Fe(CO)22L, Dicarbonylbis(trimethylphosphit)eisen-Komplexe mit den Liganden L = Ethen, Diphenylethin und SO2

Article abstract of DOI:10.1016/0022-328X(92)80054-2

The ethene ligand in Fe(CO)22(η²-C2H4) (1) can be substituted by reaction of 1 with diphenylethine leading to formation of the previously known Fe(CO)22(η²-C2Ph2) (3).This reaction represents a new path to the hitherto rare mononuclear η²-alkine iron complexes.Another related compound, Fe(CO)22(SO2) (4) was found unexpectedly upon reacting 1 with thiophenedioxide, and was prepared subsequently from 1 and SO2. Compounds 1, 3 and 4 have been characterized by crystal structure analyses.Their structures are very similar, having trigonal-bipyramidal coordination of the iron atom and phosphite groups in trans positions.They only differ by the ligands ethene, diphenylethine or SO2 in equatorial positions.