supporting electrolyte. The spectroelectrochemical studies reveal that ferrocenyl units placed in the α-position of the thiophene ring interact more strongly with the heterocycle than those in the β-position. Thus, the intensity of the ligand-to-metal charge transfer (LMCT) absorptions, caused by interactions between the thiophene core and the ferrocenyl moieties, decreases from 1+ to 2+. Furthermore,
二茂铁基
噻吩2,3-Fc 2 - c C 4 H 2 S(9),2,4-Fc 2 - c C 4 H 2 S(10)和2,3,4-Fc 3 - c C 4 HS (11)已经制备由2-或3-倍适当
溴噻吩的Negishi交叉偶联反应5 - 7与FcZnCl(8 ; FC =
铁(η 5 -C 5 H ^ 4)(η 5 -C 5高5))在[Pd(PPh 3)4 ]或[Pd(CH 2 CMe 2 P t Bu 2)(μ-Cl)] 2作为催化剂的情况下。关于
二茂铁基取代的芳族杂环的电子转移研究,电
化学以及原位紫外-可见-近红外光谱电
化学都突出了这些化合物在一系列单,二,三和四茂
铁噻吩中的电
化学性质,包括2-FC- ç ç 4 ħ 3 S(1),3-FC- ç ç 4 ħ 3 S(2),2,5--Fc的2 -c C 4 H 2 S( 3),3,4-Fc 2 - c C 4 H 2 S( 4),2,3,5-Fc