The far-infrared and low-frequency Raman spectra of copper(II) nitrate hydrate in acetone-d0 and acetone-d6 reveal four new signals that have been assigned to vibrations involving the copper and oxygen atoms of a CuNO3+ complex. Normal coordinate analysis suggests that the structure of the complex is C2v bidentate, and this finding is supported by the observation of four polarized Raman lines in the 1700-225-cm-1 region. The calculation for the C2v bidentate structure reproduces the observed frequencies with an average error of 4 cm-1 and provides an accurate reproduction of the 15N isotopic shifts. The calculation also indicates that coupling between ring modes is occurring, and this is confirmed by the observation of 15N isotopic shifts for vibrational modes in portions of the ring well removed from the substituted nitrogen atom.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry