Crystal Structure of 2-(4′-N,N-Diethylaminophenylazo)pyrimidine

Abstract

The title compound, C₁₄H₁₇N₅, crystallizes in the centrosymmetric space group Pccn with one molecule in the asymmetric unit. The azo group, being coplanar with the attached benzene rings and the -N-C group of the substituent -N(CH₂CH₃)₂ on the phenyl ring, supports extensive delocalization of electron density. The substituent donate electron to the conjugated system via benzene ring into π^* orbital of the azo moiety which, decreases the bond order of the azo leading to a longer bond of 1.283(2) Å.