R3−nN(CH2Si(CH3)3)n as determined photoelectron spectroscopy range from 9.07 eV to 7.66 eV. The most easily ionized molecule, N(CH2Si(CH3)3)3, can also be oxidized with AlCl3 in H2CCl2 solution to its aminiumradical cation. The ESR spectra recorded between 180 K and 310 K display a strong temperature dependence due to rotations around the >NCH2bonds.