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Stereoisomers are molecules that have the same molecular formula and connectivity but atoms are orientated differently in space. Stereoisomers can be enantiomers or diastereomers of each other depending on whether or not they are mirror images of each other. Enantiomers are nonsuperimposible mirror images of each other and diastereomers are not. We differentiate the two isomer be assigning each isomer stereochemistry designations: cis and trans, E/L, and R and S. This part of the experiment will introduce you to stereochemistry. When determining the type of isomer, sometimes you will have to determine the priority of your substitutents. Priority is assigned based on atomic numbers. Those that have higher priority will be assigned priority number closer to 1 . If two groups have the same priority, keep moving out until you find an atom that have a different atomic number. A. Geometric Isomers (Cis-trans isomers) Cis and trans isomers are shown for only cyclic rings and alkenes. Cis means same side. III. Stereochemistry A. Cis/rans Isomer Skeletal Structure (3 pts) IUPAC name (include stereochemistry) (2 pts) Skeletal Structure (3 pts) IUPAC name (include stereochemistry) (2 pts) Skeletal Structure (3 pts) IUPAC name (include stereochemistry) (2pts) Skeletal Structure (3 pts) IUPAC name (include stercochemistry) (2 pts) B. E/Z system Skeletal Structure ( 3 pts) IUPAC name (include stereochemistry) (2 pts) Skeletal Structure (3 pts) IUPAC name (include stereochemistry) (2 pts) C. R and S Skeletal Structure ( 3 pts) IUPAC name (include stereochemistry) (2pt) Skeletal Structure ( 3pts) IUPAC name (include stereochemistry) (2pt) Stereoisomers are molecules that have the same molecular formula and connectivity but atoms are orientated differently in space. Stereoisomers can be enantiomers or diastereomers of each other depending on whether or not they are mirror images of each other. Enantiomers are nonsuperimposible mirror images of each other and diastereomers are not. We differentiate the two isomer be assigning each isomer stereochemistry designations: cis and trans, E/L, and R and S. This part of the experiment will introduce you to stereochemistry. When determining the type of isomer, sometimes you will have to determine the priority of your substitutents. Priority is assigned based on atomic numbers. Those that have higher priority will be assigned priority number closer to 1 . If two groups have the same priority, keep moving out until you find an atom that have a different atomic number. A. Geometric Isomers (Cis-trans isomers) Cis and trans isomers are shown for only cyclic rings and alkenes. Cis means same side. III. Stereochemistry A. Cis/rans Isomer Skeletal Structure (3 pts) IUPAC name (include stereochemistry) (2 pts) Skeletal Structure (3 pts) IUPAC name (include stereochemistry) (2 pts) Skeletal Structure (3 pts) IUPAC name (include stereochemistry) (2pts) Skeletal Structure (3 pts) IUPAC name (include stercochemistry) (2 pts) B. E/Z system Skeletal Structure ( 3 pts) IUPAC name (include stereochemistry) (2 pts) Skeletal Structure (3 pts) IUPAC name (include stereochemistry) (2 pts) C. R and S Skeletal Structure ( 3 pts) IUPAC name (include stereochemistry) (2pt) Skeletal Structure ( 3pts) IUPAC name (include stereochemistry) (2pt)