The X-ray structure determination of the title compound, N,N' -bis (2-pyrid
inecarbonyl)hydrazine, C12H10N4O2, indicated that it is non-planar and twis
ted in the form of butterfly wings. The two carbonyl bonds are located in a
n s-syn conformation relative to the N-N bond, through which there is a cry
stallographic twofold axis. The molecules are packed in chains running alon
g the c axis.