Five-coordinate complexes of iron(II) with secondary phosphines

✍ Scribed by Mario Bressan; Pierluigi Rigo

• Book ID: 104138197
• Publisher: Elsevier Science
• Year: 1979
• Tongue: English
• Weight: 518 KB
• Volume: 37
• Category: Article
• ISSN: 0020-1693
• DOI: 10.1016/s0020-1693(00)95541-5

✦ Synopsis

The reactions of iron salts FeX, o< = Cl, Br, I) and Fe Yz l 6Ha 0 (Y = BF,, PF,) with the secondary phosphines HPRz (R, = (CH,)Ph, (GH, )Ph, (G-Hs),) in alcohol solution have been investigated. The five-coordinate complexes [FeX(HPR2j, ] Y and [Fe-(HPRz)J Yz have been isolated and characterised by elemental analysis, IR and visible spectra and conductivity and magnetic measurements. lhe [FeX-(HPR,)d]' complexes are in a triplet ground state, while the magnetic moments at room temperature of the [Fe(HPR2)J2+ cations are found in the range 1.4-2.5 B.M. These five-coordinate complexes react with carbon monoxide to yield bis-carbonyl den'vatives of the type [FeX(CO)2(HPR2)3]' and [Fe-(CO)2(HPR2)4]2' respectively.