| Abstract: | A (Phosphonioalkinyl)- and an Acetyl(tetracarbonyl)iron From the reaction of 1,1,3,3-tetrakis(dimethylamino)-1λ5,3λ5-diphosphete, 1 , and Fe(CO)5 {bis(dimethylamino)phosphoryl-methyl]-bis(dimethylamino)phosphonioethinyl}(tetracarbonyl)iron, 4 , and {1,1,3,3-tetrakis(dimethylamino)-1,4-dihydro- 1λ5,3λ5-1,3]diphosphetium-2-carbonyl}(tetracarbonyl)-iron, 5 , can be isolated as crystalline products. The nmr, mass and ir spectra of the two compounds as well crystal and molecular structures of 4 are reported. The bonding situation in compounds 4 and 5 are discussed in detail. |
