Chemiluminescence study of the Ca(1D) + BrCN reaction: Estimate of the CaCN dissociation energy
作者:Nick Furio、Paul J. Dagdigian
DOI:10.1016/0009-2614(85)85148-4
日期:1985.4
Chemiluminescence resulting from the reaction of Ca(1D) + BrCN under single-collision conditions has been observed. The spectra show the major chemiluminescence channel to be the formation of the excited calcium monocyanide. From the short-wavelength cutoff of the chemiluminescence spectrum, a lower bound of 3.91 ± 0.05 eV is placed on D00(CaCN). An absolute chemiluminescence cross section of 19.0
Observation and spectroscopy of metallic free radicals produced by reactive collisions during a supersonic expansion
作者:C. J. Whitham、B. Soep、J‐P. Visticot、A. Keller
DOI:10.1063/1.459126
日期:1990.7.15
Using the techniques of laser vaporization, supersonic jet, and laser-induced fluorescence spectroscopy, we have studied a number of small calcium containing free radicals, formed by the reaction of calcium atoms with the appropriate precursor molecule. We present spectra for CaCCH (from HCCH), CaNH2 (from NH3 ), and CaCN (from CH3CN ) in the region of the first electronically excited states. The cooling achieved in the jet has revealed structure hidden in previous high temperature studies. In the case of CaCN, we report the first rotationally resolved spectra of this molecule.
The pure rotational spectrum of CaNC
作者:C. T. Scurlock、T. C. Steimle、R. D. Suenram、F. J. Lovas
DOI:10.1063/1.466391
日期:1994.3
The pure rotational spectrum of calcium isocyanide, CaNC, in its (0,0,0) X 2Σ+ vibronic state was measured using a combination of Fourier transform microwave (FTMW) and pump/probe microwave-optical double resonance (PPMODR) spectroscopy. Gaseous CaNC was generated using a laser ablation/supersonic expansion source. The determined spectroscopic parameters are (in MHz), B=4048.754 332 (29); γ=18.055 06 (23); bF=12.481 49 (93); c=2.0735 (14); and eQq0=−2.6974 (11). The hyperfine parameters are qualitatively interpreted in terms of a plausible molecular orbital descriptions and a comparison with the alkaline earth monohalides and the alkali monocyanides is given.