Open Yale CoursesCHEM 125: Freshman Organic ChemistryLecture 26 - Van't Hoff's Tetrahedral Carbon and Chirality<< previous session| next session >>Overview:With his tetrahedral carbon models van't Hoff explained the mysteries of known optical isomers possessingstereogenic centers and predicted the existence of chiral allenes, a class of molecules that would not beobserved for another sixty-one years. Symmetry operations that involve inverting an odd number ofcoordinate axes interconvert mirror-images. Like printed words, only a small fraction of molecules areachiral. Verbal and pictorial notation for stereochemistry are discussed.Problem sets/Reading assignment:Reading assignments, problem sets, PowerPoint presentations, and other resources for this lecture can beaccessed from Professor McBride's on-campus course website, which was developed for his Fall 2008
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