Sonolysis iron pentacarbonyl

An example of sonochemical switching was found with the sonolysis of iron pentacarbonyl (Fig. 23).Pyrolysis and photolysis form pyrophoric iron and diiron nonacarbonyl respectively, in contrast to sonolysis, which gives triiron dodecacarbonyl, a compound not easily accessible by other methods. A pyrolytic... 

In a non-aqueous medium, radicals other than OH can be generated. The sonolysis of organic solvents was thus studied by e.s.r. (p. 59). The decomposition of DPPH (2,2-diphenyl-l-picryl-hydrazyl) is a very sensitive probe of sonolysis of organic species, was used to determine a relative scale of the intensity of cavitation (p. 56). The decomposition of iron pentacarbonyl Fe(CO)5 cannot be used due to the toxicity of this molecule. The common drawback associated with chemical dosimeters is the dependence on frequency. Such standards should be considered as relative methods unable to provide an absolute value of energy. 

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