Notes exam 2

Notes exam 2 - Chapter 5 Stereoisomers Constitutional...

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Chapter 5 Stereoisomers Constitutional Isomers- differ only in the order the atoms are connected Stereo Isomers- Connected in the same order, but differ in spatial arrangement. Enatiomers- Mirror Images Diastereomers-Not related as mirror Image Nonsuperimposable Molecules are Chiral Usual contain Stereocenters , carbons with 4 diferent substituents Chiral molecules cannot have a plane of symmetry Superimposable images are achiral Dextroratory- (+)enantiomer Levorotatory-(-)enantiomer Plane Polarized light is used to measure optical rotation Specific rotation: [alpha](temp,wavelength light)=(alpha)/length(of sample)*c(Concentration) A Racemic Mixture contains 50:50 of each enantiomer Racemization occurs if pure enantiomer equilibrate with its mirror image Optical Purity %= [alpha observed]/[alpha] * 100 Eg Purity = 50% then 50% is pure and 50% is racemic R= clockwise S= counter clockwise Put group of lowest priority away from you, then order the remaining 3 and draw a circle from highest to middle to lowest
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Notes exam 2 - Chapter 5 Stereoisomers Constitutional...

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