Electric Literature of 52522-40-4, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.52522-40-4, Name is Tris(dibenzylideneacetone)dipalladium-chloroform, molecular formula is C52H43Cl3O3Pd2. In a Article，once mentioned of 52522-40-4
Pd(II) allyl and Pd(0) fumaronitrile complexes bearing pyridyl-dithioether-based dendrimers as ancillary ligands have been synthesized and fully characterized by means of NMR spectrometry, elemental analysis, and MALDI-TOF technique. The fluxional behavior of the species was investigated by studying the 1H NMR spectra recorded in CD2Cl2 at variable temperature and interpreted on the basis of a windshield-wiper motion of the dendritic wings which alternatively coordinate at the metal core. The reactivity of piperidine on the Pd(II) allyl substrates to give the allylamine derivative and the corresponding Pd(0) fumaronitrile species was also studied. The second-order rate constants k2 and the equilibrium constants KE relating to piperidine attack on the allyl fragment and to the concomitant displacement of the dendrimer ligand by piperidine, respectively, were determined and discussed taking into account the increasing dendritic size. Surprisingly, no macroscopic effects are observed on going from the model molecule to the second-generation dendritic substrates, and only with the third generation dendritic wedge complex are remarkable variations in the rate and equilibrium constants observed. We therefore advance the hypothesis that a sudden rearrangement at this stage occurs in solution. Such a rearrangement would induce an increase of steric hindrance at the allyl fragment and a concomitant distortion of the ligand in the environment of the metal core, thereby justifying the decrease of k2 and the increase of KE values.
A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 52522-40-4
Reference：
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method