9.2 Nucleophilic Aliphathic Substitution

sn2

only occurs on sp3 carbons

bimolecular reaction

reaction where two species are involved in the rate determining step

n/a nucleophilic attack and leaving group departure happen at the same time 

regioselectivity of sn2

inversion of configuration 

stereoselectivity of sn2

inversion of configuration

backside attack

1

there is only () activation energy barrier in an sn2 reaction

sn1

unimolecular nucleophilic substitution reaction

unimolecular reaction

reaction where only one species is involved in the rate determining step

solvolysis

nucleophilic substitution where the solvent is also the nucleophile

n/a 

regioselectivity of sn1

n/a

stereoselectivity of sn1

ionization of a leaving group

both of the electrons are going to one side (the side of the leaving group because it is the most stable group to accept both of the electrons)

heterolytic bond cleavage

breaking of a bond in a way that one atom takes both electrons 

results in a positive and negative ion

solvent

bulk component of a reaction that dissolves the minor component (solute)