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.
E-and Z-nomenclature of alkenes On the previous pages, we looked at naming alkenes as cis-and trans-. Misconception Alert! cis Â¹ Z and trans Â¹ E. In general terms there is NO specific relationship between cis and trans / E and Z as they are based on fundamentally different naming rules.he Cahn-Ingold-Prelog priority rules are used for naming geometric isomers (e.g. E-or Z-alkenes) and other stereoisomers (see later). These rules are based on atomic number, and the first point of difference.