Degrees of unsaturation

Degrees of unsaturation
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What is a degree of unsaturation? It is a pi bond or ring. This concept comes from Chapter 3. A compound is saturated when it has the maximum number of bonds to hydrogen. Formula for degrees of unsaturation: U = C + 1 ½(X N) C = ; X = ; N = Here are some reference compounds you can use to make sure you can use the formula. C 5 H 12 : Zero degrees of unsaturation C 6 H 12 : One degree of unsaturation OH C 4 H 8 O:One degree of unsaturation C 4 H 8 BrCl: Zero degrees of unsaturation
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Unformatted text preview: Br Cl N C 4 H 7 N: Two degrees of unsaturation C 6 H 6 : Four degrees of unsaturation How to propose a structure from an empirical formula: 1. Calculate the degrees of unsaturation. 2. Arrange all of the multivalent atoms with the correct number of degrees of unsaturation. (Everything but hydrogens and halogens.) 3. Add in the monovalent atoms to fill up the proper bond number for each atom....
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