Infrared Study of The Hydrogen Bond Complexes Involving 2,3-bis-(2-Pyridyl)-pyzazine and Proton Donors. Comparison with Monofunctional Heterocyclic N-Bases

1998 ◽  
Vol 31 (4) ◽  
pp. 737-746 ◽  
Author(s):  
Muriel Goethals ◽  
Th. Zeegers-Huyskens
Keyword(s):  
Hydrogen Bond ◽  
Infrared Study ◽  
Proton Donors

An infrared study of the interaction between ethyl N-(diphenylmethylene)glycinate with proton donors: comparison with N-benzylidenemethylamine

1986 ◽  
Vol 64 (12) ◽  
pp. 2305-2309 ◽  
Author(s):  
Marleen Ruysen ◽  
Thérèse Zeegers-Huyskens
Keyword(s):  
Hydrogen Bond ◽  
Ir Spectra ◽  
Equilibrium Constants ◽  
Lone Pair ◽  
Imino Group ◽  
Infrared Study ◽  
Hydrogen Bond Formation ◽  
Hydroxy Proton ◽  
Proton Donors ◽  
Intramolecular Hydrogen

The interaction between ethyl N-(diphenylmethylene)glycinate (DPG) and hydroxy proton donors or pyrrole has been investigated by ir spectrometry. The equilibrium constants, enthalpies, and entropies of complex formation have been determined in carbon tetrachloride solution and compared with the data obtained for the complexes involving N-benzylidene-methylamine and the same proton donors. The ir spectra studied mainly in the νOH, νC=N, νC=O, and νC—O regions suggest that hydrogen bond formation occurs at the N atom of the imino group and at the O atom of the carbonyl group. The results are discussed in terms of the basicity at the two acceptor sites and of the accessibility of the lone pair of electrons. The ir spectra of the solid adduct of DPG with HCl show that protonation takes place on the N atom. The protonated structure is possibly stabilized by an intramolecular hydrogen bond.

Plucking a hydrogen bond: A near infrared study of all four intermolecular modes in (DF)2

1996 ◽  
Vol 105 (16) ◽  
pp. 6645-6664 ◽  
Author(s):  
Scott Davis ◽  
David T. Anderson ◽  
David J. Nesbitt
Keyword(s):  
Hydrogen Bond ◽  
Near Infrared ◽  
Infrared Study

Raman and infrared study on the interactions between phospholipids and proton donors

1981 ◽  
Vol 11 (4) ◽  
pp. 225-230 ◽  
Author(s):  
A. Bertoluzza ◽  
S. Bonora ◽  
G. Fini ◽  
M. A. Morelli
Keyword(s):  
Infrared Study ◽  
Proton Donors

A Low Temperature Infrared Study on the Association of Thiols with Pyridine and Triethylamine

1973 ◽  
Vol 51 (7) ◽  
pp. 985-990 ◽  
Author(s):  
R. Bicca De Alencastro ◽  
C. Sandorfy
Keyword(s):  
Low Temperatures ◽  
Bond Formation ◽  
Infrared Study ◽  
Hydrogen Bond Formation ◽  
Text Type ◽  
Predominant Species ◽  
Type Complex ◽  
Proton Donors ◽  
Stretching Vibration ◽  
Associated Species

The infrared spectra of solutions containing propane-1-thiol or benzenethiol as proton donors, and pyridine or triethylamine as proton acceptors were measured down to about −100 °C. The dependence of hydrogen bond formation on concentration and temperature was studied at the fundamental and overtone region of the S—H stretching vibration. The predominant species is found to be a 1:1 [Formula: see text] type complex. In addition, evidence was found for the existence of more highly associated species at low temperatures. Thiol–thiol [Formula: see text] type hydrogen bonds are also present in the case of benzenethiol–pyridine mixtures.

scholarly journals Hydrogen Bond Studies. 55. Infrared Study of 2,5-Dichlorobenzenesulfonic Acid Trihydrate and 2,5-Dibromobenzenesulfonic Acid Trihydrate.

1972 ◽  
Vol 26 ◽  
pp. 1591-1598 ◽  
Author(s):  
Anders Eriksson ◽  
Jan Lindgren ◽  
Marja-Leena Hyvönen ◽  
Maija-Leena Murto ◽  
Sigfrid Svensson
Keyword(s):  
Hydrogen Bond ◽  
Infrared Study

Anesthesia and hydrogen bonding. A semi-quantitative infrared study at room temperature

1978 ◽  
Vol 56 (12) ◽  
pp. 1681-1686 ◽  
Author(s):  
Ginette Trudeau ◽  
K. C. Cole ◽  
Rachel Massuda ◽  
C. Sandorfy
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Room Temperature ◽  
Quantitative Relationship ◽  
Bond Breaking ◽  
Infrared Study ◽  
Text Types ◽  
Theories Of Anesthesia ◽  
Anesthetic Potency

It has been shown previously that certain anesthetics hinder the formation of hydrogen bonds of the [Formula: see text] types. An attempt bas now been made to correlate this hydrogen bond 'breaking' property with anesthetic potency. As a measure of the former, relative intensifies of infrared bands related to 'free' and hydrogen bonded species were used. The band which was chosen for this purpose is the OH or NH stretching + in-plane bending combination band. This made it possible to carry out the measurements at room temperature. A semi-quantitative relationship has been found. Its significance for the theories of anesthesia is discussed.

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