| http://www.w3.org/ns/prov#value | - A 40% contributions of the structure with the double bond between the carbon atom and the nitrogen atom would confer upon this bond the property of planarity of the group of six atoms; the resistance to deformation from the planar configuration would be expected to be 40% as great for a molecule such as ethylene, containing a pure double bond, and it can be calculated that rotation of one end by 3
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