As–as bond forming and As–C bond cleavage in the formation of [Li(thf){As(But)As(But)2}]2(thf = tetrahydrofuran). X-Ray structure of an unusual lithium organoarsenide
Abstract
[Li(thf){As(But)As(But)2}]2(thf = tetrahydrofuran), produced from the interaction of LiAs(But)2 with MgBr2(2 : 1) in thf, is a dimer with two Li atoms bridging two–As(But)As(But)2 groups and with a planar Li2As2 core [Li–As 2.58(2), As–As 2.403(2), Li ⋯ Li 3.290(3)Å].