Miss Hemingway is identified with the Babe line of fragrances. Miss Falana, who was seen in televison commercials in a skinâtight tigerstriped costume, did Tigress commercials for two years, from 1974 through 1976. âSince then, we've used just models,â a company aide said.âNot that Lola and Tamara aren't models. It's just that they are name models.ââ¢.
The E-Z system. The problem with the cis-trans system for naming geometric isomers. Consider a simple case of geometric isomerism which we've already discussed on the previous page. You can tell which is the cis and which the trans form just by looking at them. All you really have to remember is that trans means across (as in transatlantic or transcontinental) and that cis is the opposite. It is a simple and visual way of telling the two isomers apart.
Molecule C can exist as cis-trans isomers, because this molecule has a carbon to carbon double bond, and it also has a chlorine atom and a hydrogen atom (two different groups) attached to each of the carbons involved in the double bond. A. (cis-hex-2-ene) (trans-hex-2-ene) Cis-trans isomers occur in molecules that have carbon-to-carbon double bonds because rotation of the atoms about the axis of the carbon-to-carbon double bond is restricted.