The preparation, characterizations, and electrochemical measurements of the terpyridine-ferrocenylalkynespacers (tpy-C
mages/entities/tbd1.gif">C
-(fc)
n-C
mages/entities/tbd1.gif">C
-tpy; tpy
= terpyridyl; fc = ferrocenyl;
n = 2, 3) are described. In theelectrochemical measurements, the charge could be delocalized to the cyclopentadienyl and ethynylmoieties caused by the built-up charge density upon oxidation of the ferrocenyl moiety.