The 2J (13C, H), a measure of bond angle in CH2:CHCH2R (R = MgBr, Li, Na, K), (Z)- and (E)-MeCH:CHCH2K, CH2:CHCH:CHCH2R (R = Li, K), or (E)-hexadienyllithium, is used to assign the % s character in the C-H bonds. This and the 13C NMR chem. shifts indicate ...
1982