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Structures and Conformations

Molecular models are used to demonstrate the conformations of alkanes and cycloalkanes.
Molecular Models of Methane


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3.3 MB
52 seconds

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4 Slides





 
A molecular model of methane is shown and its shadow is used to draw its structure on paper.
Ethane


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9 MB
142 seconds

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10 Slides





 
Free rotation about carbon-carbon single bonds and the origin of the Newman projection are illustrated.
Butane


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6.3 MB
99 seconds

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11 Slides




   
Free rotation about carbon-carbon single bonds and the Newman projection of anti- and gauche- butane conformations are illustrated.
Cyclopropane


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A model of cyclopropane is shown.
Cyclobutane


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A model of cyclobutane is shown.
Cyclopentane


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A model of cyclopentane is shown.
Cyclohexane: Chair and Boat Conformations


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1.6 MB
25 seconds

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9 Slides





 
Chair and boat conformations of cyclohexane are demonstrated.
Cyclohexane: Tracing the Chair Conformation


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3.3 MB
52 seconds

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5 Slides




   
The shadow of the molecular model is traced to show how the cyclohexane chair structure can be drawn on paper.
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