화학공학소재연구정보센터
Journal of Chemical Physics, Vol.104, No.21, 8183-8196, 1996
The Optical and Optical/Stark Spectrum of Iridium Monocarbide and Mononitride
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<30 MHz FWHM) laser induced fluorescence spectroscopy. This is the first identification of gaseous IrN. Numerous strong band systems in the 18 800 to 14 360 cm(-1) spectral range were assigned as the (upsilon’,0) progression of the A (1) Pi-X (1) Sigma(+) 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 R(0) line of these bands were analyzed to produce permanent electric dipole moments : A (1) Pi(upsilon = 0) 2.78(2) D, A (1) Pi(upsilon=1) 2.64(2) D, X (1) Sigma(+)(upsilon=0)=1.66(1) D. The (0,0) band of the D-2 Phi(7/2)-X (2) Delta(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 R(2.5) branch feature were analyzed to produce permanent electric dipole moments : D (2) Phi(7/2)(upsilon=0) 2.61(6) D and X (2) Delta(5/2)(upsilon=0) 1.60(7) D. Plausible electronic configurations consistent with the experimental observations are given.