The optical and optical/Stark spectrum of iridium monocarbide and mononitride
- Dept. of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604 (United States)
Supersonic molecular beam samples of iridium monocarbide IrC and iridium mononitride IrN were generated using a laser ablation/reaction source and characterized using high resolution ({Delta}{nu}{lt}30 MHz FWHM) laser induced fluorescence spectroscopy. This is the first identification of gaseous IrN. Numerous strong band systems in the 18800 to 14360 cm{sup {minus}1} spectral range were assigned as the ({ital v}{prime},0) progression of the {ital A}{sup 1}{Pi}{endash}{ital X}{sup 1}{Sigma}{sup +} band system of IrN. The (1,0) and (0,0) bands were analyzed to produce a set of fine and hyperfine parameters. The electric field induced effects on the {ital R}(0) line of these bands were analyzed to produce permanent electric dipole moments: {ital A}{sup 1}{Pi}({ital v}=0) 2.78(2) D, {ital A}{sup 1}{Pi}({ital v}=1) 2.64(2) D, {ital X}{sup 1}{Sigma}{sup +}({ital v}=0)=1.66(1) D. The (0,0) band of the {ital D}{sup 2}{Phi}{sub 7/2}{minus}{ital X}{sup 2}{Delta}{sub 5/2} system of IrC was recorded and analyzed to produce a set of fine and hyperfine parameters. The electric field induced effects on the {ital R}(2.5) branch feature were analyzed to produce permanent electric dipole moments: {ital D}{sup 2}{Phi}{sub 7/2}({ital v}=0) 2.61(6) D and {ital X}{sup 2}{Delta}{sub 5/2}({ital v}=0) 1.60(7) D. Plausible electronic configurations consistent with the experimental observations are given. {copyright} {ital 1996 American Institute of Physics.}
- DOE Contract Number:
- FG03-94ER14468
- OSTI ID:
- 286144
- Journal Information:
- Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 21 Vol. 104; ISSN JCPSA6; ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
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