Analysis of the Coriolis Resonance System (00002)/(00010) in Four Isotopomers of Fulminic Acid

• Published in: Journal of molecular spectroscopy Vol. 176; no. 2; pp. 416 - 424
• Main Authors: Islami, Kastriot, Preusser, Jürgen, Schermaul, Roland, Winnewisser, Brenda P., Winnewisser, Manfred
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 01.04.1996
• ISSN: 0022-2852; 1096-083X
• DOI: 10.1006/jmsp.1996.0103

This study follows an analogous treatment of data for H13C14NO (K. Islami, B. P. Winnewisser, J. Preusser, and M. Winnewisser,J. Mol. Spectrosc.176,xxx–xxx (1996)). The model used for the analysis of the Coriolis resonance (00002)/(00010) was extended by G. Wagner, B. P. Winnewisser, M. Winnewisser, and K. Sarka,J. Mol. Spectrosc.162,82–119 (1993). In addition to the interaction between the vibrational levels (v1v2v3v4v5)k= (00002)0eand (00010)1e, an interaction between the levels (00002)2e,fand (00010)1e,fwas included. However, the correlation between the Coriolis parameters describing the two interactions and their correlation with thel-type doubling parameters do not allow a simultaneous fit of both parameters. If the values of both Coriolis parameters are stepped manually, the standard deviation forms a surface. The minimum of the surface of the standard deviation has the form of a shallow valley which leads to ambiguous Coriolis parameters. The aim of this article is to illuminate and compare the ambiguity of the two Coriolis parameters for the four isotopomers H12C14NO, H13C14NO, H12C15NO, and H13C15NO using contour graphs which represent a projection onto a two-dimensional coordinate system of the surface of the standard deviation as a function of the two Coriolis parameters.