(Spectro)Electrochemistry of 3‐(Pyrid‐2‐yl)‐s‐Tetrazine‐ and 1,2‐ (Dihydro)pyridazine Tricarbonylrhenium(I)chloride

The electrochemistry and spectroelectrochemistry (SEC) of the three [ReCl(CO)3(N N)], N N=3‐(pyrid‐2‐yl)‐1,2,4,5‐tetrazine [1], 3‐(pyrid‐2‐yl)‐4‐ferrocenyl‐4,5‐dihydropyridazine [1H2Fc], and 3‐(pyrid‐2‐yl)‐4‐ferrocenyl‐pyridazine [1Fc], are reported. The ligand's conjugation affects the reducti...

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Published inEuropean journal of inorganic chemistry Vol. 2022; no. 10
Main Authors Schnierle, Marc, Winkler, Mario, Filippou, Vasileios, Slageren, Joris, Ringenberg, Mark R.
Format Journal Article
LanguageEnglish
Published Weinheim Wiley Subscription Services, Inc 08.04.2022
Subjects
Charge transfer
Conjugation
Density functional calculations
Electrochemistry
Ferrocene
Inorganic chemistry
Pyridazines
Spectroelectrochemistry
Structure elucidation
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Summary:The electrochemistry and spectroelectrochemistry (SEC) of the three [ReCl(CO)3(N N)], N N=3‐(pyrid‐2‐yl)‐1,2,4,5‐tetrazine [1], 3‐(pyrid‐2‐yl)‐4‐ferrocenyl‐4,5‐dihydropyridazine [1H2Fc], and 3‐(pyrid‐2‐yl)‐4‐ferrocenyl‐pyridazine [1Fc], are reported. The ligand's conjugation affects the reduction potentials as well as intramolecular charge transfers observed in the UV‐vis‐NIR spectrum. The spectroscopic observations were further supported by DFT calculations. Tetrazine ligand modification through [4+2] cycloaddition of ferrocenyl olefins, color arises from dramatic change in the LUMO energy of the ligand.
ISSN:1434-1948
1099-0682
DOI:10.1002/ejic.202100998