Photodissociation spectroscopy of the anionic copper nitrate association complex Cu(NO3)3(-)
Sydney H Kaufman1, J Mathias Weber
1JILA and Department of Chemistry and Biochemistry, University of Colorado , Boulder, Colorado 80309, United States.
Abstract:
We report the UV photodissociation spectrum of mass-selected Cu(NO3)(3)(-) ions at photon energies between 3.0 and 5.6 eV. Upon photon absorption, Cu(NO3)(3)(-) undergoes reductive dissociation losing neutral NO3 and resulting in the formation of Cu(NO3)(2)(-). The experimental results are discussed and interpreted with the aid of quantum-chemical calculations. The parent ion is calculated to have C2 symmetry with a strongly distorted octahedral coordination around the Cu ion. Time-dependent density functional theory is used to describe the accessible electronic transitions, which can be characterized as ligand-to-metal charge transfer transitions from the nitrate ligands to the copper ion.
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