CHMB41H3 Lecture 4: CHMB41 - chapter 4

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13 Feb 2017
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Chapter 4 isomers: the arrangement of atoms in. Isomers - compounds w/ same molecular formula but different structures. 4. 1 cis-trans isomers result from restricted rotation. Restricted rotation by cyclic structure or double bond. Conformations are different spatial arrangements of the same compound - cannot be separated, some are more stable than others. Different con gurations are different compounds (cis/trans), can be separated, bonds have to be broken to interconvert compounds w/ diff con gurations. 4. 2 a chiral object has a non superimposable mirror image. A chiral object has a non superimposable mirror image, the mirror image is not the same as the image of the object of itself. Objects that are not chiral are chiral; has a superimposable mirror image. 4. 3 an asymmetric center is a cause of chirality in a molecule. The usual cause of chirality is an asymmetric centre. An asymmetric center is an atom bonded to four different groups.

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