Molecular Shape and London Dispersion Forces (LDFs/Van der Waals Forces) скачать в хорошем качестве

Molecular Shape and London Dispersion Forces (LDFs/Van der Waals Forces)

This video addresses one of the main factors that impacts the strength of London dispersion forces (Van der Waals forces): the shape of the molecule. We begin by covering the differences between linear molecules and nonlinear molecules in terms of their surface areas of interaction, and home in on the examples of n-pentane and neopentane. We also examine the role of geometry in the boiling points of fatty acids, and how unsaturated hydrocarbon chains pack less efficiently. Finally, we explain why cycloalkanes have higher boiling points than straight chain isomers in terms of London forces. TIMESTAMPS 00:00 Intro 00:29 Importance of Interaction Area 01:49 Linear vs Non-Linear Molecules 03:33 Electron Cloud of n-Pentane 04:36 Electron Cloud of Neopentane 05:12 Corroborating Observations 05:44 Fatty Acids 08:17 Unexpected Elevation of Cycloalkane BP 09:48 Conformational Impacts on LDFs 12:08 End