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.
It is important to note that the two methods are different (i.e. they are based on different rules) and they are NOT interchangeable, see below for an example. The cis- / trans-style is based on the longest chain whereas the E/Z style is based on a set of priority rules. You need to know both styles.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.