Determination of the Geometric Structure of Core Excited Silane Based on Photoabsorption Spectra Near the Si 2p Edge

The photoabsorption spectra near the Si 2p edges of SiH₄ have been studied based on the multiple-scattering self-consistent-field method. Our theoretical calculations provide clear assignments of the inner-shell photoabsorption spectra. In comparison with high-resolution experimental spectra, the geometric structure of the Si 2p excited SiH^**₄ is recommended as C_2v symmetry.