Alkali-metal Bases in Catalytic Hydrogen Isotope Exchange Processes
نویسندگان
چکیده
The preparation of compounds labeled with deuterium or tritium has become an essential tool in different research fields. Hydrogen isotope exchange (HIE) offers a direct access to said compounds, introducing...
منابع مشابه
Highly active iridium(I) complexes for catalytic hydrogen isotope exchange.
Practically convenient methods have been developed for the preparation of new iridium complexes, possessing bulky N-heterocyclic carbene and phosphine ligands; these routinely handled complexes are highly active catalysts within directed hydrogen isotope exchange processes.
متن کاملHydrogen Isotope Exchange Reaction
polarization causes Q1ftf partly to cance12 Qu' and so to reduce the calculated MO approximation DNQ, making it agree better with the observed value.2~ This improvement most probably much outweighs the contrary effects obtained by optimizing Z*. The effect on DNQ of using polarized AO's is quite different in the AO than in the MO approximation. Referring to an earlier paragraph on the variation...
متن کاملIsotope effects in peptide group hydrogen exchange.
Kinetic and equilibrium isotope effects in peptide group hydrogen exchange reactions were evaluated. Unlike many other reactions, kinetic isotope effects in amide hydrogen exchange are small because exchange pathways are not limited by bond-breaking steps. Rate constants for the acid-catalyzed exchange of peptide group NH, ND, and NT in H2O are essentially identical, but a solvent isotope effec...
متن کاملApplication of alkali metal-doped carbons for recovery and isotope separation of hydrogen gas
Alkali metals are able to intercalate graphite expanding carbon-carbon interlayer distance along c-direction [1]. The resulting compound, for example RbC24, has nanospace, whose size is comparable to those of small molecules such as hydrogen, nitrogen, methane, etc. Watanabe et al. [2,3] found out that MC24 (M = K, Rb, Cs) is able to absorb hydrogen up to saturated composition of MC24(H2)2 at 7...
متن کاملHydrogen Isotope Fractionation in Aqueous Alkali Halide Solutions
The D/H ratios of hydrogen gas in equilibrium with aqueous alkali halide solutions were determined at 25 °C, using a hydrophobic platinum catalyst. The hydrogen isotope effect between the solution and pure water changes linearly with the molality of the solution at low concentrations, but deviates from this linearity at higher concentration for all alkali halide solutions. The magnitude of the ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Catalysis Science & Technology
سال: 2023
ISSN: ['2044-4761', '2044-4753']
DOI: https://doi.org/10.1039/d3cy00825h