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

Substance: chlorine nitrate				Other Names: 

Formula: ClONO2						CAS-No.: 14545-72-3

Study: quantum yields, photolysis


Authors: R.J. Yokelson, J.B. Burkholder, R.W. Fox, A.R. Ravishankara

Title: Photodissociation of ClONO2: 2. Time-Resolved Absorption Studies of Product Quantum Yields 

Journal/Source: J. Phys. Chem. A., 101(36); 6667-6678, (1997);  DOI: 10.1021/jp9708198 


Data: 

Energy/Wavelength range: 193 nm, 248.25 nm, 308.15 nm, 352.5 nm

Resolution: 

Temperature: 

Temperature dependence: 

Pressure/Concentration: 

Phase: gas

pH:


Comments: The quantum yield for NO3 production in the UV photolysis of ClONO2 was measured via transient 661.9 nm absorption 
of NO3 following pulsed laser photolysis and was found to be 0.93 +/-0.24 at 352.5 nm, 0.67 +/- 0.09 at 308.15 nm, 0.60 +/- 0.09 at 248.25 nm, 
and 0.18 +/- 0.04 at 193 nm. The Cl atom quantum yield was measured by reacting Cl with ClONO2 to produce NO3 through the 
reaction Cl + ClONO2 --> Cl-2 + NO3 and was found to be 0.73 +/- 0.14 at 308.15 nm, 0.60 +/- 0.12 at 248.25 nm, and 0.45 +/- 0.08 at 193 nm. 
The estimated O atom yields were <0.4 at 248.25 nm and <0.9 at 193 nm.

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