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Heterotri‐ and Heteropentanuclear Copper(I)–Ferrocenyl Complexes Assembled through a “Click” Strategy: A Structural, Electrochemical, and Spectroelectrochemical Investigation
Author(s) -
Manck Sinja,
Röger Marc,
van der Meer Margarethe,
Sarkar Biprajit
Publication year - 2017
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201601075
Subject(s) - ferrocene , chemistry , moiety , redox , electrochemistry , click chemistry , copper , crystallography , chelation , combinatorial chemistry , ligand (biochemistry) , metallocene , polymer chemistry , inorganic chemistry , stereochemistry , organic chemistry , electrode , biochemistry , receptor , polymerization , polymer
The ferrocene moiety with its well‐defined redox behavior and its substitution potential is ideally suited for the assembly of multinuclear complexes. Utilizing the “click” strategy, we present here mono‐ and disubstituted pyridyl–triazolyl–ferrocene units. The “pyridyl–triazolyl” chelating pocket is then used to chelate to copper(I) centers that additionally contain dppf [dppf = 1,1′‐(diphenylphosphino)ferrocene], which has an additional ferrocene moiety. This strategy delivers a heterotrinuclear (Fe–Cu–Fe) and a heteropentanuclear (Fe–Cu–Fe–Cu–Fe) complex. All complexes were characterized by 1 H and 13 C NMR spectroscopy and by mass spectrometry, and the heteropentanuclear complex was characterized by single‐crystal X‐ray diffraction. Electrochemistry and UV/Vis/NIR spectroelectrochemistry were used to investigate the redox properties of the complexes and to determine the site of electron transfer. The results presented here show the potential of “click”‐derived ligands in generating heteromultinuclear assemblies and the potential of ferrocene to function as a rigid, redox‐active unit in these assemblies.