Brunner, Henri and Gehart, G. and Meier, Walter and Wachter, Joachim and Riedel, Astrid and Elkrami, S. and Mugnier, Y. and Nuber, B.
Preparative, structural, and electrochemical investigations on peralkylated niobocene dichlorides and difluorides.
Organometallics 13 (1), pp. 134-140.
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CP(dagger)2NbCl2 (CP(dagger) = 175-C5Me4Et) (1b) was synthesized from NbCl5 and a slight excess of Cp(dagger)Li and NaBH4. Its electrochemical (2 e-, E1/2 = -1.6 V) and chemical reduction (2 equiv of Na/Hg) was studied showing that peralkylation of the Cp ligand facilitates two-electron reduction compared to less substituted CP2NbHal2 derivatives. The reduced solutions of CP*2NbCl2 (CP* = C5Me5) ...
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