Free Radical Reactions of N₂O Molecules

V. A. Radtsig

Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, 117977 Russia

Received November 22, 2000

Abstract—Experimental data are presented on the spectral (ESR, IR, and optical) and thermochemical char-
acteristics of a complex between the (SiO)₃ radical and an N₂O molecule. The rate constants of separate
reactions in the systems (SiO)₃ + N₂O and (GeO)₃ +N₂O are found. The results of quantum
chemical calculations of potential energy surfaces and spectral characteristics are presented for the following
systems: + N₂O, H₃ + N₂O, H₃ + N₂O, F₂H + N₂O, F₃ + N₂O, and F₃ + N₂O. The latter
three systems served as molecular models for experimentally found systems. Based on experimental and theo-
retical data, the product of N₂O addition to (SiO)₃ has the structure SiN=N. The reactions of free
radicals , H₃, H₃, F₂H, F₃, (SiO)₃, and (GeO)₃ with N₂O are compared. The spec-
trum of optical absorbance of the (SiO)₃Si radical is recorded and qualitatively characterized.

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