Conformations of 1,3-Butadiene s-trans conformer is more stable than the s-cis by 2.3 kcal. Easily interconvert at room temperature. s-trans S-CIS Chaper 15 12Chaper 15 12 Conformations of 1,3-Butadiene • s-trans conformer is more stable than the s-cis by 2.3 kcal. • Easily interconvert at room temperature. H H H H H H s-trans s-cis H H H H H H =>