Analysis of polyatomic molecules using high resolution coherent two-dimensional spectroscopy: Application to nitrogen dioxide.
The peak-sorting capabilities of high resolution coherent two-dimensional (2D) spectroscopy provide a new way of dealing with severe rotational congestion. This paper describes the application of this technique to the polyatomic molecule, NO(2). NO(2) is a primary component of photochemical smog and has a notoriously complex and congested spectrum that extends from the infrared to the ultraviolet regions. This spectrum is infamous for having an unusually high density of peaks and very few regular patterns. However, the coherent 2D spectrum of NO(2) shows a network consisting of numerous X-shaped patterns that mark the locations of vibronic origins. This paper describes how peak sorting leads to the formation of such patterns and how peak coupling can be used to conduct a rotational analysis of congested areas in the visible spectrum of NO(2).
Chen
Peter C
PC
Chemistry Department, Spelman College, 350 Spelman Lane, Atlanta, Georgia 30314, USA. pchen@spelman.edu
Mitchell
Kamilah
K
D000393:Air Pollutants / Q000737:chemistry*; D005240:Feasibility Studies; D009585:Nitrogen Dioxide / Q000737:chemistry*; D013057:Spectrum Analysis
D000393:Air Pollutants; D009585:Nitrogen Dioxide