Why does nature "prefer" symmetry? Why is symmetry energy-lowering? I keep hearing statements along the lines of this tossed around by chemists. Here are some examples:
IBrF2 - van der Waals repulsions - and number of unique bond angles (The more symmetric conformation of the molecule is probably preferred).
1) Are any of the above statements true? If so, can you provide example(s)?
2) I think the statement is false at least to some extent. Consider cyclobutadiene ... it's not a square; it's a rectangle.