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Low temperature spectroelectrochemistry for the characterization of highly reduced σ‐alkyl iron halogenated porphyrins
Author(s) -
Gueutin Claire,
Lexa Doris
Publication year - 1996
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140081110
Subject(s) - deoxygenation , alkyl , chemistry , oxygen , photochemistry , porphyrin , inorganic chemistry , ion , organic chemistry , catalysis
Low temperature spectroelectrochemistry was performed to generate highly reduced σ‐alkyl iron porphyrins, which were unstable at room temperature and oxygen sensitive. Suitable conditions for obtaining a stable compound were provided by keeping the thin‐layer cell under strictly anaerobic conditions. To calibrate the cell and check the deoxygenation the electrochemically produced radical anion of ZnTPP was used as an oxygen probe. By satisfying the anaerobic conditions, mainly due to the fact that no Teflon or Kel F spacers were used, it was possible for the first time to generate and characterize highly reduced σ‐alkyl iron porphyrins at low temperatures. The ligation reactions of these species were also stabilized.