NMR Studies of the Kinetics of Homogeneously Catalyzed Hydrogenations Using Parahydrogen Induced Polarization at Variable Pressure*

1992 ◽  
Vol 1 (Part_2) ◽  
pp. 155-165
Author(s):  
Klaus Woelk ◽  
Joachim Bargon
Keyword(s):  
Induced Polarization ◽  
Variable Pressure ◽  
Nmr Studies ◽  
Kinetics Of

High field 1H NMR Studies of Sol-Gel Kinetics

1986 ◽  
Vol 73 ◽  
Author(s):  
Bruce D. Kay ◽  
Roger A. Assink
Keyword(s):  
Equilibrium Distribution ◽  
Sol Gel ◽  
Nmr Studies ◽  
H Nmr ◽  
Rate Limiting Step ◽  
Rate Of Hydrolysis ◽  
Acid Catalyzed ◽  
Product Species ◽  
Rate Limiting ◽  
Kinetics Of

ABSTRACTHigh resolution 1H NMR spectroscopy at high magnetic fields is employed to study the reaction kinetics of the Si(OCH3)4:CH3OH:H2O sol-gel system. Both the overall extent of reaction as a function of time and the equilibrium distribution of species are measured. In acid catalyzed solution, condensation is the rate limiting step while in base catalyzed solution, hydrolysis becomes rate limiting. A kinetic model in which the rate of hydrolysis is assumed to be independent of the adjacent functional groups is presented. This model correctly predicts the distribution of product species during the initial stages of the sol-gel reaction.

NMR Studies of Base-Pair Kinetics of Nucleic Acids

1986 ◽  
pp. 31-44
Author(s):  
Jean Louis Leroy ◽  
Daniel Broseta ◽  
Nicolas Bolo ◽  
Maurice Guéron
Keyword(s):  
Nucleic Acids ◽  
Base Pair ◽  
Nmr Studies ◽  
Kinetics Of

NMR Studies of Phenylbenzohydroxamic Acid and Kinetics of Complex Formation with Nickel(II)

2003 ◽  
Vol 42 (17) ◽  
pp. 5434-5441 ◽  
Author(s):  
Begoña García ◽  
Saturnino Ibeas ◽  
A. Muñoz ◽  
José M. Leal ◽  
Chiara Ghinami ◽  
...  
Keyword(s):  
Complex Formation ◽  
Nmr Studies ◽  
Kinetics Of

scholarly journals Variable-Temperature and Variable-Pressure Nitrogen-14 NMR Studies on the Exchange Reaction of Different Nitriles at the Nickel(II) Ion

1989 ◽  
Vol 62 (6) ◽  
pp. 1852-1858 ◽  
Author(s):  
Masao Ishii ◽  
Shigenobu Funahashi ◽  
Koji Ishihara ◽  
Motoharu Tanaka
Keyword(s):  
Exchange Reaction ◽  
Variable Temperature ◽  
Variable Pressure ◽  
Nmr Studies
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