Geometric Isomerism

Geometric Isomerism - double bond. trans but-2-ene...

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Chemical Ideas 3.5 Geometric Isomerism (different geometries)
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Types of isomerism Isomerism Structural  isomerism Stereoisomerism Geometric  isomerism Optical  isomerism
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Build these models Cis but-2-ene trans but-2-ene
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Two isomers are not interchangeable. Carbon 2 & 3 joined by double bond. No free rotation. Bonds would have to be broken and reformed. +270 kJ mol -1 energy needed to break this bond. Insufficient energy available at room temperature.
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cis. .. Different names needed to identify isomers. Substituent groups on the same side of double bond. Cis but-2-ene Cis but-2-ene
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...and trans . trans ” means other side or cross over e.g. trans Atlantic, transplant, trans…. .! Substituents on opposite sides of
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Unformatted text preview: double bond. trans but-2-ene Different compounds- different properties. Time to think and apply what we have learned! How are the structures of nerol and geraniol related? How many moles of H 2 would be needed to saturate one mole of geraniol? How are nerol and geraniol related to citronellol? How are the structures of nerol and geraniol related to linalool? This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching....
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This note was uploaded on 11/09/2011 for the course CHEM 201 taught by Professor Peterson during the Fall '11 term at BYU.

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Geometric Isomerism - double bond. trans but-2-ene...

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