Data File 1: Infrared spectroscopy of secondary organic aerosol precursors and investigation of the hygroscopicity of SOA formed from the OH reaction with guaiacol and syringol

Computed harmonic and anharmonic frequencies (cm-1 units) and intensities (km/mol units) of 4-NS (Table S1) and 3-NS (Table S2) at the B3LYP/6-311++G(2d,p) level of theory. Modes description were obtained with the Gaussview software. Originally published in Applied Optics on 10 April 2017 (ao-56-11-E116)