Synthesis and Coordination Chemistry of Fluorinated Cyclopentadienyl Ligands

Abstract

The incorporation of fluorinated substituents in cyclopentadienyl anions leads to distinct changes in the properties of the corresponding metal complexes, e.g., with regards to electrochemical properties or metal–ligand bonding energies. This review summarizes the synthetic challenges of the preparation and coordination of fluorinated cyclopentadienyl anions.1 Introduction2 Fluorinated Cyclopentadienyls3 Cyclopentadienyls with One CF3 Group4 Cyclopentadienyls with Four CF3 Groups5 Cyclopentadienyls with Five CF3 Groups6 Cyclopentadienyls with ‘Fluorous Ponytails’7 Cyclopentadienyls with C6F5 Groups8 Trends in Interaction Energies9 Conclusion

Blickpunkt Nachwuchs: Supersäuren und starke Oxidationsmittel

“…Anders als die elektronenreichen Cyclopentadienyl(Cp)-Liganden wie [C 5 (CH 3 ) 5 ] -(Cp*) ist die Koordinationschemie fluorierter Cp-Liganden kaum erforscht. 8) Mehr als 40 Jahre nach der Erstsynthese haben wir im Jahr 2022 erstmals das perfluorierte Cp*-Anion [C 5 (CF 3 ) 5 ] − an ein Metallzentrum koordiniert: 9,10) Der Komplex W…”

Synthesis and structural characterization of stable coinage metal (Cu, Ag, Au) cyclopentadienyl complexes

“…[21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37] As a consequence, we considered application of the peruorinated Cp* analogue [C 5 (CF 3 ) 5 ] − , whose initial coordination and reactivity was recently investigated. [38][39][40] Being sterically demanding, but also oxidatively stable, this Cp ligand appeared to be a suitable candidate for the elucidation of coinage metal Cp coordination chemistry.…”

Cyсlopentadienone and Pyrone Derivatives as Precursors of Electron-Deficient Cycloheptatrienes: Quantum Chemical Investigation and Synthesis

“…30 Cyclopentadienones, conversely, have been used in the synthesis of a series of cycloheptatrienes containing upto five electron-withdrawing groups via their reactions with cyclopropenes or diazo propenes. This approach is also limited by the availability 31 and stability of pro-antiaromatic cyclopentadienones. Therefore, in our previous work 4 we investigated the reactions of diphenyldi(methoxycarbonyl)cyclopentadienone since it is available and sufficiently stable.…”