One such azide reactions is the 3+2 cycloaddition reaction with alkyne, but the reaction requires high temperature and often gives mixtures of regioisomers.
As an example of isomer counting, there are nine structural isomers with molecular formula structural analog | 2009 structural changes to local government in England | Structural motif | Structural load | Structural engineering | structural steel | Structural isomer | structural engineering | Structural analog | Structural steel | structural stability | Structural Classification of Proteins database | Ship and Offshore Structural Mechanics Laboratory | International Committee on Aeronautical Fatigue and Structural Integrity | Finite element method in structural mechanics | Similar