Oxidative Addition of Hydridic, Protic, and Nonpolar E-H Bonds (E = Si, P, N, or O) to an Aluminyl Anion.

The aluminyl anion K[Al(NONDipp)] {NONDipp = [O(SiMe2NDipp)2]2-; Dipp = 2,6-iPr2C6H3} engages in oxidative additions with the E-H (E = Si, P, N, or O) bonds of phenylsilane (PhSiH3), mesityl phosphane (MesPH2; Mes = 2,4,6-Me3C6H2), 2,6-di-iso-propylaniline (DippNH2), and 2,6-di-tert-butyl-4-methylphenol (ArOH). The resulting (hydrido)aluminate salts are formed regardless of the E-H bond polarity. All of the products were characterized by nuclear magnetic resonance and infrared spectroscopic techniques and single-crystal X-ray diffraction. This study highlights the versatility of aluminyl anions to activate hydridic, acidic, and (essentially) nonpolar E-H bonds.