A General Synthetic Pathway to Lewis Base-Stabilized, MonomericGroup 13/15 Compounds

Abstract

Reactions of an equimolar amount of 4-(dimethylamino)pyridine (dmap) with several Al−E heterocycles [R2AlE(SiMe3)2]x (E = P, As; R = Me, x = 3; R = Et, x = 2) and Ga−Sb heterocycles [R2GaSb(SiMe3)2]x (R = Me, x = 3; R = Et, x = 2) in hexane offers a general pathway for the formation of monomeric, Lewis base-stabilized compounds of the type dmap−(R2)ME(SiMe3)2 (M = Al, R = Me, E = P 1, As 2; R = Et, E = As 3; M = Ga, E = Sb, R = Me 4, Et 5). Compounds 1, 2, 3 and 5 have been characterized by single-crystal X-ray diffraction.