Application of 3105-95-1, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 3105-95-1, Name is H-HoPro-OH, SMILES is O=C([C@H]1NCCCC1)O, belongs to catalyst-ligand compound. In a article, author is Zhou, Yiqun, introduce new discover of the category.
Isospecific Polymerization of Methyl Methacrylate by Intramolecular Rare-Earth Metal Based Lewis Pairs dagger
A series of cationic rare-earth aryloxide complexes, i.e., [LREOAr’](+)[B(C6F5)(4)](-) (L = CH3C(NAr)CHC(CH3)(NCH(R)CH2PPh2); RE = Y, Lu; Ar’ =2,6-tBu(2)-C6H3, 2,6-(PhCMe2)(2)-4-Me-C6H2; Ar = 2,6-iPr(2)-C6H3, 2,6-(Ph2CH)(2)-4-iPr-C6H2; R = H, CH3, iPr, Ph), were prepared and applied to the Lewis pair polymerization of methyl methacrylate (MMA). The stereoregularity of the resulting PMMA was significantly affected by the R substituent on the pendant arm of the tridentate NNP ligand, and was found to increase with increase in the steric hindrance of R. When using a Ph group as R, the Y complex produced a highly isotactic polymer with an mm value of 95% and a T-g of 54.6 C-o. In contrast, the steric hindrance of the Ar and Ar’ groups had no effect on the tacticity of the resulting polymer, presumably because these two substituents were situated such that they pointed outward from the cyclic intermediates. Kinetics studies demonstrated that the polymerization was a first-order process with regard to the monomer concentration prior to catalyst deactivation. End group analysis indicated that the polymerization was accompanied by two possibly competing chain-termination side reactions that proceeded via intramolecular backbiting cyclization.
Application of 3105-95-1, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 3105-95-1.
Reference:
Metal catalyst and ligand design,
,Ligand Template Strategies for Catalyst Encapsulation – NCBI