Fig 2.

Electron impact mass and Fourier transform-IR spectra. (a) High-resolution electron impact mass spectrum of the AHR ligand. x axis, the ratio of mass to charge, m/z; y axis, relative abundance of ions. The ligand structure showing the formation of the major fragments is presented. Proposed fragmentation pathways are as mapped under the spectrum. (b) Fourier transform-IR spectrum of the AHR ligand. x axis, the frequencies of IR beam expressed as wavenumber (cm⁻¹). The region from 1,000 to 3,000 cm⁻¹ is shown here. y axis, the absorbance. Signals with clear attribution are as labeled.