The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1038-95-5, Name is Tri-p-tolylphosphine, molecular formula is C21H21P. In a Article，once mentioned of 1038-95-5, Quality Control of: Tri-p-tolylphosphine
The ligand substitution kinetics of a series of carbonylmanganese cations MeCpMn(CO)//2L** plus with L equals 3- and 4-substituted pyridine ligands are measured for a variety of phosphine nucleophiles N of differing steric and electronic properties. The unified free energy relationship is shown for the first time to accommodate all the extensive rate data, if the steric effect is evaluated by Tolman’s cone angles for the phosphines, and the electronic effects are evluated by the acid-base dissociation constants of the pyridine ligands and the phosphine nucleophiles. The range of second-order rate constants k//1 for ligand substitution of MeCpMn(CO)//2L** plus extends over four decades from 3. 0 to 2 multiplied by 10**4 M** minus **1 s** minus **1. The mechanism of ligand substitution of metal carbonyls is central to the successful catalysis of a variety of important processes leading to the reduction of carbon monoxide.
The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 1038-95-5 is helpful to your research., category: chiral-phosphine-ligands
Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate