dc.creator Andrews, Lester en_US dc.creator Smardzewski, Richard R. en_US dc.creator Hatzenbuhler, D. A. en_US dc.date.accessioned 2006-06-15T13:31:40Z dc.date.available 2006-06-15T13:31:40Z dc.date.issued 1972 en_US dc.identifier 1972-I-3 en_US dc.identifier.uri http://hdl.handle.net/1811/9020 dc.description Author Institution: Chemistry Department, University of Virginia en_US dc.description.abstract The Raman spectrum of the ${Li^{+}O_{2}}^{-}$ molecule has been observed from samples of oxygen codeposited with lithium atoms at $15^{\circ} K$ . An intense band at $1093 cm^{-1}$ exhibited appropriate oxygen isotopic shifts for assignment to the symmetric oxygen-oxygen vibrational mode. Intense bands at 1094, 1108, 1110, and $1114 cm^{-1}$ have been observed following matrix reactions of Na, K, Rb, and Cs atoms, respectively, with $Ar/O_{2} = 100$ samples. Experiments using $^{16}O_{2}$, $^{16}O^{18}O$, $^{18}O_{2}$ isotopic mixtures produced triplets indicating equivalent oxygen atoms in these $M^{+}O_{2}^{-}$ molecules. In all cases no bands were observed corresponding to the interionic $M^{+}--O_{2}^{-}$ vibrations, which were very strong in the infrared. The observed Raman intensities support the ionic model $M^{+}O_{2}^{-}$ with $O_{2}^{-}$frequencies increasing with increasing polarizability of $M^{+}$ as the antibonding electron density of $O_{2}^{-}$ is correspondingly decreased. en_US dc.format.extent 121633 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title MATRIX RAMAN SPECTRA OF THE ALKALI SUPEROXIDE MOLECULES $M^{+}O_{2}^{-}$ AND THE IONIC MODEL en_US dc.type article en_US
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