Abstract
Far-ir and Raman vibrational spectra and x-ray photoelectron spectra (XPS) have been obtained on the heteronuclear complex MoWCl{sub 4}(PMe{sub 3}){sub 4}. A band at 326 cm{sup {minus}1} in the far-ir spectrum and at 322 cm{sup {minus}1} in the Raman spectrum has been attributed to the Mo-W stretching mode. The force constant for the heteronuclear M-M stretching mode is significantly larger compared to those of its homonuclear analogues. The XPS results for the heteronuclear complex indicate a partial shift in electron density from tungsten to molybdenum. 4 tabs., 1 fig., 15 refs.
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