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Chemistry

A new twist on molecular shape

What are the forces that control the twisting and folding of molecules into complex shapes? Don't look for the answers in your organic chemistry textbook.

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Figure 1: Energy profile for internal rotations in ethane.
Figure 2: Contour plots (two-dimensional, 2D) and surface plots (3D) of adjacent carbon–hydrogen bond orbitals (σCH and CH*) of ethane.

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Correspondence to Frank Weinhold.

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Weinhold, F. A new twist on molecular shape. Nature 411, 539–541 (2001). https://doi.org/10.1038/35079225

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