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.

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.

Hydrogen Bonding Interaction between a Series of Bolaform Schiff Bases with Barbituric Acid by Spectra and HPLC

2012 ◽  
Vol 236-237 ◽  
pp. 801-805
Author(s):  
Ti Feng Jiao ◽  
Qi Tong ◽  
Jian Liu
Keyword(s):  
Hydrogen Bonding ◽  
Liquid Chromatography ◽  
Schiff Bases ◽  
Barbituric Acid ◽  
Experimental Results ◽  
Intermolecular Hydrogen Bonding ◽  
Hydrogen Bonding Interaction ◽  
Bonding Interaction

In order to investigate the intermolecular hydrogen bonding of special amphiphiles, a series of bolaform amphiphilic Schiff bases (abbreviated as SCn) with different hydrophobic spacers were designed, and their interaction with barbituric acid were tested by spectra and liquid chromatography. The chromatographic properties showed that all 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 VWD detector showed better determination than FLD detector.

scholarly journals Crystal structures and hydrogen bonding in the morpholinium salts of four phenoxyacetic acid analogues

2015 ◽  
Vol 71 (11) ◽  
pp. 1392-1396 ◽  
Author(s):  
Graham Smith ◽  
Daniel E. Lynch
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Ion Pairs ◽  
Phenoxyacetic Acid ◽  
Dimensional Chain ◽  
Hydrogen Bonding Interaction ◽  
One Dimensional ◽  
Bonding Interaction ◽  
Graph Set ◽  
Dichlorophenoxy Acetic Acid

The anhydrous salts morpholinium (tetrahydro-2-H-1,4-oxazin-4-ium) phenoxyacetate, C4H10NO+·C8H7O3−, (I), morpholinium (4-fluorophenoxy)acetate, C4H10NO+·C8H6 FO3−, (II), and isomeric morpholinium (3,5-dichlorophenoxy)acetate (3,5-D), (III), and morpholinium (2,4-dichlorophenoxy)acetic acid (2,4-D), C4H10NO+·C8H5Cl2O3−, (IV), have been determined and their hydrogen-bonded structures are described. In the crystals of (I), (III) and (IV), one of the the aminium H atoms is involved in a three-centre asymmetric cation–anion N—H...O,O′R12(4) hydrogen-bonding interaction with the two carboxyl O-atom acceptors of the anion. With the structure of (II), the primary N—H...O interaction is linear. In the structures of (I), (II) and (III), the second N—H...Ocarboxylhydrogen bond generates one-dimensional chain structures extending in all cases along [100]. With (IV), the ion pairs are linked though inversion-related N—H...O hydrogen bonds [graph setR42(8)], giving a cyclic heterotetrameric structure.

Hydrogen-bond assisted, aggregation-induced emission of digitonin

RSC Advances ◽  
2015 ◽  
Vol 5 (121) ◽  
pp. 100176-100183 ◽  
Author(s):  
Meegle S. Mathew ◽  
K. Sreenivasan ◽  
Kuruvilla Joseph
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Single Bond ◽  
Hydrogen Bonding Interaction ◽  
Strong Base ◽  
Aggregation Induced Emission ◽  
Restricted Rotation ◽  
Bonding Interaction

Weakly luminescent glycoside digitonin luminesces strongly after treatment with strong base. This is attributed to the hydrogen bonding interaction between deprotonated digitonin molecules, which lead to restricted rotation around the single bond.

scholarly journals 2-[(E)-(2-Aminophenyl)iminomethyl]-5-(dimethylamino)phenol

2009 ◽  
Vol 65 (6) ◽  
pp. o1232-o1232
Author(s):  
Yan-Hong Yu ◽  
Kun Qian
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Double Bond ◽  
Dihedral Angle ◽  
Title Compound ◽  
Hydrogen Bonding Interaction ◽  
Compound C ◽  
Bonding Interaction ◽  
Benzene Rings

The molecule of the title compound, C17H21N3O, displays atransconfiguration with respect to the C=N double bond. The dihedral angle between the planes of the two benzene rings is 50.96 (11)° and a strong intramolecular O—H...N hydrogen bond is present. An intermolecular N—H...O hydrogen-bonding interaction stabilizes the crystal structure.

scholarly journals Crystal structure of morpholin-4-ium cinnamate

2015 ◽  
Vol 71 (11) ◽  
pp. o850-o851 ◽  
Author(s):  
Graham Smith
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Cinnamic Acid ◽  
Torsion Angle ◽  
Chain Structure ◽  
Side Chain ◽  
Hydrogen Bonding Interaction ◽  
Bonding Interaction ◽  
A Chain

In the anhydrous salt formed from the reaction of morpholine with cinnamic acid, C4H10NO+·C9H7O2−, the acid side chain in thetrans-cinnamate anion is significantly rotated out of the benzene plane [C—C—C— C torsion angle = 158.54 (17)°]. In the crystal, one of the the aminium H atoms is involved in an asymmetric three-centre cation–anion N—H...(O,O′)R12(4) hydrogen-bonding interaction with the two carboxylate O-atom acceptors of the anion. The second aminium-H atom forms an inter-species N—H...Ocarboxylatehydrogen bond. The result of the hydrogen bonding is the formation of a chain structure extending along [100]. Chains are linked by C—H...O interactions, forming a supramolecular layer parallel to (01-1).

scholarly journals Ethanol(nitrato)[tris(4-cyano-3-phenyl-1H-pyrazol-1-yl)hydroborato]nickel(II)

IUCrData ◽  
2021 ◽  
Vol 6 (7) ◽  
Author(s):  
Elvin V. Salerno ◽  
Lava R. Kadel ◽  
David M. Eichhorn
Keyword(s):  
Hydrogen Bonding ◽  
Coordination Sphere ◽  
Intermolecular Hydrogen Bonding ◽  
Hydrogen Bonding Interaction ◽  
Sandwich Complex ◽  
Intermolecular Hydrogen Bonding Interaction ◽  
Bonding Interaction ◽  
Half Sandwich

The synthesis and structure is reported of TpPh,4CNNi(NO3)(EtOH) or [Ni(C30H19BN9)(NO3)(C2H6O)], the first half-sandwich complex of a cyanoscorpionate ligand. The pseudooctahedral coordination sphere of the NiII ion is comprised of a tridentate tris(4-cyano-3-phenylpyrazolyl)borate ligand, a bidentate nitrate ligand and a neutral ethanol ligand. The phenyl substituents on the TpPh,4CN ligand are relatively parallel to the planes of the ethanol and nitrate ligands. An intermolecular hydrogen-bonding interaction is evident between the ethanol OH group and the pyrazole CN substituent. The ethanol ligand was modeled with a 0.572 (13)/0.428 (13) disorder of the methyl C atom.

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