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Alkanes

Alkanes. Acyclic: C n H 2n+2 Cyclic (one ring): C n H 2n Bicyclic (two rings) : C n H 2n-2. Only single bonds, sp 3 hybridization, close to tetrahedral bond angles. Physical properties. Boiling points Lower than other organic molecules of same size.

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What are the forces in a molecular structure?

Torsional strain: Strain between groups on adjacent atoms. A-B-C-D. Worst when eclipsed; best when staggered. Bond angle strain: when a bond angle, A-B-C, diverges from the ideal (180, 120, 109). What are the forces in a molecular structure?. Conformations of cycloalkanes: cyclopropane.

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Chapter 3 CONFORMATIONS OF ALKANES AND CYCLOALKANES

Chapter 3 CONFORMATIONS OF ALKANES AND CYCLOALKANES. Chapter 3: Conformations of Alkanes and Cycloalkanes. HEATS OF COMBUSTION AND RING STRAIN. Chapter 3: Conformations of Alkanes and Cycloalkanes. STRAIN ENERGY VS. RING SIZE. Chapter 3: Conformations of Alkanes and Cycloalkanes.

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Gauche interaction - PowerPoint PPT Presentation

Alkanes

What are the forces in a molecular structure?

Chapter 3 CONFORMATIONS OF ALKANES AND CYCLOALKANES