Matches in SemOpenAlex for { <https://semopenalex.org/work/W1980024871> ?p ?o ?g. }
Showing items 1 to 70 of
70
with 100 items per page.
- W1980024871 endingPage "189" @default.
- W1980024871 startingPage "185" @default.
- W1980024871 abstract "Abstract The kinetics of the oxidation of 2-thiopyrimidine (TP) by IrCl 2− 6 and IrBr 2− 6 , and 2-thiouracil (TU) by IrCl 2− 6 follow a second-order rate law, first-order with respect to both the concentration of the oxidant and reductant. The second-order rate constants at 25.0 °C and at μ = 0.10 M are: 3.30 M −1 sec −1 for TP+IrCl 3− 6 at pH 2.10, 0.187 M −1 sec −1 for TU + IrCl 2− 6 at pH 2.10, and 344 M −1 sec −1 for TP + IrBr 2− 6 at pH 5.3. A pH-rate profile is observed to have nearly a constant rate at pH 2.1 to 3.5 and a rapid increase in rate from pH 3.5 to 5.5. This is accounted for by the equilibrium pKa of the thiols and by the higher reactivity of the mercaptide anions The activation parameters calculated from the temperature dependence studies are: ΔH ≠ = 7.5 kcal/ mole, Δs ≠ = −31.0 e.u. for the TP + IrCl 2− 6 , and ΔH≠ = 10.1 kcal/mole, ΔS≠ = −27.8 e.u. for the TU + IrCl 2− 6 . A free radical mechanism is postulated to account for the above observed kinetics" @default.
- W1980024871 created "2016-06-24" @default.
- W1980024871 creator A5034747948 @default.
- W1980024871 creator A5038534340 @default.
- W1980024871 creator A5059682948 @default.
- W1980024871 creator A5063975158 @default.
- W1980024871 date "1980-01-01" @default.
- W1980024871 modified "2023-10-16" @default.
- W1980024871 title "The oxidation of 2-thiopyrimidine and 2-thiouracil by Ir(IV) complexes" @default.
- W1980024871 cites W1998371901 @default.
- W1980024871 cites W2001804306 @default.
- W1980024871 cites W2006474128 @default.
- W1980024871 cites W2024736741 @default.
- W1980024871 cites W2034383355 @default.
- W1980024871 cites W2041309256 @default.
- W1980024871 cites W2042098734 @default.
- W1980024871 cites W2051775422 @default.
- W1980024871 cites W2053402289 @default.
- W1980024871 cites W2072332433 @default.
- W1980024871 cites W2074179189 @default.
- W1980024871 cites W2074661747 @default.
- W1980024871 cites W2083654355 @default.
- W1980024871 cites W2126794298 @default.
- W1980024871 cites W2152710629 @default.
- W1980024871 cites W2322844292 @default.
- W1980024871 cites W3136528108 @default.
- W1980024871 cites W3139161900 @default.
- W1980024871 doi "https://doi.org/10.1016/s0020-1693(00)84189-4" @default.
- W1980024871 hasPublicationYear "1980" @default.
- W1980024871 type Work @default.
- W1980024871 sameAs 1980024871 @default.
- W1980024871 citedByCount "12" @default.
- W1980024871 countsByYear W19800248712013 @default.
- W1980024871 countsByYear W19800248712014 @default.
- W1980024871 countsByYear W19800248712019 @default.
- W1980024871 crossrefType "journal-article" @default.
- W1980024871 hasAuthorship W1980024871A5034747948 @default.
- W1980024871 hasAuthorship W1980024871A5038534340 @default.
- W1980024871 hasAuthorship W1980024871A5059682948 @default.
- W1980024871 hasAuthorship W1980024871A5063975158 @default.
- W1980024871 hasConcept C126322002 @default.
- W1980024871 hasConcept C185592680 @default.
- W1980024871 hasConcept C2776501357 @default.
- W1980024871 hasConcept C526584372 @default.
- W1980024871 hasConcept C71924100 @default.
- W1980024871 hasConceptScore W1980024871C126322002 @default.
- W1980024871 hasConceptScore W1980024871C185592680 @default.
- W1980024871 hasConceptScore W1980024871C2776501357 @default.
- W1980024871 hasConceptScore W1980024871C526584372 @default.
- W1980024871 hasConceptScore W1980024871C71924100 @default.
- W1980024871 hasLocation W19800248711 @default.
- W1980024871 hasOpenAccess W1980024871 @default.
- W1980024871 hasPrimaryLocation W19800248711 @default.
- W1980024871 hasRelatedWork W1531601525 @default.
- W1980024871 hasRelatedWork W1974498130 @default.
- W1980024871 hasRelatedWork W1990781990 @default.
- W1980024871 hasRelatedWork W1994695231 @default.
- W1980024871 hasRelatedWork W2606230654 @default.
- W1980024871 hasRelatedWork W2607424097 @default.
- W1980024871 hasRelatedWork W2748952813 @default.
- W1980024871 hasRelatedWork W2899084033 @default.
- W1980024871 hasRelatedWork W2948807893 @default.
- W1980024871 hasRelatedWork W2778153218 @default.
- W1980024871 hasVolume "46" @default.
- W1980024871 isParatext "false" @default.
- W1980024871 isRetracted "false" @default.
- W1980024871 magId "1980024871" @default.
- W1980024871 workType "article" @default.