scholarly journals Supramolecular assembly and spectroscopic characterization of indolenine–barbituric acid zwitterions

2021 ◽  
Author(s):  
Abdul Qaiyum Ramle ◽  
Edward R. T. Tiekink ◽  
Chee Chin Fei ◽  
Nurhidayatullaili Muhd. Julkapli ◽  
Wan Jefrey Basirun
Keyword(s):  
Hydrogen Bonding ◽  
Barbituric Acid ◽  
Supramolecular Assembly ◽  
Spectroscopic Characterization ◽  
Intermolecular Hydrogen Bonding ◽  
Hypsochromic Shift ◽  
Protic Solvents ◽  
Supramolecular Aggregation

The intermolecular hydrogen bonding of barbiturates assists in the supramolecular aggregation and a hypsochromic shift is shown in protic solvents.

scholarly journals Crystallographic and spectroscopic characterization of (R)-O-acetylmandelic acid

2016 ◽  
Vol 72 (7) ◽  
pp. 901-903
Author(s):  
Cady Cirbes ◽  
Joseph M. Tanski
Keyword(s):  
Hydrogen Bonding ◽  
Carboxylic Acid ◽  
Mandelic Acid ◽  
Phenylacetic Acid ◽  
Spectroscopic Characterization ◽  
Acid Group ◽  
Intermolecular Hydrogen Bonding ◽  
Carboxylic Acid Group ◽  
Donor Acceptor

The title compound [systematic name: (R)-(−)-2-acetoxy-2-phenylacetic acid], C10H10O4, is a resolved chiral ester derivative of mandelic acid. The compound contains an acetate group and a carboxylic acid group, which engage in intermolecular hydrogen bonding, forming chains extending parallel to [001] with a short donor–acceptor hydrogen-bonding distance of 2.676 (2) Å.

scholarly journals Crystallographic and spectroscopic characterization of 5-chloropyridine-2,3-diamine

2017 ◽  
Vol 73 (8) ◽  
pp. 1213-1217
Author(s):  
Aron Sulovari ◽  
Joseph M. Tanski
Keyword(s):  
Hydrogen Bonding ◽  
Title Compound ◽  
Intramolecular Interaction ◽  
Spectroscopic Characterization ◽  
Intermolecular Hydrogen Bonding ◽  
Amino Groups ◽  
Hydrogen Atoms ◽  
Face To Face ◽  
Compound C

The two ortho-amino groups of the title compound, C5H6ClN3, twist out of the plane of the molecule to minimize intramolecular interaction between the amino hydrogen atoms. In the crystal, the amino groups and the pyridine N atom engage in intermolecular hydrogen bonding. The molecules pack into spiral hydrogen-bonded columns with offset face-to-face π-stacking.

Spectral Investigation of Bolaform Schiff Bases with Barbituric Acid

2010 ◽  
Vol 160-162 ◽  
pp. 590-593 ◽  
Author(s):  
Ti Feng Jiao ◽  
Juan Zhou ◽  
Li Kui Huang ◽  
Jing Xin Zhou
Keyword(s):  
Hydrogen Bonding ◽  
Schiff Bases ◽  
Barbituric Acid ◽  
Supramolecular Assembly ◽  
Flexible Structure ◽  
Intermolecular Hydrogen Bonding ◽  
Acid Molecule ◽  
Hydrogen Bonding Interaction ◽  
Spectral Measurements ◽  
Bonding Interaction

In order to investigate the supramolecular assembly and intermolecular hydrogen bonding of special amphiphiles, two bolaform amphiphilic Schiff bases (GN1 and GN2) with different hydrophilic spacers were designed, and their supramolecular assembly and interaction properties were investigated by spectral measurements. It was found that both the Schiff bases showed hydrogen bonding interaction with barbituric acid. In addition, it was interesting to note that the spacer groups of the molecules had effect on the molecular ratio in the hydrogen-bonded complexes. 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.

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.

Bioinspired catalysis and bromoperoxidase like activity of a multistimuli-responsive supramolecular metallogel: supramolecular assembly triggered by pi–pi stacking and hydrogen bonding interactions

2020 ◽  
Vol 44 (14) ◽  
pp. 5410-5418 ◽  
Author(s):  
Sunshine Dominic Kurbah ◽  
Ram A. Lal
Keyword(s):  
Hydrogen Bonding ◽  
Supramolecular Assembly ◽  
Synthesis And Characterization ◽  
Pi Stacking ◽  
Hydrogen Bonding Interactions ◽  
Bromination Reaction ◽  
Oxidative Bromination ◽  
Self Assembled

We report the synthesis and characterization of a new self-assembled VO2-L metallogel. Multi-responsive properties of the gel were also studied and can be used for sensing OH− anions. Bromoperoxidase-like activity of VO2-L metallogel for oxidative bromination reaction was also reported.

scholarly journals Crystallographic and spectroscopic characterization of 3-chloro-5-fluorosalicylaldehyde

2020 ◽  
Vol 76 (12) ◽  
pp. 1810-1812
Author(s):  
Christopher T. Triggs ◽  
Joseph M. Tanski
Keyword(s):  
Hydrogen Bonding ◽  
Title Compound ◽  
Intramolecular Hydrogen Bonding ◽  
Spectroscopic Characterization ◽  
Face To Face ◽  
Π Stacking ◽  
Intramolecular Hydrogen

The title compound (systematic name: 3-chloro-5-fluoro-2-hydroxybenzaldehyde), C7H4ClFO2, is a dihalogenated salicylaldehyde derivative that has been studied for its antibacterial characteristics. The salicylaldehyde engages in intramolecular hydrogen bonding with an O—H...O distance of 2.6231 (19) Å while the molecules pack together via weak intermolecular C—H...O, C—H...F and F...O interactions and offset face-to-face π-stacking.

scholarly journals {N 1-[2-(Butylselanyl)benzyl]-N 2,N 2-dimethylethane-1,2-diamine}dichloridomercury(II)

2018 ◽  
Vol 74 (8) ◽  
pp. 1151-1154
Author(s):  
Pushpendra Singh ◽  
Harkesh B. Singh ◽  
Ray J. Butcher
Keyword(s):  
Hydrogen Bonding ◽  
Solid State ◽  
Self Assembly ◽  
Title Compound ◽  
Supramolecular Assembly ◽  
Molecular Geometry ◽  
The Self ◽  
Intermolecular Hydrogen Bonding ◽  
Hydrogen Bonding Interactions ◽  
Donor Acceptor

In the title compound, [HgCl2(C16H28N2Se)], the primary geometry around the Se and Hg atoms is distorted trigonal–pyramidal and distorted square-pyramidal, respectively. The distortion of the molecular geometry in the complex is caused by the steric demands of the ligands attached to the Se atom. The Hg atom is coordinated through two chloride anions, an N atom and an Se atom, making up an unusual HgNSeCl2 coordination sphere with an additional long Hg...N interaction. Intermolecular C—H...Cl interactions are the only identified intermolecular hydrogen-bonding interactions that seem to be responsible for the self assembly. These relatively weak C—H...Cl hydrogen bonds possess the required linearity and donor–acceptor distances. They act as molecular associative forces that result in a supramolecular assembly along the b-axis direction in the solid state of the title compound.

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