Abstract
This work presents two square-planar Co(iii) complexes within a N4 coordination sphere created by two related pyrrolecarboxamide ligands. Both complexes functioned as catalysts for the hydrazine-mediated reduction of aromatic, heterocyclic, as well as aliphatic nitro substrates. Binding studies provided evidence that the square-planar Co(iii) complexes bind two equivalents of a substrate whereas mechanistic studies established the involvement of a Co3+-Co2+ based redox cycle in the catalysis. The Co(iii) complex having electron-withdrawing -Cl substituents on the ligand was noted to be a much better catalyst than the one with electron-donating -CH3 substituents.
Original language | British English |
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Pages (from-to) | 324-335 |
Number of pages | 12 |
Journal | Inorganic Chemistry Frontiers |
Volume | 4 |
Issue number | 2 |
DOIs | |
State | Published - Feb 2017 |