scholarly journals Structure Elucidation of N-aryl-2-chloro-3-oxobutanamides with respect to intra- and intermolecular hydrogen bonding

2002 ◽  
Vol 2002 (1) ◽  
pp. 13-14 ◽  
Author(s):  
Petra Frohberg ◽  
Guntram Drutkowski ◽  
Christoph Wagner ◽  
Olaf Lichtenberger
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Solid State ◽  
Structure Elucidation ◽  
Intermolecular Hydrogen Bond ◽  
Carbonyl Oxygen ◽  
Intermolecular Hydrogen Bonding ◽  
Intramolecular Association

In general, N-aryl-2-chloro-3-oxobutanamides form in solid state an intermolecular hydrogen bond between the anilide hydrogen and the anilide carbonyl oxygen of a neighbouring molecule, which is disrupted in solution. An intramolecular association could not be detected.

A comparative study on the dynamics of epimeric 1-hydroxymethyl quinolizidines: II. The solvent and concentration dependence of the association properties

1988 ◽  
Vol 66 (9) ◽  
pp. 2166-2171 ◽  
Author(s):  
K. Kulińska ◽  
M. Wiewiórowski
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Intermolecular Hydrogen Bond ◽  
Chloroform Solution ◽  
Weak Acid ◽  
Hydroxyl Group ◽  
Intermolecular Hydrogen Bonding ◽  
Concentrated Solutions ◽  
Electron Pairs ◽  
Solvent Molecules

The homo and heteroassociation patterns of lupinine and epilupinine in different solvents and at various concentrations have been studied. In n-hexane, n-heptane, CCl4, and C2H4Cl2 solvents, lupinine monomers with an intramolecular OH … N hydrogen bond dominate over homoassociates with an OH … O′ intermolecular hydrogen bond even in concentrated solutions. Homoassociation of lupinine by intermolecular OH … N′ hydrogen bonding is observed only in saturated solutions. In chloroform solution any intermolecular homoassociation is effectively blocked because of significant affinity of chloroform molecules acting as a weak acid toward the free electron pairs of the oxygen atom from the hydroxyl group that would be otherwise engaged in intramolecular OH … N hydrogen bonding. Epilupinine in n-hexane, n-heptane, CCl4, C2H4Cl2, and chloroform solutions forms possible homoassociates both by OH … N′ and OH … O′ intermolecular hydrogen bonding. In dioxane-d8, DMSO, and D2O solvents both lupinine and epilupinine form heteroassociates with solvent molecules.

Rage Against Conformity: Ruthenium(ɪɪ) Bisterpyridine Complexes Respond to Crystal Engineering Instructions with Whelming Results

2017 ◽  
Vol 70 (5) ◽  
pp. 529 ◽  
Author(s):  
Hasti Iranmanesh ◽  
Kasun S. A. Arachchige ◽  
William A. Donald ◽  
Niamh Kyriacou ◽  
Chao Shen ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Solid State ◽  
Single Crystal ◽  
Crystal Engineering ◽  
Intermolecular Hydrogen Bonding ◽  
Hydrogen Bond Donor ◽  
One Dimensional ◽  
X Ray ◽  
Hydrogen Bonded

Four heteroleptic ruthenium(ii) complexes of 4′-functionalised 2,2′:6′,2′′-terpyridine are reported, along with their solid-state single-crystal X-ray structures. The complexes feature complementary hydrogen-bond donor (phenol) and acceptor (pyridyl) groups designed to assemble into one-dimensional polymers. In one example, the system obeys the programmed instructions to form a one-dimensional, self-complementary hydrogen-bonded polymer. In one other example, a water-bridged hydrogen-bonded polymer is formed. In the remaining two structures, aryl–aryl interactions dominate the intermolecular interactions, and outweigh the contribution of intermolecular hydrogen bonding.

