scholarly journals Are rate and selectivity correlated in iridium-catalysed hydrogen isotope exchange reactions?

2021 ◽  
Author(s):  
Daria S. Timofeeva ◽  
David M Lindsay ◽  
W. J. Kerr ◽  
David James Nelson
Keyword(s):  
Functional Groups ◽  
Hydrogen Isotope ◽  
Isotope Exchange ◽  
Reaction Rate ◽  
Exchange Reactions ◽  
Reaction Selectivity ◽  
Hydrogen Isotope Exchange ◽  
The Relationship

Herein we examine the relationship between reaction rate and reaction selectivity in iridium-catalysed hydrogen isotope exchange (HIE) reactions directed by Lewis basic functional groups. We have recently develped a directing...

scholarly journals Are Rate and Selectivity Correlated in Iridium-Catalysed Hydrogen Isotope Exchange Reactions?

2021 ◽  
Author(s):  
Daria Timofeeva ◽  
David Lindsay ◽  
William Kerr ◽  
David Nelson
Keyword(s):  
Functional Groups ◽  
Hydrogen Isotope ◽  
Isotope Exchange ◽  
Reaction Rate ◽  
Lewis Base ◽  
Exchange Reactions ◽  
Different Types ◽  
Observed Behaviour ◽  
Directing Group ◽  
The Relationship

Herein we examine the relationship between reaction rate and reaction selectivity in iridium-catalysed hydrogen isotope<br>exchange (HIE) reactions directed by Lewis basic functional groups. We have recently develped a directing group scale that allows semi-quantitative predictions of Lewis base directed selectivity in HIE, formally ranking ‘relative rates’ determined from a structured set of competition experiments. Here, we show that selectivity and rate are in fact not correlated, but that different types of behaviour emerge in competition experiments and that the observed behaviour can be predicted from our established selectivity scale.

scholarly journals Are Rate and Selectivity Correlated in Iridium-Catalysed Hydrogen Isotope Exchange Reactions?

2021 ◽  
Author(s):  
Daria Timofeeva ◽  
David Lindsay ◽  
William Kerr ◽  
David Nelson
Keyword(s):  
Functional Groups ◽  
Hydrogen Isotope ◽  
Isotope Exchange ◽  
Reaction Rate ◽  
Lewis Base ◽  
Exchange Reactions ◽  
Different Types ◽  
Observed Behaviour ◽  
Directing Group ◽  
The Relationship

Herein we examine the relationship between reaction rate and reaction selectivity in iridium-catalysed hydrogen isotope<br>exchange (HIE) reactions directed by Lewis basic functional groups. We have recently develped a directing group scale that allows semi-quantitative predictions of Lewis base directed selectivity in HIE, formally ranking ‘relative rates’ determined from a structured set of competition experiments. Here, we show that selectivity and rate are in fact not correlated, but that different types of behaviour emerge in competition experiments and that the observed behaviour can be predicted from our established selectivity scale.

Hydrogen isotope exchange between D2 and H2O catalyzed by platinum plate

1989 ◽  
Vol 67 (5) ◽  
pp. 857-861 ◽  
Author(s):  
Shin-Ichi Miyamoto ◽  
Tetsuo Sakka ◽  
Matae Iwasaki
Keyword(s):  
Kinetic Model ◽  
Exchange Reaction ◽  
Hydrogen Isotope ◽  
Isotope Exchange ◽  
Reaction Rate ◽  
Hydrogen Adsorption ◽  
Platinum Catalyst ◽  
Isotope Exchange Reaction ◽  
Hydrogen Isotope Exchange ◽  
Supported Platinum

The reaction rate of hydrogen isotope exchange between D2 and H2O catalyzed by platinum plate is studied. The exchange reaction is described with the kinetic model which is the modification of that for the exchange reaction catalyzed by alumina-supported platinum catalyst. For the comparison of experimental results with this model relative amount of the number of sites for hydrogen adsorption was estimated from the initial rate of hydrogen isotope exchange between H2 and D2 on the same surface. The results show that the kinetic model is applicable for the plate catalyst if the number of the sites for hydrogen absorption, which is very sensitive to the surface state of the catalyst, was estimated not from the macroscopic surface area but from our scheme. Keywords: hydrogen isotope exchange reaction, platinum plate as catalyst.

Directed Iridium‐Catalyzed Hydrogen Isotope Exchange Reactions of Phenylacetic Acid Esters and Amides

2019 ◽  
Vol 25 (26) ◽  
pp. 6517-6522 ◽  
Author(s):  
Mégane Valero ◽  
Daniel Becker ◽  
Kristof Jess ◽  
Remo Weck ◽  
Jens Atzrodt ◽  
...  
Keyword(s):  
Hydrogen Isotope ◽  
Isotope Exchange ◽  
Phenylacetic Acid ◽  
Exchange Reactions ◽  
Hydrogen Isotope Exchange ◽  
Acid Esters

Improvement of hydrogen isotope exchange reactions on Li4SiO4 ceramic pebble by catalytic metals

2012 ◽  
Vol 23 (8) ◽  
pp. 936-940 ◽  
Author(s):  
Cheng Jian Xiao ◽  
Chun Mei Kang ◽  
Xiao Jun Chen ◽  
Xiao Ling Gao ◽  
Yang Ming Luo ◽  
...  
Keyword(s):  
Hydrogen Isotope ◽  
Isotope Exchange ◽  
Exchange Reactions ◽  
Hydrogen Isotope Exchange
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