Linus Pauling proposed that the double bond results from two equivalent banana bonds , while Hückel proposed the currently prevailing view , as presented in most textbooks , which represents the double bond as a combination of a sigma bond plus a pi bond .
Linus Pauling proposed that the double bond results from two equivalent bonds , Linus Pauling . 
 Erich Hückel proposed a representation of the double bond as a combination of a sigma bond plus a pi bond .