| Abstract: | The carbodiphosphorane C(PPh3)2 ( 1 ) reacts with Mn2(CO)10] in THF to produce quantitatively the salt‐like complex (HC{PPh3}2)Mn(CO)5] ( 2 ) as THF solvate. If the reaction is carried out in 1,2‐dimethoxyethane (DME) small amounts of Mn(OPPh3)2{O2CC(PPh3)2}2]Mn(CO)5]2 ( 3 ) as DME solvate along with solvent free 2 as the main product were isolated. Proton abstraction from the solvent led to the formation of 2 ; the ligands OPPh3 and O2CC(PPh3)2}2 of 3 are the results of a side reaction from Mn2(CO)10] and 1 in a Wittig type manner. From the reaction in benzene small amounts of 3 were also obtained, crystallizing as benzene solvate 3· 4C6H6. The crystal structures of 2· THF, 2 , 3· 1.75DME and 3· 4C6H6 are reported. The compounds are further characterized by IR and 31P NMR spectroscopy. |
