°. These angles are probably limited to small values as a consequence of two strong intra-molecular O-H?N hydrogen bonds formed between the hy-droxy groups and the imine and imidazole N atoms. The aliphatic chain linking the two ring systems has a gauche conformation, as reflected in C-C-C-O torsion angle of 70.9?(2)°.

| S-EPMC3052110 | biostudies-literature

N'-(2-Hy-droxy-benzyl-idene)-2-(hy-droxy-imino)-propano-hydrazide.

Project description:The mol-ecule of the title compound, C(10)H(11)N(3)O(3), adopts an all-trans conformation and is approxomately planar, the largest deviation from the least-squares plane through all non-H atoms being 0.261 (1) Å. An intra-molecular O-H⋯N hydrogen bond occurs. In the crystal, the mol-ecules are packed into layers lying parallel to the ab plane by π-stacking inter-actions between the benzene ring of one molecule and the C-N bond of the oxime group of another molecule; the shortest inter-molecular C⋯C separation within the layer is 3.412 (1) Å. The layers are connected by O-H⋯O and N-H⋯O hydrogen bonds.

| S-EPMC3238939 | biostudies-literature

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