in toluene synthesis under N2 and with dry, freshly distd. solvents; solving Mo complex in toluene, suspending Fe2(CO)9 in soln., stirring for 6 h at 50°C, filtration over silica gel, removal of solvent in vac.;; solving in CH2Cl2, chromatography on SiO2 gel column at -25°C with n-pentane/toluene (20/1) gave Fe3(CO)12, (8/1-5/1) C20H5Fe4MnO15P2, (5/1) C23H10Fe3Mn2O13P2, (1/1) C23H5Fe5MnO18P2; removal of solvent, recrystn.; elem. anal.;;