CHE 201LLR Lecture Notes - Lecture 3: Lewis Acids And Bases, Organic Reactions, Acid Dissociation Constant

• School: University at Buffalo
• Department: Chemistry
• Course: CHE 201LLR
• Professor: elizabeth clizbe

Document Summary

Electron deficient compounds have atoms that are short of an octet of electrons. Electron deficient compounds act as lewis acids in order to fulfill their valence-shell octet. A tool for keeping track of electron pairs in a chemical reaction. The formation of a bond is described by a flow of electrons from the electron donor (lewis base) to the electron acceptor (lewis acid) The electron flow is indicated by a curved arrow drawn from the electron source to the electron acceptor. Here the b-f bond that breaks is the source of the electron pair that is transferred to f- Note that in going from the reactants to the products that the total charge is conserved. Donation of electrons to atoms that are not electron-deficient. An electron pair must depart from the atom receiving an electron pair. Here, the donated electron pairs originate from a bond. Imagine the bond as hinged to the transferred atom (the h of the al-h bond)