The Spectrum of CuO: Rotational Analysis of Some Blue and Red Bands

Abstract

The emission spectrum of CuO has been photographed at high resolution in the region from 4 000 Å to 6 500 Å. In the red region also the pure isotopic molecule 63CuO has been studied. Different light sources have been used. A blue band system, a 2Π i -X 2Π i transition, as well as a red band system, a 2Σ+-X 2Π i transition, has been rotationally analyzed. Tables of the molecular constants of all the known states of CuO are given.

A laser spectroscopic investigation of rhodium monosilicide

“…4 (see RhP, RhS and RhCl) the 3r orbital is expected to lie slightly above the 2p orbital and it seems probable that the [22.6] 2 R + state arises from the 3r 2r excitation. The permanent dipole moment has been measured in several rhodium diatomics, including RhS [l = 3.40 D], by Steimle and coworkers [24]. As they point out, occupation of the 2p orbital moves electron density towards the ligand which is expected to give, for the reduced dipole moments, l/r (RhS) >> l/r (RhSi).…”

“…The residuals and the lack of success in fitting the data clearly show that the 2 P state is perturbed in both the X = 1/2 and 3/2 components. Another attempt was made to fit the data using the Hamiltonian of Appelblad and Lagerqvist [24] where the 2 P 1/2 and 2 P 3/2 substates are treated separately. Again only limited success was achieved fitting R 1 , Q 1 , and P 1 transitions to J = 20.…”

Fluorescence Studies of CuO in an Ar Matrix

“…b) Gas phase assignment of Ref. [3]. The 0-1 vibrational spacing is shown to the right of each level.…”

“…la). However, a later detailed analysis by Appelblad and Lagerqvist [3] presented compelling evidence that the common level was the final 'lI state (Fig. 1 b).…”

Theoretical spectroscopy of copper monoxide

“…After the ground state was correctly assigned as a 21-I state [8], a large number of further experimental studies were published [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. They yielded insight into parts of a very complicated spectrum, due to a large number of close-lying electronic states.…”