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a) Activation strain analysis for the 1,3‐dipolar cycloadditions between Az and CCC, CCN, and CCO attacking at the CC site and b) equilibrium geometries of the allene and respective consistent geometries with the average newly forming C/N⋅⋅⋅N bond of 2.20 Å with internal bending angles [°] computed at BP86/TZ2P.
