{CoCl2(H2O)2} in toluene CoCl2(H2O)2 and phosphine added to toluene, stirred soln. brought to reflux, Fe(CO)5 added, refluxed for ca. 4.5 h; cold react. mixt. eluted through CoCl2(H2O)6/alumina/silica gel column with benzene, evapd. in vac., chromd. (SiO2, light petroleum/CH2Cl2), sublimed (105-115°C, 0.02 mmHg); elem. anal.;