Ferrocene Rotary Switches Featuring 2‐Pyridyl‐1,2,3‐triazole “Click” Chelates

Three ferrocene‐based rotary switches featuring 2‐pyridyl‐1,2,3‐triazole (pytri) “click” chelates have been developed. The rotors can be switched from a folded (syn) to extended (anti) conformation by the addition of [Cu(CH3CN)4](PF6) and 6,6′‐dimesityl‐2,2′‐bipyridine. This extension process could...

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Bibliographic Details
Published inEuropean journal of inorganic chemistry Vol. 2022; no. 5
Main Authors Findlay, James A., Ross, Daniel A. W., Crowley, James D.
Format Journal Article
LanguageEnglish
Published Weinheim Wiley Subscription Services, Inc 16.02.2022
Subjects
2-Pyridyl-1,2,3-triazole
Chelates
Copper
Ferrocene
Inorganic chemistry
Molecular switching
Rotors
Switches
Triazoles
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Summary:Three ferrocene‐based rotary switches featuring 2‐pyridyl‐1,2,3‐triazole (pytri) “click” chelates have been developed. The rotors can be switched from a folded (syn) to extended (anti) conformation by the addition of [Cu(CH3CN)4](PF6) and 6,6′‐dimesityl‐2,2′‐bipyridine. This extension process could be reversed by the addition of 1,4,8,11‐tetraazacyclotetradecane (cyclam) to sequester the Cu(I) ions. Disappointingly, the weakness of the pytri chelates prevented the development of an electrochemically switchable system. Three ferrocene‐based rotary switches featuring 2‐pyridyl‐1,2,3‐triazole (pytri) “click” chelates have been developed. The addition and removal of [Cu(6,6′‐dimesityl‐2,2′‐bipyridine)](PF6) units triggers the extension and contraction of the ferrocene‐based rotors.
Bibliography:Dedicated to the memory of Prof. Jack Dunitz (1923‐2021)
ISSN:1434-1948
1099-0682
DOI:10.1002/ejic.202100948