ChemInform Abstract: Migration of the Methoxy Group in an Organosilicon Cation. Reactions of (Bromodiphenylsilyl)(methoxydimethylsilyl)bis(trimethylsilyl)methane with Silver Borofluoride and Silver Chloride. Crystal Structure of (Chlorodiphenylsilyl)(meth

ChemInform ◽  
1987 ◽  
Vol 18 (43) ◽  
Author(s):  
N. H. BUTTRUS ◽  
C. EABORN ◽  
P. B. HITCHCOCK ◽  
P. D. LICKISS ◽  
S. T. NAJIM
Keyword(s):  
Crystal Structure ◽  
Methoxy Group ◽  
Silver Chloride ◽  
Chloride Crystal

scholarly journals Synthesis and Complexation Properties of 2-Hydroxy-5-methoxyphenylphosphonic Acid (H3L1). Crystal Structure of the [Cu(H2L1)2(Н2О)2] Complex

2021 ◽  
Vol 91 (11) ◽  
pp. 2176-2186
Author(s):  
G. S. Tsebrikova ◽  
Yu. I. Rogacheva ◽  
I. S. Ivanova ◽  
A. B. Ilyukhin ◽  
V. P. Soloviev ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Methoxy Group ◽  
Protonation Constants ◽  
Water Molecules ◽  
X Ray Diffraction ◽  
X Ray ◽  
The Stability ◽  
Intramolecular Hydrogen ◽  
Oxygen Atoms

Abstract 2-Hydroxy-5-methoxyphenylphosphonic acid (H3L1) and the complex [Cu(H2L1)2(H2O)2] were synthesized and characterized by IR spectroscopy, thermogravimetry, and X-ray diffraction analysis. The polyhedron of the copper atom is an axially elongated square bipyramid with oxygen atoms of phenolic and of monodeprotonated phosphonic groups at the base and oxygen atoms of water molecules at the vertices. The protonation constants of the H3L1 acid and the stability constants of its Cu2+ complexes in water were determined by potentiometric titration. The protonation constants of the acid in water are significantly influenced by the intramolecular hydrogen bond and the methoxy group. The H3L1 acid forms complexes CuL‒ and CuL24‒ with Cu2+ in water.

scholarly journals Crystal structure of (E)-2-hydroxy-4′-methoxyazastilbene

2015 ◽  
Vol 71 (6) ◽  
pp. 571-573
Author(s):  
Suchada Chantrapromma ◽  
Narissara Kaewmanee ◽  
Nawong Boonnak ◽  
Kan Chantrapromma ◽  
Hazem A. Ghabbour ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Methoxy Group ◽  
Condensation Reaction ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Benzene Rings ◽  
Amino Phenol ◽  
Ring Motif

The title azastilbene derivative, C14H13NO2{systematic name: (E)-2-[(4-methoxybenzylidene)amino]phenol}, is a product of the condensation reaction between 4-methoxybenzaldehyde and 2-aminophenol. The molecule adopts anEconformation with respect to the azomethine C=N bond and is almost planar, the dihedral angle between the two substituted benzene rings being 3.29 (4)°. The methoxy group is coplanar with the benzene ring to which it is attached, the Cmethyl—O—C—C torsion angle being −1.14 (12)°. There is an intramolecular O—H...N hydrogen bond generating anS(5) ring motif. In the crystal, molecules are linkedviaC—H...O hydrogen bonds, forming zigzag chains along [10-1]. The chains are linkedviaC—H...π interactions, forming a three-dimensional structure.

Evidence for anisotropy in chlorine/nitrogen interactions in the cyanuric chloride crystal structure

1993 ◽  
Vol 34 (27) ◽  
pp. 4349-4352 ◽  
Author(s):  
Stephen J. Maginn ◽  
Richard G. Compton ◽  
Mark S. Harding ◽  
Colin M. Brennan ◽  
Robert Docherty
Keyword(s):  
Crystal Structure ◽  
Cyanuric Chloride ◽  
Chloride Crystal

scholarly journals 2-Hydroxy-3-methoxybenzaldehyde (o-vanillin) revisited

2012 ◽  
Vol 68 (8) ◽  
pp. o2336-o2337
Author(s):  
David Shin ◽  
Peter Müller
Keyword(s):  
Crystal Structure ◽  
Low Temperature ◽  
Methoxy Group ◽  
Ring Plane ◽  
Acta Cryst ◽  
Oh Groups ◽  
Geometric Precision ◽  
Modern Methods ◽  
Benzene Ring Plane ◽  
Order Of Magnitude

The structure ofortho-vanillin, C8H8O3, has been revisited with modern methods and at low temperature (100 K). The previous structure [Iwasakiet al.(1976).Acta Cryst. B32, 1264–1266] is confirmed, but geometric precision is improved by an order of magnitude. The C atom of the methoxy group lies close to the benzene ring plane, which is the most common geometry for –OMe groups lyingorthoto –OH groups on an aromatic ring. The crystal structure displays one intramolecular O—H...O and three weak intermolecular C—H...O hydrogen bonds.

scholarly journals (E)-2-{[(5-Chloro-2-methoxyphenyl)imino]methyl}-4-nitrophenol

IUCrData ◽  
2017 ◽  
Vol 2 (2) ◽  
Author(s):  
Gönül Sevde Öv Bodur ◽  
Metin Yavuz ◽  
Necmi Dege ◽  
Hakan Bülbül ◽  
Erbil Ağar
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Methoxy Group ◽  
Crystal Packing ◽  
Maximum Deviation ◽  
Stacking Interactions ◽  
Compound C ◽  
Phenol Ring

The title compound, C14H11ClN2O4, is a Schiff base. Its molecule is approximatelly planar, with a maximum deviation of 0.096 (4) Å from planarity for the methyl C atom of the methoxy group. The dihedral angle between the 5-chloro-2-methoxyphenyl ring and the phenol ring is 2.40 (10)°. In the crystal structure, intermolecular C—H...O hydrogen bonds and π–π stacking interactions consolidate the crystal packing.

scholarly journals Crystal structure of 4-methoxyquinazoline

2014 ◽  
Vol 70 (12) ◽  
pp. o1279-o1279
Author(s):  
Gamal A. El-Hiti ◽  
Keith Smith ◽  
Amany S. Hegazy ◽  
Mohammed B. Alshammari ◽  
Benson M. Kariuki
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Methoxy Group ◽  
Ring System ◽  
Axis Direction ◽  
Compound C ◽  
The Mean ◽  
Packing Arrangement

The title compound, C9H8N2O, is almost planar, with the C atom of the methoxy group deviating from the mean plane of the quinazoline ring system (r.m.s. deviation = 0.011 Å) by 0.068 (4) Å. In the crystal, molecules form π–π stacks parallel to theb-axis direction [centroid–centroid separation = 3.5140 (18) Å], leading to a herringbone packing arrangement.

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