lewis base वाक्य

Lewis based her identification on a number of factors including Despencer's relationship to the Abbey's benefactors, the age of the remains and the cause of death.
In rare cases, CO 2 binds to metals as a Lewis base through its oxygen centres, but such adducts are weak and mainly of theoretical interest.
The lone pair of electrons in such complexes is available for bonding, however, and therefore the complex itself can act as a Lewis base or ligand.
It is a Lewis acid and can react with a Lewis base, such as pyridine in a non-aqueous medium such as dichloromethane ( Collins reagent ).
This is particularly so with oxohalides of coordination number 3 or 4 which, in accepting one or more electron pairs from a Lewis base, become 5-or 6-coordinate.

The melting point is 155 �C . The [ FeCl 6 ] 3 " acts as a Lewis acid, while the ammonium group acts as a Lewis base.
The proposed tetracoordinate aluminum prevent the imide acting as a chelating Lewis base, while enhance the ?-vinyl proton of the dienphile and the benzylic proton of the catalyst.
Another contributing factor to halogen bond strength comes from the short distance between the halogen ( Lewis acid, XB donor ) and Lewis base ( XB acceptor ).
This locks the carbonyl and the Lewis base substituent in an eclipsed conformation, and the nucleophile will then attack from the side with the smallest free ?-carbon substituent.
:Actually reading about sweetness ( the criteria for hydrophobic component and a hydrogen bond donor and a Lewis base 0.3 nm apart ) made the light click on.