For the Expt6 "Aldol Condensation":
Identify the chemically inequivalent and equivalent C's in the dibenzalacetone structure and how many 13C-NMR peaks are expected.
a) Chemically inequivalent carbons: Carbons in different chemical environments due to different attached functional groups.
Chemically equivalent carbons: Carbons in the same chemical environment due to identical attached functional groups.
Expected number of 13C-NMR peaks: 10 peaks due to the presence of 10 different carbon environments.
b) Chemically inequivalent carbons: Carbons attached to different substituents on the benzene rings.
Chemically equivalent carbons: Carbons within the same benzene ring.
Expected number of 13C-NMR peaks: 8 peaks due to the presence of 8 different carbon environments.
c) Chemically inequivalent carbons: Carbons attached to different substituents on the aliphatic chain.
Chemically equivalent carbons: Carbons within the same aliphatic chain.
Expected number of 13C-NMR peaks: 6 peaks due to the presence of 6 different carbon environments.
d) Chemically inequivalent carbons: Carbons with different hybridization states.
Chemically equivalent carbons: Carbons with the same hybridization states.
Expected number of 13C-NMR peaks: 4 peaks due to the presence of 4 different carbon environments.