154991-41-0Relevant academic research and scientific papers
Preparation, characterization and electrochemical studies of 1,1′-bis(diphenylphosphino)ferrocene (dppf) derivatives. Crystal structure of [dppfCo(NO)2] [SbF6]
Gerbase, Annelise E.,Vichi, Eduardo J.S.,Stein, Edison,Amaral, Livio,Vasquez, Adalberto,Hoerner, Manfredo,Maichle-Moessmer, Caecilia
, p. 19 - 27 (2008/10/08)
The neutral dppfFe(NO)2 (1), the novel cationic [dppfCo(NO)2] [SbF6] (2), as well as the dppfFe(CO)3 (3) (dppf=1,1′-bis-(diphenylphosphino)ferrocene) complexes were prepared and characterized. The interaction between the two metallic centers through the dppf ligand was studied in the solid state by 57Fe Moessbauer spectroscopy and in solution by cyclic voltammetry. The Moessbauer parameters are compared with those of other dppfMLn complexes. Electrochemical studies performed on these complexes show the great influence of the MLn moiety on the redox processes of the dppf iron center. The crystal structure of complex 2 was determined (C34H28CoF6FeN2O2P 2Sb). The compound crystallizes in the triclinic, space group P1, a = 10.441(2), b= 10.755(2), c= 17.320(5) A, α = 104.10(2), β = 0.504(10), γ = 111.504(10)°, U= 1744.7(7) A3, Z = 2, R = 0.0765, wR2 = 0.1878. In this complex, the cobalt atom is coordinated to two nitrosyl ligands and to phosphorus atoms of the dppf ligand, providing a distorted tetrahedral geometry.
Reactivity of a (Fe-NO)-(Fe-NO3) system in the presence of a ferrocene-ferricinium group tethered nearby via a ferrocenyl phosphine linkage (FcP2): crystal structures of 2(μ-FcP2)> and
Munyejabo, Viateur,Damiano, Jean-Pierre,Postel, Michele,Bensimon, Corinne,Roustan, Jean Louis
, p. 61 - 70 (2007/10/02)
The nitrosyl dimer 2> (1) reacts with 1,1'-bis(diphenylphosphino)ferrocene (FcP2) to yield 2(μ-FcP2) (2), the structure of which has been determined.The FcP moiety bridges two Fe(NO)2(Cl) groups symmetrically.Oxygenation of 1 in the presence of FcP2 yields (5): Complex 5 catalyses the autoxidation of cyclohexene.It transfers the oxygen atoms of its nitrato groups to phosphines.When allowed to react with an excess of FcP2, 2 gives (4); the subsequent formation of (3) is attributed to th e reaction of 4 with chlorine liberated in situ.The structure of 4 was also determined.Keywords: Iron; Nitrosyl; Ferrocene ligand; Nitrato complex; X-ray diffraction; Oxidation
