The spatial arrangement of two conjugated double bonds about the intervening single bond is described as s-cis if @[email protected] and s-@[email protected] if @[email protected] This term should not be applied to other systems such as N-alkyl @[email protected] (use E/Z or sp/ap).
PAC, 1996, 68, 2193. (Basic terminology of stereochemistry (IUPAC Recommendations 1996)) on page 2217 [Terms] [Paper]