Photochemistry of electron donor-acceptor complexes of the bis(fulvalene) dicobalt mono- and dications

S. F. Clark, R. J. Watts, Daniel L DuBois, J. s. Connolly, J. C. Smart

Research output: Contribution to journalArticle

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Abstract

Addition of carbon tetrachloride or chloroform to acetonitrile solutions of the bis(fulvalene)dicobalt monocation results in the appearance of new absorption features which are attributed to formation of electron donor-acceptor complexes. The association constants of these complexes aer 2.36 /mole fraction (carbon tetrachloride) and 2.74 /mole fraction (chloroform). Excitation in the absorption bands of the donor-acceptor complexes results in oxidation of the monocation to the dication with high quantum yields. A donor-acceptor complex is also formed when sodium tetraphenylborate is added to acetonitrile solutions of the bis(fulvalene)dicobalt dication. Spectroscopic determination of the association constant of the dication with tetraphenylborate yields a value of 26.3 /mole fraction. Excitation of the absorption bands of the ion-pair results in high quantum yields for formation of the bis(fulvalene) dicobalt monocation. Biphenyl is found in photolyzed solutions as a byproduct of the oxidation of the tetraphenylborate anion.

Original languageEnglish
Pages (from-to)273-292
Number of pages20
JournalCoordination Chemistry Reviews
Volume64
Issue numberC
DOIs
Publication statusPublished - 1985

Fingerprint

Tetraphenylborate
Photochemical reactions
photochemical reactions
Carbon tetrachloride
Carbon Tetrachloride
carbon tetrachloride
Quantum yield
Chloroform
Chlorine compounds
Acetonitrile
chloroform
acetonitrile
Electrons
Absorption spectra
Association reactions
absorption spectra
Oxidation
oxidation
electrons
excitation

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Photochemistry of electron donor-acceptor complexes of the bis(fulvalene) dicobalt mono- and dications. / Clark, S. F.; Watts, R. J.; DuBois, Daniel L; Connolly, J. s.; Smart, J. C.

In: Coordination Chemistry Reviews, Vol. 64, No. C, 1985, p. 273-292.

Research output: Contribution to journalArticle

Clark, S. F. ; Watts, R. J. ; DuBois, Daniel L ; Connolly, J. s. ; Smart, J. C. / Photochemistry of electron donor-acceptor complexes of the bis(fulvalene) dicobalt mono- and dications. In: Coordination Chemistry Reviews. 1985 ; Vol. 64, No. C. pp. 273-292.
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