Effect of ring size in macrocyclic dinuclear manganese(II) complexes upon their structure, properties and reactivity towards H2O2

Synthesis, characterisation and catalase-like activity of dimanganese(III) complexes of 1,5-bis(5-X-salicylidenamino)pentan-3-ol (X=nitro and chloro)

“…This signal declined to the one of the stable Mn III 2 complex once all H 2 O 2 had been consumed. Similar spectra had previously been observed in the catalytic [15,16,22,23,25].…”

New dimanganese(III) complexes of pentadentate (N2O3) Schiff base ligands with the [Mn2(μ-OAc)(μ-OR)2]3+ core: Synthesis, characterization and mechanistic studies of H2O2 disproportionation

“…20 nm superimposed the band at 460 nm. Similar multiplets had previously been observed as intermediate in the catalytic disproportionation of H 2 O 2 by several dimanganese complexes, and have been assigned to an oxo-to-manganese LMCT coupled to the m Mn@O vibration [45][46][47][48][49]. Once O 2 evolution had ceased, this multiplet, responsible for the pink color of the solution, declined to the band at 460 nm (e 460 = 6500 M À1 cm À1 , based on [L 2 ]).…”

Electro‐ and Photoinduced Formation and Transformation of Oxido‐Bridged Multinuclear Mn Complexes

“…One example involves a series of dinucleating macrocycles containing two phenolate entities (Figure 8, b). An electrochemical study of their Mn 2 II complexes indicated that for most of them the corresponding stable mixed‐valent species Mn 2 II,III could be obtained by electrolysis 115,116. A more detailed electrochemical behaviour has been reported for complexes formed with the unsymmetrical hexadentate phenol‐based ligand described in Figure 9 (a) 117…”