221244-13-9Relevant academic research and scientific papers
Redox active organoiron alkynyl centers with a coordination site: An approach toward molecular plugs. Complexation reactions with (THF)W(CO)5 and (PhCN)2MCl2 (M=Pd, Pt)
Le Stang, Sylvie,Paul, Frédéric,Lapinte, Claude
, p. 403 - 425 (1999)
The synthesis and full characterization of the functionalized complexes 3a-c [(dppe)Cp*Fe(CC-L)] (L=4-Py, 3-Py, 2-Py; dppe=1,2-bis(diphenylphosphino)-ethane; Cp=pentamethylcyclopentadienyl) are reported. These electroactive compounds, stable under two redox states, behave as typical pyridyl ligands towards simple metal precursors of tungsten, palladium or platinum complexes. With (THF)W(CO)5 bi-metallic iron-tungsten complexes [(dppe)Cp*Fe(CC-Py)W(CO)5] (5a-b) were isolated. After chemical oxidation their corresponding [(dppe)Cp*Fe(CC-Py)W(CO)5][PF6] (5a-b+) salts were isolated and characterized as well. With the palladium(II) and platinum(II) dichloride (PhCN)2MCl2 precursors, neutral, mono- and dicationic trimetallic complexes of the type ([(dppe)Cp*Fe(CC-4-Py)]2MCl2)[PF6] n (M=Pd: 8a, Pt: 10a; n=0, 1, 2) were similarly isolated and studied. The mixed valence states (n=1; MV) exhibit class-I properties.
New pyridyl-functionalized organoiron alkynyl complexes. Easy access to polymetallic architectures featuring an electroactive site by simple co-ordination reactions
Le Stang, Sylvie,Lenz, Dirk,Paul, Frederic,Lapinte, Claude
, p. 189 - 192 (2007/10/03)
The functionalized complexes 3a-d [(dppe)Cp*Fe(CC-L)] (L=4-Py, 3-Py, 2-Py) were isolated with good yields from the alkynyl complex 1 [(dppe)Cp*Fe(CCH)] (dppe=1,2-bis(diphenylphosphino)ethane) from the corresponding bromopyridines using a Sonogashira-coupling reaction. These redox active compounds are stable under two redox states and react as usual pyridyl ligands towards methyl iodide or (THF)W(CO)5. They allow easy access to the corresponding pyridinium salt 4a or to the dimetallic iron-tungsten complex 5a.
