Conclusions
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1.
The IR and Raman spectra of tris-π-allylrhodium and bis-π-allylrhodium halides were studied. An assignment of the vibration frequencies was performed.
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2.
On the basis of an analysis of the effective selection rules, it was shown that all three π-allyl groups in (π-C3H5)3Rh, from the standpoint of vibrational spectroscopy, are equivalent, since the vibrations of the skeleton of the molecule obey C3h symmetry.
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3.
The redistribution of electron density in the “asymmetrical” π-allyl groups in bis-π-allylrhodium halides is inconsequential, since it is not manifested in the vibrational spectra.
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Preliminary data were reported at the Fifth International Congress on Organometallic Chemistry and published in [1].
Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 2011–2017, September, 1974.
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Chenskaya, T.B., Leites, L.A., Aleksanyan, V.T. et al. Vibrational spectra of π-allyl complexes of rhodium. Russ Chem Bull 23, 1931–1936 (1974). https://doi.org/10.1007/BF00922790
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DOI: https://doi.org/10.1007/BF00922790