diphosphine sentence in Hindi
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- It is an example of a chiral diphosphine used in asymmetric hydrogenation.
- It is classified as a diphosphine ligand in coordination chemistry and homogeneous catalysis.
- It can be generated from diphosphine but is highly unstable at room temperature:
- The application of diphosphine ligands to catalysts is not limited to the process of hydroformylation.
- The compound is used as a bulky and highly basic diphosphine ligand in coordination chemistry.
- Diphosphine ligands with bite angles of over 120?are obtained using a bulky, stiff diphosphine backbones.
- Diphosphine ligands with bite angles of over 120?are obtained using a bulky, stiff diphosphine backbones.
- "' Chiraphos "'is a diphosphine employed as a ligand in organometallic chemistry.
- The bite angle of a diphosphine ligand also indicates the distortion from the ideal geometry of a complex based on VSEPR models.
- Henri Kagan developed DIOP, an easily prepared C 2-symmetric diphosphine that gave high ee's in certain reactions.
- The use of diphosphine ligands in catalysis has allowed the optimization of industrial processes and has led to the development of new catalytic systems.
- Diphosphine ligands such as dppe, which has a bite angle of about 90? span the equatorial and apical positions ( AE isomer ).
- As an independent scientist at the University of Toronto, he developed a rational approach to chiral diphosphine ligands, the premier member being chiraphos.
- For the above example, the unwanted ?-hydride elimination is prevented by using a diphosphine where the two phosphorus atoms are fixed apart in space.
- Although the parameter can be applied generally to any chelating ligand, it is commonly applied to describe diphosphine ligands, which can adopt a wide range of chelate ring sizes.
- Furthermore, studies using Xantphos ligands ( ligands with bulky backbones ) in hydroformylation have indicated an increase in the rate of catalysis in metal complexes that contain diphosphine ligands with larger bite angles.
- Developed by Noyori, BINAP ( 2, 2'- diphenylphosphino-1, 1'- binaphthyl ) is a family of chiral diphosphine ligands featuring two triarylphosphine moieties installed on a binaphthalene backbone.
- In an effort to create rhodium complexes in which the phosphine ligands preferentially occupy the equatorial positions, the use of diphosphine ligands with wide bite angles such as BISBI ( Figure 5 ) has been investigated.
- Conversion of ethylene to diethyl ketone using a cobalt carbonyl, while the reaction used a cobalt carbonyl diphosphine complex for clarity the reaction has been drawn out, assuming that a cobalt carbonyl is responsible for the reaction
- An early demonstration of this approach was the Rh-catalyzed hydrogenation of enamides as precursors to the drug L-DOPA . To achieve asymmetric reduction, these catalyst are made chiral by use of chiral diphosphine ligands.
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