science-softCon uv/vis+ photochemistry database; www.photochemistry.org; (C) science-softCon 2019 Substance: isobutyric acid Other Names: 2-methylpropanoic acid Formula: C4H8O2; (CH3)2-CH-COOH CAS-No.: 79-31-2 Study: electronic spectroscopy Authors: P.E. Hintze, S. Aloisio, V. Vaida Title: Electronic spectroscopy of organic acid dimers Journal/Source: Chem. Phys. Lett., 343, 159-165, (2001); https://doi.org/10.1016/S0009-2614(01)00664-9 Data: table, diagram Energy/Wavelength range: 195 - 220 nm Resolution: Temperature: 295 K Temperature dependence: no Pressure/Concentration: Phase: gas pH: Comments: The temperature and pressure dependence of the absorption spectra near 205 nm is measured. The photo-absorption cross sectionsfor the monomer and dimer are calculated from 195-220 nm. The maximum cross sections of the monomer and dimer is given. Author to whom correspondence should be addressed: (e-mail address):