A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 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 reactivity of the tetranuclear metallated palladium compound {Pd[mu2-(C6H4) PPh2]Br}4 (1) with different ligands has been investigated with the aim of evaluating the influence of the entering ligand on the nature of the reaction products. The results confirmed the ability of the ligand [(C6H4)PPh2]- to expand a bridging [mu2-] or a chelating [eta2-] coordination mode, depending on the auxiliary ligands present in the complex. Bulky phosphines stabilize mononuclear species of formula {Pd[eta2-(C6H4)PPh2]Br[P]}, with a four-atom metallocycle, while small phosphines dinuclear compounds. The molecular structures of three different metalated palladium compounds have been give determined by single-crystal X-ray crystallography; the tetranuclear {Pd[mu2-(C6H4) PPh2]Cl)4 (2), the dinuclear-{Pd[mu2-(C6H4) PPh2]Br [PMe3]}2 (3), and the mononuclear {Pd[eta2-(C6H4)PPh2]Br[PCBr]}, (PCBr = P(o-BrC6H4)-Ph2) (9) were obtained, the first one by halogen exchange reaction and the others by frame degradation of 1.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Quality Control of: Tri-p-tolylphosphine. In my other articles, you can also check out more blogs about 1038-95-5
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