Supplement Number 1

Equilibrium geometry of low energy HDZ-Z and HDZ-E, Rotational Potential energy surfaces of hydrazine, UV-VIS spectra of Z/E isomers of mono-cyano- and double-cyano- substituted hydrazone in DMSO and toluene, HUMO - LUMO surfaces and contours of substituted HDZ-Z/E computed at CAM-B3LYP/6-31++G(2d,2p)