A clash of cultures: metal carbonyl functionalized Werner complexes

Abstract

Reactions of [Fe( 1) 2][PF 6] 2 ( 1=4′-diphenylphosphino-2,2′:6′,2″-terpyridine) with [M′(CO) 5(THF)] (M′=Mo or W) yield [Fe{( μ- 1)M′(CO) 5} 2][PF 6] 2. Treatment of [Ru(Cltpy) 2][PF 6] 2 (Cltpy=4′-chloro-2,2′:6′,2″-terpyridine) with the [Ph 2P] − anion gives [Ru( 1) 2][PF 6] 2 which functions as a nucleophile in reactions with [M′(CO) 5(THF)] (M′=Mo or W) to yield [Ru{( μ- 1)M′(CO) 5} 2][PF 6] 2. The bisphosphines [M( 1) 2] 2+(M=Fe or Ru) can be functionalized with triosmium carbonyl clusters by treatment with [Os 3(CO) 11(NCMe)]. All new products have been characterized by 1H-, 31P-NMR and IR spectroscopies and mass spectrometry, and the electrochemical properties of the iron(II) complexes have been investigated.