FREE RADICALS DERIVED FROM 1,4-DIAZA-1,3-BUTADIENES. I. ESR OF ADDUCTS WITH SILYL, GERMYL AND STANNYL RADICALS AND OF THE DIPROTONATED RADICAL CATION

Article abstract of DOI:10.1016/S0022-328X(00)98525-5

Silyl, germyl and stannyl radicals add to N,N'-di-t-butyl-1,4-diaza-1,3-butadiene (t-Bu-DAB) to give cis and trans isomers of 1-azaallylic radicals.Similar isomers have also been observed in the ESR spectrum of the diprotonated t-Bu-DAB radical cation.