Butadiene, , is a planar molecule that has the following carbon-carbon lengths:
(a) Predict the bond angles around each of the carbon atoms and sketch the molecule.
(b) From left to right, what is the hybridization of each carbon atom in butadiene?
(c) The middle C-C bond length in butadiene (1.48 angstroms) is a little shorter than the average C-C single bond (1.54 angstroms). Does this imply that the middle C-C bond in butadiene is weaker or stronger than the average C-C single bond?
(d) Based on your answer for part (c), what additional aspects of bonding might support the shorter middle C-C bond?
