Alkanes and Cycloalkanes (Chapter 2 and parts of Chapter 7)
l. Hydrocarbons = compounds that contain only C and H (2.1)
Alkanes = hydrocarbons with single bonds only
Alkenes = hydrocarbons with at least one double bond
Alkynes = hydrocarbons with at least
For each compound below, draw both of the chair conformations. Then tell which one is more
stable and Why.
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These two conformations are equally
‘ Resonance Rules
Resonance is a way of showing electron delocalization in a molecule by drawing more than one
correct Lewis structure (which would then be called ”resonance structures”) and then
. considering the true structure to be a composite or ”reso
Stereochemistry (Chapter 6 in Loudon 5th edition)
.1. Chiral—“handed;" not superimposible on its mirror image.
2. Achiral—not chiral. .
3. isomers—different compounds with the same molecular formula.
4. Constitutional isomers
Practice with Resonance Structures:
1) Draw all possible (reasonable) resonance structures for the molecules shown below. Will it
react with a positively charged compound or a negatively charged compound (or both)? Where
will it react? If the most stable