Syntheses, X-ray crystal structures andproperties of di- and tetra-ferrocenyl nickel-bis(1,4-dithiin-5,6-dithiolate)complexes
2000
Tetra-n-butylammonium salts of nickel-bis(2-ferrocenyl-1,4-dithiin-5,6-dithiolate)
(1; TBA[Ni(fcvdt)2])
and nickel-bis(2,3-diferrocenyl-1,4-dithiin-5,6-dithiolate)
(2; TBA[Ni(dfcvdt)2])
have been successfully synthesized. The crystal structures of complex 1 and 2
were determined by X-ray analysis. The [Ni(fcvdt)2]−
anion has a chair-like conformation with the two ferrocenyl groups folding
up and down while the [Ni(dfcvdt)2]−
anion has a boat-like conformation with four ferrocenyl groups folding
up. Cyclic voltammograms of these complexes show two reversible redox peaks
at around −0.9 V and −0.2 V (Ag/Ag+,
THF) associated with the Ni(II) dithiolate complex
and one quasi-reversible peak associated with the ferrocenyl moieties.
The complexes exhibit a strong near-IR absorption at 1178 nm (log e = 3.99)
for complex 1 and at 1155 nm (log e = 4.06)
for complex 2. This suggests the
possibility of utilizing these complexes as near-IR dyes for absorbing
lower energy.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
15
References
15
Citations
NaN
KQI