science-softCon uv/vis+ photochemistry database; www.photochemistry.org; (C) science-softCon 2019 Substance: acetylacetone Other Names: 2,4-pentanedione; pentan-2,4-dion Formula: C5H8O2; CH3COCH2COCH3 CAS-No.: 123-54-6 PubChem: CID 31261 Study: uv absorption spectra Authors: H. Nakanishi, H. Morita, S. Nagakura Title: Charge-Transfer Character in the Intramolecular Hydrogen Bond: Vacuum Ultraviolet Spectra of Acetylacetone and Its Fluoro Derivatives Journal/Source: Bull. Chem. Soc. Japan, 51 (6), 1723-1729, (1978) Data: diagram, table Energy/Wavelength range: 125 - 325 nm Resolution: Temperature: 298 K Temperature dependence: no Pressure/Concentration: Phase: vapor pH: Comments: Near and vacuum UV absorption spectra of trifluoroacetylacetone (TFAC) and hexafluoroacetylacetone (HFAC) were measured at room temperature in the vapor phase and in perfluorohexane in the 30000-80000 cm-1 region, together with a vacuum UV absorption spectrum of acetylacetone in the 60000-80000 cm-1 region. For acetylacetone strong bands appear at 65200 cm-1 and ~ 79000 cm-1 and shoulders at ~ 60000 cm-1 and ~ 71000 cm-1. Author to whom correspondence should be addressed: (e-mail address):