scholarly journals Different intra- and intermolecular hydrogen-bonding patterns in (3S,4aS,8aS)-2-[(2R,3S)-3-(2,5-X2-benzamido)-2-(2,5-X2-benzoyloxy)-4-phenylbutyl]-N-tert-butyldecahydroisoquinoline-3-carboxamides (X= H or Cl): compounds with moderate aspartyl protease inhibition activity

2017 ◽  
Vol 73 (6) ◽  
pp. 913-917
Author(s):  
Wilson Cunico ◽  
Maria de Lourdes G. Ferreira ◽  
James L. Wardell ◽  
William T. A. Harrison
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Solid State ◽  
Hydrogen Bonds ◽  
Aspartyl Protease ◽  
Intermolecular Hydrogen Bonding ◽  
Inhibition Activity ◽  
Chemical Similarity ◽  
Protease Inhibition ◽  
Donor And Acceptor

The crystal structures of (3S,4aS,8aS)-2-[(2R,3S)-3-benzamido-2-benzoyloxy-4-phenylbutyl]-N-tert-butyldecahydroisoquinoline-3-carboxamide, C38H47N3O4, (I), and (3S,4aS,8aS)-2-[(2R,3S)-3-(2,5-dichlorobenzamido)-2-(2,5-dichlorobenzoyloxy)-4-phenylbutyl]-N-tert-butyldecahydroisoquinoline-3-carboxamide, C38H43Cl4N3O4, (II), are described. Despite their chemical similarity, they adopt different conformations in the solid state: (I) features a bifurcated intramolecular N—H...(N,O) hydrogen bond from thetert-butylamide NH group to the piperidine N atom and the benzoate O atom, whereas (II) has an intramolecular N—H...O link from the benzamide NH group to thetert-butylamide O atom. In the crystal of (I), molecules are linked byC(4) amide N—H...O hydrogen bonds into chains propagating in the [010] direction, with both donor and acceptor parts of the benzamide group. In the extended structure of (II),C(11) N—H...O chains propagating in the [010] direction arise, with the donor being thetert-butylamide NH group and the acceptor being the O atom of the benzamide group.

Investigation of Hydrogen Bonding Interaction between Bolaform Schiff Bases with Barbituric Acid by HPLC

2011 ◽  
Vol 356-360 ◽  
pp. 48-51
Author(s):  
Qi Tong ◽  
Ti Feng Jiao
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Liquid Chromatography ◽  
Schiff Bases ◽  
Barbituric Acid ◽  
Flexible Structure ◽  
Intermolecular Hydrogen Bonding ◽  
Acid Molecule ◽  
Hydrogen Bonding Interaction ◽  
Bonding Interaction

In order to investigate the intermolecular hydrogen bonding of special amphiphiles, two bolaform amphiphilic Schiff bases (GN1 and GN2) with different hydrophilic spacers were designed, and their interaction with barbituric acid were tested by liquid chromatography. The chromatographic properties showed that both the Schiff bases showed hydrogen bonding interaction with barbituric acid. In addition, the influence of various detectors was also studied on both cases. Experimental results show that the test with FLD showed better determination than other detectors. It is proposed that due to the directionality and strong matching of hydrogen bond, one barbituric acid molecule can be encapsulated into the intramolecular area of GN1, while two barbituric acid molecules were trapped into the GN2 molecule through intermolecular H-bonds for GN2 due to the long spacer and flexible structure. A rational complex mode was proposed.

