Deuterium isotope effects and the dissociation of deuterio-phosphoric acid from 5 to 50.deg.

1970 ◽  
Vol 74 (4) ◽  
pp. 706-710 ◽  
Author(s):  
Maya Paabo ◽  
Roger G. Bates
Keyword(s):  
Phosphoric Acid ◽  
Isotope Effects ◽  
Deuterium Isotope Effects

Third dissociation constant of phosphoric acid in H2O and D2O from 75 to 300 °C at p = 20.4 MPa using Raman spectroscopy and a titanium-sapphire flow cell

2021 ◽  
Author(s):  
Jacy Conrad ◽  
Peter R. Tremaine
Keyword(s):  
Raman Spectroscopy ◽  
Phosphoric Acid ◽  
Dissociation Constant ◽  
Raman Spectra ◽  
Isotope Effects ◽  
Flow Cell ◽  
Ionization Constants ◽  
Hydrothermal Conditions ◽  
Phosphate Ion ◽  
Deuterium Isotope Effects

The first reported Raman spectra and ionization constants for the phosphate ion in H2O and D2O above 50 °C quantify deuterium isotope effects under hydrothermal conditions.

Deuterium isotope effects on31P NMR parameters: hydrogen bonding in a solid urea–phosphoric acid adduct

1996 ◽  
Vol 92 (24) ◽  
pp. 5047-5050 ◽  
Author(s):  
Claudia M. Lagier ◽  
David C. Apperley ◽  
Ulrich Scheler ◽  
Alejandro C. Olivieri ◽  
Robin K. Harris
Keyword(s):  
Hydrogen Bonding ◽  
Phosphoric Acid ◽  
Isotope Effects ◽  
Nmr Parameters ◽  
Deuterium Isotope Effects ◽  
Acid Adduct

Mechanism of hydration and isomerisation of 4-ethylidene-2,6-di-tert-butyl-2,5-cyclohexadien-1-one. Kinetics, acid-base catalysis and solvent deuterium isotope effects

1979 ◽  
Vol 44 (1) ◽  
pp. 110-122 ◽  
Author(s):  
Jiří Velek ◽  
Bohumír Koutek ◽  
Milan Souček
Keyword(s):  
Aqueous Medium ◽  
Rate Equation ◽  
Kinetic Data ◽  
Isotope Effects ◽  
Base Catalysis ◽  
Quinone Methide ◽  
Reaction Products ◽  
Acid Base ◽  
Deuterium Isotope Effects ◽  
Hydroxybenzyl Alcohol

Competitive hydration and isomerisation of the quinone methide I at 25 °C in an aqueous medium in the region of pH 2.4-13.0 was studied spectrophotometrically. The only reaction products in the studied range of pH are 4-hydroxybenzyl alcohol (II) and 4-hydroxystyrene (III). The form of the overall rate equation corresponds to a general acid-base catalysis. The mechanism of both reactions for three markedly separated pH regions is discussed on the basis of kinetic data and solvent deuterium effect.

Hydrogen/Deuterium-Isotope Effects on NMR Chemical Shifts and Symmetry of Homoconjugated Hydrogen-Bonded Ions in Polar Solution

2000 ◽  
Vol 122 (51) ◽  
pp. 12878-12879 ◽  
Author(s):  
Parwin Schah-Mohammedi ◽  
Ilja G. Shenderovich ◽  
Carsten Detering ◽  
Hans-Heinrich Limbach ◽  
Peter M. Tolstoy ◽  
...  
Keyword(s):  
Chemical Shifts ◽  
Isotope Effects ◽  
Polar Solution ◽  
Nmr Chemical Shifts ◽  
Hydrogen Deuterium ◽  
Deuterium Isotope Effects ◽  
Hydrogen Bonded
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