StereoAns - Draw a proper 3-D picture of...

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H 3 C CH 3 H 3 C CH 3 H H H H NOTICE HOW THE CH 3 GROUPS ARE ON THE SAME SIDE OF THE PI BOND OR ON OPPOSITE SIDES OF THE PI BOND! Z Stereolabel E stereolabel Cl H Cl Cl H H Cl H NOTICE HOW THE Cl atoms ARE ON OPPOSITE SIDEs OF THE PI BOND OR ON THE SAME SIDE OF THE PI BOND! H Cl Cl H NOTICE HOW THE TWO MOLECULES ARE DIFFERENT! THEY CANNOT BE SUPERIMPOSED. HOW DO YOU TELL THEM APART? CIS stereolabel TRANS stereolabel S stereolabel R stereolabel Draw a proper 3-D orbital picture of 2-butene - you can only draw the double bond in 3-D if you like, showing the p orbitals of the double bond. Take care to notice the arrangement of the end methyl groups with respect to that pi bond. Is there more than one way to arrange those methyl groups?
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Unformatted text preview: Draw a proper 3-D picture of 1,3-dichlorocyclobutane , clearly show the ring as flat, but everything attached to the tetrahedral ring atoms as dashed and wedged. Look at how the Cl atoms are distributed with respect to the ring. Is there more than one molecule you can make with the same connectivity? Draw a proper 3-D picture of 2-chlorobutane , make sure the second carbon (the one with the Cl atom attached is drawn with two sticks, a dash and a wedged group. Notice if there is more than one drawing you can make with the same connectivity...
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