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(3,5-Di-tert-butyl-2-eth-oxy-benzyl-idene)[2-(3,5-di-tert-butyl-1H-pyrazol-1-yl)eth-yl]amine.

ABSTRACT: The angles within the benzene ring in the title compound, C(30)H(49)N(3)O, ranging from 116.34 (16) to 124.18 (16)°, reflect the presence of electron-donating and electron-withdrawing substituents. The angles at the two electron-donating tert-butyl substituents are smaller than 120°, at the electron-withdrawing eth-oxy substituent larger than 120°, and at the imine substituent equal to 119.59 (16)°. The latter does not reflect the electron-donating nature of the imine group due to the presence of other substituents.

SUBMITTER: Spencer LC

PROVIDER: S-EPMC3414966 | biostudies-literature |

REPOSITORIES: biostudies-literature

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(E)-2-[(3,5-Di-tert-butyl-2-hydroxy-benzyl-idene)amino]benzonitrile.

Project description:The asymmetric unit of the title compound, C(22)H(26)N(2)O, contains three crystallographically independent mol-ecules, in which the aromatic rings are oriented at dihedral angles of 21.74?(5), 27.59?(5) and 27.87?(5)°. Intra-molecular O-H?N hydrogen bonds result in the formation of planar six-membered rings, and these are nearly coplanar with the adjacent rings. In the crystal structure, ?-? contacts between the benzene rings [centroid-centroid distances = 3.989?(2), 3.802?(1) and 3.882?(1)?Å] may stabilize the structure.

| S-EPMC2969623 | biostudies-literature

3-[(3,5-Di-tert-butyl-2-hydroxy-benzyl-idene)methyl-eneamino]benzonitrile.

Project description:The mol-ecule of the title compound, C(22)H(26)N(2)O, displays a trans configuration with respect to the C=N double bond. The dihedral angle between the planes of the two aromatic rings is 26.30 (15)°. There is a strong intra-molecular O-H⋯N hydrogen bond between the imine and hydroxyl groups.

| S-EPMC2977811 | biostudies-literature

Di-n-butyl-ammonium 2-(3,5-di-tert-butyl-4-hydroxy-benzyl-sulfan-yl)nicotinate.

Project description:The asymmetric unit of the title compound, C(8)H(20)N(+)·C(21)H(26)NO(3)S(-), contains two indpendent ion pairs which are disposed about a psuedo-inversion center, generating an ammonium-carboxylate N-H?O hydrogen-bonded four-component cluster. In the crystal structure, adjacent clusters are linked by hydr-oxy-carboxylate O-H?O hydrogen bonds, forming a chain.

| S-EPMC2960651 | biostudies-literature

2,4-Di-tert-butyl-6-[1-(3,5-di-tert-butyl-2-hydroxy-phen-yl)eth-yl]phenyl 4-methyl-benzene-sulfonate.

Project description:The title compound, C(37)H(52)O(4)S, was obtained by the reaction of 6,6'-(ethane-1,1-di-yl)bis-(2,4-di-tert-butyl-phenol) and 4-methyl-benzene-1-sulfonyl chloride. The mol-ecular conformation is stabilized by an intra-molecular O-H?O hydrogen bond. Two of the tert-butyl groups are disordered over two sets of sites with occupancies 0.530?(15)/0.470?(15) and 0.615?(11)/0.385?(11).

| S-EPMC2968069 | biostudies-literature

Ethyl 4-[(3,5-di-tert-butyl-2-hy-droxy-benzyl-idene)-amino]-benzoate.

Project description:The title compound, a Schiff base, C(24)H(31)NO(3), has a substituted aromatic ring at both ends of the azomethine linkage and these make a dihedral angle of 24.9?(1)°. There is an intra-molecular hydrogen bond between the hy-droxy group (donor) and the N atom of themazomethine linkage.

| S-EPMC3009105 | biostudies-literature

2-(3,5-Di-tert-butyl-4-hydroxy-benzyl-sulfan-yl)nicotinic acid.

Project description:Two mol-ecules of the title compound, C(21)H(27)NO(3)S, are disposed about a center of inversion, generating an O-H⋯O hydrogen-bonded dimer.

| S-EPMC2960523 | biostudies-literature

N'-(3,5-Di-tert-butyl-4-hydroxy-benzyl-idene)-2-hydroxy-benzohydrazide methanol solvate.

Project description:The asymmetric unit of the title compound, C(22)H(28)N(2)O(3)·CH(4)O, consists of two independent Schiff base mol-ecules and two independent methanol solvent mol-ecules. In one Schiff base mol-ecule, the 2-hydr-oxy group forms an intra-molecular hydrogen bond with the amide O atom, whereas in the other Schiff base mol-ecule, the 2-hydr-oxy-substituted benzene ring is oriented so that the 2-hydr-oxy group serves as hydrogen-bond acceptor for the amide NH group. In the crystal structure, Schiff base mol-ecules inter-act with methanol solvent to furnish a hydrogen-bonded chain.

| S-EPMC2962083 | biostudies-literature

2-(3,5-Di-tert-butyl-4-hydroxy-benzyl-sulfan-yl)-N'-(3-methoxy-benzyl-idene)acetohydrazide.

Project description:The title compound, C(25)H(34)N(2)O(3)S, is a derivative of N'-benzyl-ideneacetohydrazide having substituents on the acetyl and benzylidenyl parts, and displays a planar C(carbon-yl)-NH-NC(anis-yl) fragment [torsion angle = 174.9?(3)°]. The -NH- unit forms an N-H?O hydrogen bond with the carbonyl O atom of an inversion-related mol-ecule.

| S-EPMC2970103 | biostudies-other

(2,4-Di-chloro-benzyl-idene)[2-(1<i>H</i>-indol-3-yl)eth-yl]amine.

Project description:In the title compound, C17H14Cl2N2, the mol-ecule exists in an E configuration with respect to the C=N bond of the Schiff base fragment. The dihedral angle between the indole ring system and the benzene ring is 80.86 (12)°. In the crystal, mol-ecules are connected by N-H⋯N hydrogen bonds, generating a C(7) chain extending along the a-axis direction. No aromatic π-π stacking occurs but weak C-H⋯π inter-actions are observed.

| S-EPMC10561229 | biostudies-literature

7-[(3,5-Di-tert-butyl-2-hy-droxy-benzyl-idene)amino]-4-methyl-2H-chromen-2-one.

Project description:The title compound, C(25)H(29)NO(3), is a Schiff base derivative of coumarin 120. There are two structurally similar but crystallographically independent mol-ecules in the asymmetric unit. Both mol-ecules exist in E configurations with respect to the C=N double bonds. The dihedral angles between the coumarin and 3,5-di-tert-butyl-2-hy-droxy-benzyl-idene ring planes are 4.62 (7) and 14.62 (7)° for the two mol-ecules. Intra-molecular O-H⋯N hydrogen bonding involving the O-H groups and the azomethine N atoms generate S(6) rings. In the crystal structure, independent mol-ecules are linked by C-H⋯π inter-actions, with groups of four mol-ecules stacked along the c axis.

| S-EPMC2983148 | biostudies-literature

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