CHM136H1 Chapter Notes - Chapter 7: Yorkshire Carnegie, Activation Energy, Endergonic Reaction

• School: UTSG
• Department: Chemistry
• Course: CHM136H1
• Professor: Thavarajah/ Woolley/ Nitz

Document Summary

Ethylene can be produced by thermal cracking at very high temperatures. 7. 2 calculating the degrees of unsaturation of a molecule. A degree of unsaturation refers to a double bond or a ring in a system: each ring or double bond corresponds to a loss of 2 h"s. Alkenes are unsaturated compounds (contain at least one double bond) Degrees of unsaturation can be calculated from the molecular formula. Number the carbons in chain so that double bond carbons have lowest possible numbers. Write the full name, number substituents according to: position in chain, alphabetically. Cannot rotate a double bond without breaking it. This prevents rotation about a carbon-carbon double bond (unlike a carbon-carbon single bond) These two compounds are identical; they are not cis-trans isomers. These two compounds are not identical; they are cis-trans isomers. Cis-trans naming system works with disubstituted alkenes (compounds that have two substituents other than hydrogen on the double bond) Priority rules of cahn, ingold, and prelog.