(Acetylacetonato-κ2O,O′)[1-(4-bromophenyl-κC2)-3-methylimidazol-2-ylidene-κC2]platinum(II)

2012 ◽  
Vol 68 (8) ◽  
pp. m203-m205 ◽  
Author(s):  
Mario Tenne ◽  
Yvonne Unger ◽  
Thomas Strassner
Keyword(s):  
Hydrogen Bonding ◽  
Solid State ◽  
Intermolecular Hydrogen Bonding ◽  
Coordination Environment ◽  
Π Interactions ◽  
New Class ◽  
Square Planar ◽  
Parallel Fashion

The title platinum(II) complex, [Pt(C10H8BrN2)(C5H7O2)], has a bidentate cyclometallated phenylimidazolylidene ligand and an acetylacetonate spectator ligand, which form a distorted square-planar coordination environment around the PtIIcentre. In the solid state, the molecules are oriented in a parallel fashion by intermolecular hydrogen bonding and π–π and C—H...π interactions, while close Pt...Pt contacts are not observed. The structure is only the second example for this new class of compounds.

Hydrogen bond-modulated molecular packing and its applications in high-performance non-doped organic electroluminescence

2020 ◽  
Vol 7 (10) ◽  
pp. 2734-2740
Author(s):  
Yizhong Shi ◽  
Kai Wang ◽  
Youichi Tsuchiya ◽  
Wei Liu ◽  
Takeshi Komino ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
High Performance ◽  
Molecular Packing ◽  
Intermolecular Hydrogen Bonding ◽  
Supramolecular Framework ◽  
Organic Electroluminescence

Suitable intermolecular hydrogen bonding enables the formation of a fixed 3D supramolecular framework and suppresses the exciton nonradiative decays and quenching.

scholarly journals Solid-state structure and electronic states of hydrogen-bonded dimer of pyridyl-substituted tetrathiafulvalene salted with PF6−

RSC Advances ◽  
2017 ◽  
Vol 7 (11) ◽  
pp. 6236-6241 ◽  
Author(s):  
Tomoaki Kanetou ◽  
Ryo Tsunashima ◽  
Norihisa Hoshino ◽  
Tomoyuki Akutagawa
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Dipole Moment ◽  
Solid State ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Electronic States ◽  
Electronic Systems ◽  
State Structure ◽  
Solid State Structure

Our results clarified uniqueness in hydrogen bonding TTFPy dimer in which proton in hydrogen bond was thermally fluctuated. In addition, the fluctuation was coupled with π-electronic systems of TTF moiety where electric dipole moment was amplified.

A comparison of the intramolecular and intermolecular hydrogen bonding of N,N′-ethylenebis(aminobenzylidene) in the solid state with its salen analogue

2005 ◽  
Vol 737 (1) ◽  
pp. 69-74 ◽  
Author(s):  
Samantha Gakias ◽  
Colin Rix ◽  
Alan Fowless ◽  
Graham Wills-Johnson ◽  
Kay Latham ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Solid State ◽  
Intermolecular Hydrogen Bonding

Solid‐State Hydrogen‐Bond Alterations in a [Co 2 Fe 2 ] Complex with Bifunctional Hydrogen‐Bonding Donors

2019 ◽  
Vol 25 (31) ◽  
pp. 7449-7452 ◽  
Author(s):  
Masayuki Nihei ◽  
Yuta Yanai ◽  
Dominik Natke ◽  
Ryo Takayama ◽  
Marina Kato ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Solid State

Weak intramolecular and intermolecular hydrogen bonding of benzyl alcohol, 2-phenylethanol and 2-phenylethylamine in the adsorption on graphitized thermal carbon black

2015 ◽  
Vol 17 (37) ◽  
pp. 24282-24293 ◽  
Author(s):  
V. V. Varfolomeeva ◽  
A. V. Terentev
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Carbon Black ◽  
Benzyl Alcohol ◽  
Quantum Chemical Calculations ◽  
Quantum Chemical ◽  
Intermolecular Hydrogen Bonding ◽  
Weak Hydrogen Bond ◽  
Graphitized Thermal Carbon Black ◽  
Flexible Molecules

The present paper discusses the contemporary state of the studies of the weak hydrogen bond contribution to the adsorption of flexible molecules. We formulated the problems which can be solved today only using the NCI method and quantum chemical calculations.

Sign in / Sign up

Export Citation Format

Share Document