Assertion: substitution | /r/HasProperty | steric crowding
Facets:
Source sentences:
text: If there is steric crowding on the substrate near the leaving group, such as at a tertiary carbon center, the substitution will involve an S N 1 rather than an S N 2 mechanism; an S N 1 would also be more likely in this case because a sufficiently stable carbocation intermediary could be formed.