Kumar, Akhilesh’s team published research in Polyhedron in 172 | CAS: 4760-35-4

Polyhedron published new progress about 4760-35-4. 4760-35-4 belongs to imidazoles-derivatives, auxiliary class Chloride,Benzimidazole, name is 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole, and the molecular formula is C9H9ClN2, Application In Synthesis of 4760-35-4.

Kumar, Akhilesh published the artcileStructure, magnetism and reactivity of a {MnIII(μ-O)2MnIV}3+ core towards oxidation of phenols, Application In Synthesis of 4760-35-4, the publication is Polyhedron (2019), 226-235, database is CAplus.

Two complexes [(L)2MnII(OClO3)(MeCN)](ClO4)·CH3CN (1) and [(L)4MnIII/IV2(μ-O)2](ClO4)3·2CH3CN·Et2O (2), where L is 2-((1H-pyrazol-1-yl)methyl)-1-methyl-1H-benzimidazole, were synthesized, structurally characterized, UV-visible and EPR spectral properties, variable-temperature (2-300 K) magnetic susceptibility and redox behavior studied. Structural anal. reveals that the {MnIII(μ-O)2MnIV}3+ core in 2 is an example of delocalized class III system. Complex 1 has S = 5/2 ground-state. The MnIII and MnIV centers in 2 are antiferromagnetically coupled (J = -192 cm-1) and has S = 1/2 ground-state. Complex 2 exhibits characteristic 16-line EPR spectrum (120 K) centered at g ≈ 2. Reactivity of 2 towards p-X-2-tert-butylphenols (X = H, Me, OMe, tBu) was studied. The oxidation of phenols generate phenoxyl radical (2,4,6-tri-tert-butylphenol exhibits EPR signal due to radical)/radical-coupled bis-phenol product (in the case of 2,4-di-tert-butylphenol, DTBP). Kinetic experiments have allowed the authors to evaluate second-order rate constant values for the faster initial step (k2 × 10-2 M-1s-1) for p-X-2-tert-butylphenols: 0.6 (X = H), 1.95 (Me), 3.0 (OMe), 1.85 (tBu) and for the slower second step (k2 × 10-3 M-1s-1) for p-X-2-tert-butylphenols: 0.9 (X = H), 2.5 (Me), 4.0 (OMe). Reaction between {MnIII(μ-O)2MnIV}3+ of 2 and phenols proceeds via hydrogen atom transfer mechanism to produce oxidation products. Initial reaction supposedly generates {MnIII(O)(OH)MnIII}3+ species, which finally ends up as (L)-coordinated MnII species (ESI-MS spectrum for the reaction between 2 and DTBP).

Polyhedron published new progress about 4760-35-4. 4760-35-4 belongs to imidazoles-derivatives, auxiliary class Chloride,Benzimidazole, name is 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole, and the molecular formula is C9H9ClN2, Application In Synthesis of 4760-35-4.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem