Related Products of 20439-47-8, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.20439-47-8, Name is (1R,2R)-Cyclohexane-1,2-diamine, molecular formula is C6H14N2. In a Article，once mentioned of 20439-47-8
Flexible redox properties of a metal complex are important for redox catalysis. The present study shows that the reaction of a manganese(III) salen complex, which is a well-known oxidation catalyst, with hydroxide ion gives a transient manganese(III) species with drastically lowered redox potential, where the redox difference is -1.21 V. The reaction with cyanide ion gives a stable manganese(III) species with almost the same spectroscopic and redox properties, which was characterized as an anionic [MnIII(salen)(CN)2]- of low-spin S = 1 state, in contrast to the starting MnIII(salen)(OTf) having usual high-spin S = 2 manganese(III). The present study has thus clarified that the drastic redox shift comes from an anionic six-coordinate [MnIII(salen)(X)2]- species where X is either OH- or CN-. Resonance Raman measurements show that the stretching band of the imino group shifts from 1620 to 1597 cm-1 upon conversion from MnIII(salen)(OTf) to [MnIII(salen)(CN)2]-, indicative of lowered C=N double bond character for [MnIII(salen)(CN)2]-. The observed deformation of a salen ligand is a clear indication of an increased electron population on the imino pi?-orbital upon formation of low-spin manganese(III). It was proposed that the electronic structure of [MnIII(salen)(CN)2]- may contain only limited contribution from valence tautomeric [MnIV(salen-Ȣ)(CN)2]-, in which the imino group of a salen ligand is reduced by one-electron via intramolecular electron transfer from low-spin manganese(III). The present study has clarified an unexpected new finding that a salen ligand works as a reservoir for negative charge to stabilize low-spin manganese(III).
One of the oldest and most widely used commercial enzyme inhibitors is aspirin, Related Products of 20439-47-8, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 20439-47-8
Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI