Question
In complicated compounds with polysubstituted double bonds, we use the terms ____ for the isomers.
Answer
In complicated compounds with polysubstituted double bonds, we use the terms E and Z for the isomers.
Note: In this image, one can see that I and II are mirror images of each other and are therefore enantiomers of each other. Similarly, III and IV are enantiomers. However, I and III are not. These are stereoisomers that are not mirror images and are thus diastereomers. Notice that other combinations of non-mirror-image stereoisomers are also diastereomers: I and IV, II and III, and II and IV.
Note: A simple 180° rotation around a vertical axis, as shown in Figure 2.11, allows the compound to be superimposed upon its mirror image.
Note: For example, the C-1 carbon atom in 1-bromo-1-chloroethane has four different substituents. As shown in Figure 2.10, this molecule is chiral because it is not superimposable on its mirror image.
Note: Chirality can also be thought of as handedness. In fact, one of the easiest visualizations of chirality is to think of your own hands, as shown in Figure 2.9. Although essentially identical, your left hand will not be able to fit into a right-handed glove.
Keep this card coming back until it sticks
Sign up free and spaced repetition will bring Chapter 2: Isomers cards back right before you forget them.
Continue studying — sign up freeMore cards in Chapter 2: Isomers
____ are characteristics of processes that don’t change the composition of matter, such as melting point, boiling point, solubility, odor,…
Physical properties are characteristics of processes that don’t change the composition of matter, such as ____.
____ have to do with the reactivity of the molecule with other molecules and result in changes in chemical composition.
Chemical properties have to do with ____.
In organic chemistry, the chemical properties of a compound are generally dictated by the ____ in the molecule.
The only thing that ____ isomers share is their molecular formula.