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

Substance: diphosphorus tetraiodide			Other Names: tetraiododiphosphane

Formula: P2I4						CAS-No.: 13455-00-0

Study: photolysis, extinction coefficients, quantum yields

                
Authors: T. Kennedy, R.S. Sinclair

Title: The U.V. spectrum and photolysis of P2I4 and PI3

Journal/Source: J. Inorg. Nucl. Chem., 32, 1125-1133, (1970); http://dx.doi.org/10.1016/0022-1902(70)80106-3


Data: table

Energy/Wavelength range: 223 nm; 287 nm; 374 nm

Resolution: 

Temperature: 

Temperature dependence: 

Pressure/Concentration: 

Phase: solution (cyclohexane)

pH: 


Comments: The u.v. spectrum and photolysis of PI3 and P2I4 in hexane and cyclohexane have been investigated and the stoichiometry of 
the photolysis reaction obtained. A reaction mechanism for the breakdown is proposed and the quantum yield and kinetic behaviour of the 
solutions explained. The maxima of the UV spectrum are listed.

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