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Formation and Deprotonation Kinetics of the Sitting-Atop Complex of Copper(II) Ion with 5,10,15,20-Tetraphenylporphyrin Relevant to the Porphyrin Metalation Mechanism. Structure of…
- Y. Inada, Yumi Sugimoto, Yuko Nakano, Y. Itoh, S. Funahashi
- ChemistryInorganic chemistry
- 18 September 1998
The present kinetic results have indicated that the SAT complex exists during the course of the metalation process and thatThe SAT complex formation is a rate-determining step.
Spectral Evidence and Kinetics for Formation of the Sitting-Atop Complex of Copper(II) Ion with 5,10,15,20-Tetraphenylporphyrin in Acetonitrile
The kinetic parameters for the formation of the sitting-atop (SAT) complex of the copper(II) ion with 5,10,15,20-tetraphenylporphyrin (H2tpp) were directly determined in acetonitrile. The large ΔH≠…
Thioester synthesis through geoelectrochemical CO2 fixation on Ni sulfides
A prevailing scenario of the origin of life postulates thioesters as key intermediates in protometabolism, but there is no experimental support for the prebiotic CO2 fixation routes to thioesters.…
A facile preparation method for α,α-difluoroalkanecarboxylic acids and esters. A formal difluoromethylene insertion to alkanecarboxylic acids using radical reaction
Total synthesis of a tetracyclic anti-tumor, UCE6.
α,α-Difluroalkanecarboxylic acids: a general synthesis via alkyl radical addition to 1,1-dichloro-2,2-difluoroethylene
Regioselective Synthesis of Bridged Azabicyclic Compounds Using Radical Translocation/Cyclization Reactions of 4-Alkynyl-1-(o-iodobenzoyl)piperidines
A Facile Preparation Method for α,α- Difluoroalkanecarboxylic Acids and Esters. A Formal Difluoromethylene Insertion to Alkanecarboxylic Acids Using Radical Reaction.
Thioester Synthesis by Geoelectrochemical CO2 Fixation on Ni Sulfides
It is demonstrated that, under an electrochemical condition realizable in early ocean hydrothermal systems, nickel sulfide (NiS) gradually reduces to Ni0, thereby drastically enhancing its capability of driving nonenzymatic CO2 fixation.