Isolation of singlet carbene derived 2-arsa-1,3-butadiene radical cations and dications†
Abstract
2-Arsa-1,3-butadienes (L)As(cAACR) (L = PhCC{(NDipp)CH}2, Dipp = 2,6-iPr2C6H3; cAACR = C{(NDipp)CMe2CH2C(R)}, R = Me22a, R = cyclohexyl (Cy) 2b) and the corresponding radical cations [(L)As(cAACR)]GaCl4 (R = Me23a, Cy 3b) and dications [(L)As(cAACR)](GaCl4)2 (R = Me 4a, Cy 4b) featuring a CC–AsC π-conjugated framework are reported.