Mehrkernkomplexe aus PH3- und RPH2-Komplexen mit Co2(CO)8 / Polynuclear Complexes from PH3 and RPH2 Complexes with Co2(CO)8

Abstract

The phosphine complexes M-PH3 (1), M-PH2Me (2). M-PH2Ph (3). and M-PH2/Bu (4) with M = Cr(CO)5. Mo(CO)5, W(CO)5, MnCp(CO)2. of which 2 and 4 were prepared for the first time, were reacted with Co2(CO)8. All four PH3 complexes yielded the clusters M-PCo3(CO)9 (5) with external M units as confirmed by a crystal structure determination of (CO)5W-PCo3(CO)9. Of the RPH2 complexes 2 and 3 the chromium and tungsten compounds gave open trinuclear complexes of the type M-PRCo2(CO)7 (6, R = Me: 7, R = Ph). The manganese containing complexes 2 and 3 and Co2(CO)8 formed the dinuclear compounds Cp(CO)2Mn(μ-PRH)Co(CO)3 (8d, R = Me; 9d, R = Ph). The molybdenum containing complexes 2 and 3 yielded unstable compounds of higher nuclearity with Co2(CO)8. The tBuPH2 complexes 4 did not react.