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

Substance: phosphorus pentabromide			Other Names: pentabromophosphine

Formula: PBr5						CAS-No.: 7789-69-7

Study: photolysis, uv absorption spectrum

                
Authors: T. Kennedy, R.S. Sinclair, T.J. Sinclair

Title: The U.V. spectrum and photolysis of phosphorus halides in hydrocarbon solvents - II: Phosphorus tribromide and phosphorus pentabromide in cyclohexane

Journal/Source: J. Inorg. Nucl. Chem., 33, 2369-2376, (1971); doi:10.1016/0022-1902(71)80211-7


Data: diagram, table

Energy/Wavelength range: 190 - 300 nm

Resolution: 

Temperature: 298 K

Temperature dependence: no

Pressure/Concentration: 

Phase: solution (cyclohexane)

pH:


Comments: The u.v. spectrum of PBr3 in cyclohexane shows a strong absorption at 222 nm with shoulders at approximately 250 nm 
and 275 nm. The molar extinction coefficient was measured at the peak maximum and at the irradiating wavelength of 254 nm.

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