SI 2P CORE-LEVEL SHIFTS AT THE SI(100)-SIO2 INTERFACE - AN EXPERIMENTAL-STUDY

Si 2p core-level shifts are measured for a model system generated from HSi(OCH2CH2)(3)N 3nd Si(100)-2x1 and compared to the result obtained from a species containing similar coordination about silicon, HSi(OCH3 )(3). The dramatic difference in the products obtained is explained in terms of the chelate effect. The results are compared to previous res ults obtained using spherosiloxane clusters and an empirical, model-co mpound-based core-level shift assignment scheme is compared and contra sted with the conventional formal oxidation state assignment scheme.