in dichloromethane Irradiation (UV/VIS); N2-atmosphere; 0.5 M CCl4 in CH2Cl2, irradiation into MLCT UV-band of title compd.; not isolated, reaction followed by UV/VIS spectroscopy and quantum yielddetn.;

in tetrahydrofuran Irradiation (UV/VIS); irradn. at room temp. of soln. of complex with t-BuNO as spin trapping reagent (mercury lamp); ESR spect.;