Synthesis, Properties and Reactivity Studies of a Hetero‐dicopper Complex Consisting of a Porphyrin and a Bispyridylamine Moiety Connected by a Xanthene Backbone

Synthesis, characterization and reactivity studies of a hetero‐dicopper complex, particularly towards oxygen reduction are presented. A bischlorido copper(II) trishistidine‐type coordination unit is positioned directly above a copper porphyrin unit. The close distance between the two coordination fr...

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Bibliographic Details
Published in:European journal of inorganic chemistry 2023-05, Vol.26 (14), p.n/a
Main Authors: Budhija, Vishal, Langevelde, Phebe H., Krause, Konstantin B., Cula, Beatrice, Hetterscheid, D. G. H., Schwalbe, Matthias
Format: Article
Language:English
Subjects:
bimetallic-complexes
Coordination
Copper
electrochemistry
EPR spectroscopy
Inorganic chemistry
Oxygen
porphyrinoids
Porphyrins
Synthesis
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Summary:Synthesis, characterization and reactivity studies of a hetero‐dicopper complex, particularly towards oxygen reduction are presented. A bischlorido copper(II) trishistidine‐type coordination unit is positioned directly above a copper porphyrin unit. The close distance between the two coordination fragments is secured by a rigid xanthene backbone. Surprisingly, the dinuclear complex is not active towards oxygen reduction unlike the earlier published mononuclear analogues with a bispyridylamine copper center. However, the compound architecture of this multinuclear metal complex is interesting and can play an important role in the development of new catalysts for ORR. The synthesis and structural characterization of a hetero‐dicopper complex mimicking the reaction center of CcO is reported. A bischlorido bispyridylamine copper(II) unit resembling the trishistidine site in CcO is positioned near a copper porphyrin unit. Reactivity studies towards oxygen and proton reduction are presented. Surprisingly, no activity is observed unlike earlier published mononuclear analogues.
ISSN:1434-1948
1099-0682
DOI:10.1002/ejic.202200743