Synthesis and structure of ferrocenylphosphinic acids

Novel paste electrodes based on phosphonium salt room temperature ionic liquids for studying the redox properties of insoluble compounds

“…Complex 2 was obtained as side product of the synthesis of 1, 1′-ferrocenediyl-bis(phenylphosphinic acid) [42]. Elemental analysis: calcd.…”

Different Complexation Behavior of P‐Functionalized Ferrocene Derivatives Towards SnCl2, SnCl4 and SnPh2Cl2: Auto‐ionization and Redox‐Type Reactions

“…[9] Ferrocene (Fc) has becomeapopular backbone for av ariety of chelate ligands because the presence of aF cu nit provides i) ac onvenient 3D environment for buildingv ariousc helating structures,i i) the possibility of planar chirality (ina ddition to atom chirality in the side branches), and iii)awell-definede lectrochemical response sensitive to the changesi nt he ligating branches (conformation,c oordination, donor-acceptor and Lewisa cid-base interactions). Amongs uch ligands, the phosphorus-substituted representatives J-V [10][11][12][13][14][15][16][17] (Scheme2)h ave been reporteda nd their complexationb ehavior towards transition metal cations has been explored. [18] To the best of our knowledge there are only two reports dealingw ith the reactivity of 1,1'-bis(diphenylphosphino)ferrocene dioxide (dppfO2, U)t owards SnCl 4 ,a nd SnBr 4 ,r espectively,both giving 1:1c omplexes.…”

Oligomeric ferrocene rings

“…1a), prepared from pure 1,1′-dibromoferrocene or 1,1′-diiodoferrocene (fc 1 I 2 , fc = ferrocene-1,1′-diyl) 31,32 . The only other reported cyclo(1,1′-oligoferrocene) is cyclo(1,1′-terferrocene) (cyclo [3]), recently observed as a side product during the synthesis of (ferrocene-1,1′-diyl)bis(Hphosphinic acids) 33,34 . To the best of our knowledge, the only other isolated cyclic ferrocene oligomers are isomeric cyclo(1,2-terferrocene)s 23,35 and cyclo(1,1′,2,2′-terferrocene) 36 .…”