2,2'-azo-bisisobutyronitrile H.Weichmann, G. Quell and A. Tzschach, Z. Anorg. Allg. Chem., 462(1980)7; H. Weichmann, C. Muegge, A. Grand und J. B. Robert, J. Organomet. Chem., 238(1982) 343; H. P. Abicht, C. Muegge und H. Weichmann, Z. Anorg. Allg. Chem, 467(1980) 203; elem. anal.;

in neat (no solvent) byproducts: Me4Sn; heating of the react. mixt. at ca 60°C, then 1-2 d at room temp.; distn.; elem. anal.;