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Single Helicates of Dipalladium(II) Hexapyrroles: Helicity Induction and Redox Tuning of Chiroptical Properties
Author(s) -
Eerdun Chaolu,
Hisanaga Satoshi,
Setsune Junichiro
Publication year - 2013
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201207113
Subject(s) - helicity , imine , redox , chemistry , combinatorial chemistry , stereochemistry , crystallography , physics , organic chemistry , particle physics , catalysis
Hexapyrrole‐α,ω‐dialdehyde , which has eight donor atoms, afforded a dipalladium(II) single helicate (see picture; Pd pink, O red, N blue). A rapid interchange of the helical screw was slowed down by imine formation at the terminal aldehyde units with ( R )‐(−)‐1‐cyclohexylethylamine, leading to an overwhelming excess of a P ‐helical screw. This stable dinuclear single helicate has a redox‐driven reversible change in chiroptical properties.