STEREOCHEMISTRY HOPEFULLY MADE SIMPLER

STEREOCHEMISTRY HOPEFULLY MADE SIMPLER - STEREOCHEMISTRY...

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STEREOCHEMISTRY HOPEFULLY MADE SIMPLER Stereoisomers -molecules that have the same constitution, but different disposition of groups in space. In other words the atoms are connected to each other in the same way, they only differ with respect to relative orientation in three--dimensional space. Chiral-General Definition -Any object that is not superimposable on its mirror image. Your hands are chiral, that is why you need two different leather gloves, one that only fits your right hand, and one that only fits your left hand. If your hands were superimposable, then you would only need one kind of glove and it would fit both hands. Chiral-Chemistry Definition; Atom -Any tetrahedral carbon atom that has four different substituents is a chiral center . Any tetrahedral carbon atom that has four different substituents is a chiral center (it was worth repeating). This is a simple consequence of geometry; there are two different ways to place four different substituents in a tetrahedral arrangement. Looking for four different substituents on a single carbon atom is the easiest way to identify a chiral molecule. It is worth mentioning that a chiral center is a special type of a more general situation called a stereocenter. A stereocenter is any atom in a molecule for which exchanging two groups creates a different stereoisomer. All chiral centers are stereocenters, however, not all stereocenters are chiral centers as we will encounter examples of this in later chapters. Do not sweat this detail at this point. The bottom line is that when you have a
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STEREOCHEMISTRY HOPEFULLY MADE SIMPLER - STEREOCHEMISTRY...

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