Structural characteristics of chlorine-substituted diazadienes in the solid state from35NQR data

The quadrupole resonance spectra and the quadrupole spin-lattice relaxation times of the³⁵Cl nuclei are correlated with the molecular structures of the two chlorine-containing diazadienes CCl₃CCl=NCCl=NC₆H₅ and CCl₃CCl=NCCl=NCCl₂CCl₃. The monotropic polymorphism found in the case of the second crystal is discussed.Perm State University. Translated from Zhurnal Strukturnoi Khimii, Vol. 34, No. 2, pp. 84–87, March–April, 1993.