Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

A second monoclinic polymorph of 3,5-di-tert-butyl-2-hy-droxy-benzaldehyde.

ABSTRACT: In the title mol-ecule, C15H22O2, there is an intra-molecular hydrogen bond involving the hy-droxy and aldehyde groups and forming an S(6) ring. The mean plane of the non-H atoms of this ring [(H)O-C C-C=O, with a maximum deviation of 0.013?(1)?Å] are essentially coplanar with the benzene ring, forming a dihedral angle of 2.29?(8)°.

SUBMITTER: Ng SW

PROVIDER: S-EPMC3884484 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Publications

A second monoclinic polymorph of 3,5-di-tert-butyl-2-hy-droxy-benzaldehyde.

Ng Seik Weng SW

Acta crystallographica. Section E, Structure reports online 20130814 Pt 9

In the title mol-ecule, C15H22O2, there is an intra-molecular hydrogen bond involving the hy-droxy and aldehyde groups and forming an S(6) ring. The mean plane of the non-H atoms of this ring [(H)O-C C-C=O, with a maximum deviation of 0.013 (1) Å] are essentially coplanar with the benzene ring, forming a dihedral angle of 2.29 (8)°. ...[more]

PMID: 24427059

Similar Datasets

Phenyl 3,5-di-tert-butyl-2-hy-droxy-benzoate.

Project description:The title mol-ecule, C(21)H(26)O(3), has a six-membered planar carbon ring as the central core, substituted at position 1 with phen-oxy-carbonyl, at position 2 with hy-droxy and at positions 3 and 5 with tert-butyl groups. The structure shows two independent but very similar mol-ecules within the asymmetric unit. For both independent mol-ecules, the ester carboxyl-ate group is coplanar with the central core, as reflected by the small C-C-O-C torsion angles [179.95?(17) and 173.70?(17)°]. In contrast, the phenyl substituent is almost perpendicular to the carboxyl-ate -CO(2) fragment, as reflected by C-O-C-C torsion angles, ranging from 74 to 80°. The coplanarity between the central aromatic ring and the ester carboxyl-ate -CO(2)- group allows the formation of an intra-molecular hydrogen bond, with O?O distances of 2.563?(2) and 2.604?(2)?Å.

| S-EPMC3011503 | biostudies-literature

Di-n-butyl-ammonium 2-[(3,5-di-tert-butyl-4-hy-droxy-benz-yl)sulfan-yl]benzoate.

Project description:The title salt, C(8)H(20)N(+)·C(22)H(27)O(3)S(-), is a proton-transfer compound derived from the recently reported parent carb-oxy-lic acid [Alhadi et al. (2010). Acta Cryst. E66, o1787] by the addition of a second equivalent of di-n-butyl-amine, yielding the di-n-butyl-ammonium carboxyl-ate salt. The structure of the carboxyl-ate anion resembles that of the parent carb-oxy-lic acid. The main difference lies in the position of the H atom in the 4-hy-droxy group. In the anion the O-H bond is perpendicular, rather than parallel, to the benzyl ring. This position appears to facilitate hydrogen bonding to an O atom of the carboxyl-ate group of a symmetry-related anion. In addition, there are three N-H⋯O hydrogen bonds. In contrast, the neutral species hydrogen bonds via a carboxylic acid dimer. The dihedral angle between the benzene rings in the anion is 79.19 (7)°.

| S-EPMC3007956 | 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

Diethyl 2,2-bis-(3,5-di-tert-butyl-4-hy-droxy-benz-yl)malonate.

Project description:The title mol-ecule, C(37)H(56)O(6), possesses twofold symmetry, with the twofold axis passing through the quaternary C atom. In the crystal, neighbouring mol-ecules are linked via O-H?O hydrogen bonds involving the phenol OH group and the carbonyl O atom, forming chains propagating in [101]. Within these chains, rings are formed with an R(2) (2)(20) motif. There are also C-H?O inter-actions present within the rings.

| S-EPMC3275203 | biostudies-literature

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

Project description:The title amine, C(24)H(33)NO(3), has two substituted aromatic rings at either end of the -CH(2)NH- linkage [C(ar-yl)-CH(2)-NH-C(ar-yl) torsion angle = 77.4 (3)°]. The amino and hy-droxy groups are hydrogen-bond donors to the carbonyl O atom of an adjacent mol-ecule. These hydrogen bonds give rise to a chain that runs along the b axis. One of the tert-butyl groups is disordered over two positions with a site-occupation factor of 0.834 (6) for the major occupied site.

| S-EPMC3009098 | biostudies-literature

5-tert-Butyl-2-hy-droxy-3-(2-thien-yl)benzaldehyde.

Project description:In the crystal structure of the title compound, C(15)H(16)O(2)S, the thio-phene ring is essentially planar (r.m.s. deviation = 0.006 Å for all non-H atoms) and roughly coplanar with the benzene ring, the dihedral angle between the mean planes of the rings being 4.35 (8)°. An intra-molecular O-H⋯O hydrogen bond is observed between the OH group and the aldehyde O atom.

| S-EPMC3007824 | 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

(E)-2'-[(3,5-Di-tert-butyl-2-hy-droxy-benzyl-idene)amino]-1,1'-binaphthalen-2-ol methanol monosolvate.

Project description:The title compound, C(35)H(35)NO(2)·CH(4)O, was obtained by the reaction of rac-2-amino-2-hy-droxy-1,1-binaphthyl and 3,5-di-tert-butyl-2-hy-droxy-benzaldehyde in absolute methanol. In the Schiff base mol-ecule, the two naphthyl bicycles are twisted by 71.15 (5)°. One hy-droxy group is involved in intra-molecular O-H⋯N hydrogen bond, while the methanol solvent mol-ecule is linked to another hy-droxy group via an inter-molecular O-H⋯O hydrogen bond.

| S-EPMC3247328 | biostudies-literature

Bis[2-(hy-droxy-imino-meth-yl)phenolato]nickel(II): a second monoclinic polymorph.

Project description:The title compound, [Ni(C(7)H(6)NO(2))(2)], (I), is a second monoclinic polymorph of the compound, (II), reported by Srivastava et al. [Acta Cryst. (1967), 22, 922] and Mereiter [Private communication (2002) CCDC refcode NISALO01]. The bond lengths and angles are similar in both structures. The mol-ecule in both structures lies on a crystallographic inversion center and both have an inter-nal hydrogen bond. The title compound crystallizes in the space group P2(1)/c (Z = 2), whereas compound (II) is in the space group P2(1)/n (Z = 2) with a similar cell volume but different cell parameters. In both polymorphs, mol-ecules are arranged in the layers but in contrast to the previously published compound (II) where the dihedral angle between the layers is 86.3°, in the title polymorph the same dihedral angle is 29.4°. The structure of (I) is stabilized by strong intra-molecular O-H⋯O hydrogen bonding between the O-H group and the phenolate O atom.

| S-EPMC3051639 | biostudies-literature

2-[(3,5-Di-tert-butyl-4-hy-droxy-benz-yl)sulfan-yl]benzoic acid.

Project description:In the title compound, C(22)H(28)O(3)S, the dihedral angle between the two aromatic rings is 80.56?(6)°. The hy-droxy group is shielded by the two sterically hindered tert-butyl groups and therefore is not involved in any hydrogen bonding. The C-O-H fragment is coplanar with the aromatic ring, the dihedral angle between them being 7(5)°. In the crystal structure, pairs of mol-ecules are hydrogen bonded across crystallographic centers of symmetry.

| S-EPMC3006858 | biostudies-other

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data