Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent£¬ Quality Control of: Titanocenedichloride, Which mentioned a new discovery about 1271-19-8
Electronic and Steric Design of Novel Group 13 Lewis Acids and Their Synthesis via Metal-Tin Exchange Reactions (1): Toward the Ideal Olefin Polymerization Catalyst
Group 13 Lewis acids have long played a leading role as catalysts in organic synthesis, extending from the discovery of AlCl3-catalysis by Friedel and Crafts in 1877 through the Aufbau-synthesis of unsolvated aluminum alkyls from ethylene by Ziegler in 1952 and culminating in the discovery of poly(methylaluminoxane) (MAO) cocatalysis of olefin polymerization by Sinn and Kaminsky in 1976. In our current work we present how electronic and steric contributions of the ligands attached to the particular Group 13 metal can modulate the resultant Lewis acidity. The inherent Lewis acidity of the Group 13 metal center itself is further dependent upon the extent that its available npz-orbital might interact with adjacent unshared or pi-electrons of the ligand system. In order to evaluate the effect of such electronic factors on their Lewis acidity, both a series of bidentate Group 13 organoboron and organoaluminum candidate acids, as well as their antiaromatic metallole analogs, have been synthesized by exchange reactions between the corresponding organotin compound and the appropriate metal halide. Their Lewis acidity has been evaluated based upon their efficacy as a cocatalyst with titanocene(IV) methyl chloride or titanocene(IV) dichloride in effecting the polymerization of ethylene.
Because enzymes can increase reaction rates by enormous factors and tend to be very specific, Quality Control of: Titanocenedichloride, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 1271-19-8
Reference£º
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI