Question

>>>>Define cyclo rigidity<<<<

Question for Manvi.
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Answer 1

Answer:

The opposite of rigidity is flexibility. ... Infinitesimal rigidity means that the structure will not flex by even an amount that is too small to be detected even in theory. (Technically, that means certain differential equations have no nonzero solutions.)

Answer 2

The rigidity of cumulenes arises from the fact that the internal carbon atoms carry two double bonds. Their sp hybridisation results in two π bonds, one to each neighbor, which are perpendicular to each other. If the number of consecutive double bonds is even, there is axial chirality as for allenes.

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