CHEM10003 Lecture Notes - Lecture 29: Organic Reactions, Spectroscopy, Electronegativity

• School: University of Melbourne
• Department: Chemistry
• Course: CHEM10003
• Professor: Mark Rizzacasa

Document Summary

Reactivity depends on structure, so these are very important: Bond breaking (note: curly arrows = notation of make & break bonds) Homolytically = each atom from the bond gets 1 e- to form 2 radicals (odd e- species) Heterolytically = the more electronegative atom gets 2 e- to form 2 even e- species. Homogenic = 2 radicals (with 1 extra e- each) joins to form 1 bond. Heterogenic = 2 e- donated from 1 atom to form a bond. Reaction type 1-6 = heterolytic bond breaking and heterogenic bond making. Note: ionic reactions = written as dissociated ions. Nucleophiles ( nucleus-loving") = e- rich molecules or ions that has a non-bonding lone-pair of e- ( nu:- ) Also called lewis bases = electron- pair (lone pair) donor. Electrophiles ( electron-loving") = e- deficient ions or molecules. Lack stable octet and accept a pair of electrons (e + ) Also called lewis acids = electron- pair (lone pair) acceptor.