THF in tetrahydrofuran Irradiation (UV/VIS); Ar-atmosphere; treatment of Fe-complex with thiolate, addn. to slight excess of Mn-complex (previously irradiated in THF), stirring for 1 h, irradiation for 1 h, stirring for 1 h; filtration over Al2O3, evapn. (vac.), chromy. (Al2O3, CH2Cl2/hexane=1:3v/v, last fraction), crystn. (layering CH2Cl2 soln. with pentane, -20°C); elem. anal.;