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Tuning the properties of redox-active guanidino-functionalized aromatic ligands by substitution: experiment and theory

Substitution of the aromatic hydrogen atoms in the electron donors 1,2,4,5-tetrakis(tetramethylguanidino)benzene (1a) and 1,2,4,5-tetrakis(N,N′-dimethyl-N,N′-ethyleneguanidino)benzene (1b) by iodide (to give 2a and 2b) and nitro groups (to give 3a and 3b) afforded new redox-active ligands. Their pro...

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Bibliographic Details
Main Authors: Peters, Anastasia (Author) , Herrmann, Hendrik Hans (Author) , Magg, Martin (Author) , Kaifer, Elisabeth (Author) , Himmel, Hans-Jörg (Author)
Format: Article (Journal)
Language:English
Published: 09 February 2012
In: European journal of inorganic chemistry
Year: 2012, Issue: 10, Pages: 1620-1631
ISSN:1099-0682
DOI:10.1002/ejic.201101366
Online Access:Verlag, Volltext: http://dx.doi.org/10.1002/ejic.201101366
Verlag, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/ejic.201101366
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Author Notes:Anastasia Peters, Hendrik Herrmann, Martin Magg, Elisabeth Kaifer, Hans-Jörg Himmel
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Summary:Substitution of the aromatic hydrogen atoms in the electron donors 1,2,4,5-tetrakis(tetramethylguanidino)benzene (1a) and 1,2,4,5-tetrakis(N,N′-dimethyl-N,N′-ethyleneguanidino)benzene (1b) by iodide (to give 2a and 2b) and nitro groups (to give 3a and 3b) afforded new redox-active ligands. Their properties (electron donor capacity, Brønsted basicity and optical spectra) have been analyzed and compared with the unsubstituted 1,2,4,5-tetrakis(guanidino)benzenes. The experimental results are supplemented by quantum chemical calculations. The first late-transition metal complex of the push-pull ligand 3a was prepared and characterized and its oxidation studied.
Item Description:Gesehen am 26.07.2018
Physical Description:Online Resource
ISSN:1099-0682
DOI:10.1002/ejic.201101366

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