155351-36-3Relevant academic research and scientific papers
Syntheses, structures, some reactions, and electrochemical oxidation of ferrocenylethynyl complexes of iron, ruthenium, and osmium
Bruce, Michael I.,Low, Paul J.,Hartl, Frantisek,Humphrey, Paul A.,De Montigny, Frederic,Jevric, Martyn,Lapinte, Claude,Perkins, Gary J.,Roberts, Rachel L.,Skelton, Brian W.,White, Allan H.
, p. 5241 - 5255 (2008/10/09)
The syntheses and characterizations of several complexes containing ferrocenylethynyl and ferrocene-1,1′-bis(ethynyl) groups attached to M(PP)Cp′ [M = Fe, Ru, PP = dppe, Cp′ = Cp*; M = Ru, Os, PP = (PPh3)2, dppe, Cp′ = Cp] are descri
Oxidized ruthenium ferrocenylacetylide complexes, [(η-C5H5)L2RuCCFc]PF6 and [(η-C5Me5)L2RuCCFc]PF6 (L = phosphines). Electron-delocalized heterobinuclear mixed-valence complexes
Sato, Masaru,Shintate, Hitoshi,Kawata, Yasushi,Sekino, Masato,Katada, Motomi,Kawata, Satoshi
, p. 1956 - 1962 (2008/10/08)
The reaction of ferrocenylacetylene with (η-C5R5)L2RuCl [R = H or Me; L2 = 2PPh3, Ph2-PCH2CH2PPh2 (dppe), or (Ph2PC5H4)2Fe (dppf)] in the presence of NH4PF6 and the subsequent treatment with alkali gave ruthenium(II) ferrocenylacetylide complexes (η-C5R5)L2RuCCFc in good yields. Cyclic voltammetric data suggest the large electron delocalization between the Fe atom of the ferrocene moiety and the Ru(II) atom in their one-electron-oxidized complexes. The IR spectra of the oxidized ferrocenylacetylide complexes and the molecular structure of [(η-C5H5)(Ph3P)2Ru(CCFc)]PF 6 determined by X-ray diffraction gave an evidence for such electron delocalization. Crystallographic data for 12 are as follows: space group P21/a, a = 17.176(9) A?, b = 12.055(7) A?, c = 22.480(9) A?, β = 101.35(4)°, V = 4563(4), Z = 4. The complexes showed low-energy absorption bands assigned to intervalence transfer transitions in the near-infrared (NIR) region. The parameter α2, which shows the degree of ground-state delocalization in a mixed-valence complex, is almost as large as that in the [0.0] ferrocenophane monocation. The NIR spectrum, along with the Mo?ssbauer spectra, suggest that the oxidized acetylide complexes are a well electron-delocalized class II type of a heterobinuclear mixed-valence complex.
