Abstract
Lewis acid-base adducts between potassium dihydrogenpnictogenides [K(18c6)PnH(2)] (Pn=P, As) and Trialkylgallanes (GaMe(3), GaEt(3), GatBu(3)) as well as BH(3) were synthesized. In the course of these investigations, we were able to fully characterize a row of compounds of the type [K(18c6)(thf)(0-2)][PnH(2)(ER(3))(2)] (E=B: R=H; E=Ga: R=Me, Et, tBu). Based on the successful syntheses of these species, we also synthesized several compounds of the composition [K(18c6)(thf)(0-2)][Pn(SiMe(3))(2)(ER(3))(n)] (n=1, 2) starting from [KPn(SiMe(3))(2)] (Pn=P and As) and ER(3) (E=B, Al, In: R=Me; E=Ga: R=Me, Et, tBu). All isolated compounds, were examined by NMR spectroscopy, infra-red spectroscopy and elemental analysis. A selection of the compounds presented were also examined by means of X-ray structure analysis on the single crystal. The obtained adducts of negatively charged [PnH(2)](-) and [Pn(SiMe(3))(2)](-) fragments with Lewis acids are a class of compounds that has scarcely been investigated to date.