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Expedited Proton Relay in Enzyme-Inspired Cobaloximes Facilitate Organic Transformations.
Panja, Subir; Nandi, Chandan; Guria, Somnath; Pan, Avishek; Das, Chandan; Das, Srewashi; Ghorai, Santanu; Dutta, Arnab; Maiti, Debabrata.
Afiliação
  • Panja S; Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India.
  • Nandi C; Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India.
  • Guria S; Interdisciplinary Program in Climate Studies, IIT Bombay, Powai, Mumbai, 400076, India.
  • Pan A; Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India.
  • Das C; Interdisciplinary Program in Climate Studies, IIT Bombay, Powai, Mumbai, 400076, India.
  • Das S; Interdisciplinary Program in Climate Studies, IIT Bombay, Powai, Mumbai, 400076, India.
  • Ghorai S; Interdisciplinary Program in Climate Studies, IIT Bombay, Powai, Mumbai, 400076, India.
  • Dutta A; Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India.
  • Maiti D; Interdisciplinary Program in Climate Studies, IIT Bombay, Powai, Mumbai, 400076, India.
Chemistry ; 30(49): e202401785, 2024 Sep 02.
Article em En | MEDLINE | ID: mdl-38946611
ABSTRACT
Developing a water-soluble, oxygen-tolerant, and acid-stable synthetic H2 production catalyst is vital for renewable energy infrastructure. To access such an effective catalyst, we strategically incorporated enzyme-inspired, multicomponent outer coordination sphere elements around the cobaloxime (Cl-Co-X) core with suitable axial coordination (X). Our cobaloximes with axial imidazole or L-histidine coordination in photocatalytic HAT including the construction of anilines via a non-canonical cross-coupling approach is found superior compared to commonly used cobaloxime catalysts. The reversible Co(II)/Co(I) process is influenced by the axial N ligand's nature. Imidazole/L-histidine with a higher pKa promptly produces H2 upon irradiation, leading to the improved reactivity compared to previously employed axial (di)chloride or pyridine analogue.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article