science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2019

Substance: hexafluoroacetylacetone			Other Names: 2,4-pentanedione, 1,1,1,5,5,5-hexafluoro-; HFAC

Formula: C5H2F6O2					CAS-No.: 1522-22-1

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; solution (perfluorohexane)

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.
The HFAC vapor spectrum has absorption peaks at 37450 cm-1, 63700 cm-1, 70400 cm-1 and + 77000 cm-1.

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