Radical Anions of Metallo-organic Diazines: Structural, Spectroscopic, and Theoretical Investigation of a Pyrazyl Radical Anion

2009 ◽  
Vol 28 (21) ◽  
pp. 6194-6200 ◽  
Author(s):  
Sylvie Choua ◽  
Jean-Pierre Djukic ◽  
Jérôme Dalléry ◽  
Richard Welter ◽  
Philippe Turek ◽  
...  
Keyword(s):  
Theoretical Investigation ◽  
Radical Anion ◽  
Radical Anions

Stability of radical anions derived from substituted 5-nitrofurans investigated by ESR spectroscopy

1985 ◽  
Vol 50 (7) ◽  
pp. 1594-1601 ◽  
Author(s):  
Jiří Klíma ◽  
Larisa Baumane ◽  
Janis Stradinš ◽  
Jiří Volke ◽  
Romualds Gavars
Keyword(s):  
Radical Anion ◽  
High Stability ◽  
Esr Spectroscopy ◽  
Reaction Path ◽  
Order Reaction ◽  
Second Order ◽  
Radical Anions ◽  
Second Order Reaction ◽  
Unpaired Electron Density ◽  
The Stability

It has been found that the decay in dimethylformamide and dimethylformamide-water mixtures of radical anions in five of the investigated 5-nitrofurans is governed by a second-order reaction. Only the decay of the radical anion generated from 5-nitro-2-furfural III may be described by an equation including parallel first- and second-order reactions; this behaviour is evidently caused by the relatively high stability of the corresponding dianion, this being an intermediate in the reaction path. The presence of a larger conjugated system in the substituent in position 2 results in a decrease of the unpaired electron density in the nitro group and, consequently, an increase in the stability of the corresponding radical anions.

A dinuclear [{(p-cym)RuIICl}2(μ-bpytz˙−)]+ complex bridged by a radical anion: synthesis, spectroelectrochemical, EPR and theoretical investigation (bpytz = 3,6-bis(3,5-dimethylpyrazolyl)1,2,4,5-tetrazine; p-cym = p-cymene)

2016 ◽  
Vol 45 (31) ◽  
pp. 12532-12538 ◽  
Author(s):  
Suman Kumar Tripathy ◽  
Margarethe van der Meer ◽  
Anupam Sahoo ◽  
Paltan Laha ◽  
Niranjan Dehury ◽  
...  
Keyword(s):  
Theoretical Investigation ◽  
Radical Anion ◽  
Ancillary Ligand

p-Cymene as an ancillary ligand favours the stabilisation of a tetrazine radical bridged in a dinuclear [{(p-cym)RuII}2(μ-bpytz˙−)]+ complex.

scholarly journals Crystalline salts of metal phthalocyanine radical anions [M(Pc˙3−)]˙− (M = CuII, PbII, VIVO, SnIVCl2) with cryptand(Na+) cations: structure, optical and magnetic properties

2017 ◽  
Vol 41 (14) ◽  
pp. 6866-6874 ◽  
Author(s):  
Dmitri V. Konarev ◽  
Maxim A. Faraonov ◽  
Alexey V. Kuzmin ◽  
Salavat S. Khasanov ◽  
Yoshiaki Nakano ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Radical Anion ◽  
Radical Anions ◽  
Metal Phthalocyanine ◽  
Metal Phthalocyanines ◽  
Optical And Magnetic Properties

Radical anion salts of metal phthalocyanines (M = CuII, PbII, VIVO and SnIVCl2) with the {cryptand(Na+)} cations have been obtained and studied.

Radical Anions, Radical‐Anion Salts, and Anionic Complexes of 2,1,3‐Benzochalcogenadiazoles

2018 ◽  
Vol 25 (3) ◽  
pp. 806-816 ◽  
Author(s):  
Nikolay A. Pushkarevsky ◽  
Elena A. Chulanova ◽  
Leonid A. Shundrin ◽  
Anton I. Smolentsev ◽  
Georgy E. Salnikov ◽  
...  
Keyword(s):  
Radical Anion ◽  
Radical Anions ◽  
Anionic Complexes

scholarly journals Persistent radical anion polymers based on naphthalenediimide and a vinylene spacer

RSC Advances ◽  
2018 ◽  
Vol 8 (27) ◽  
pp. 14760-14764 ◽  
Author(s):  
Sashi Debnath ◽  
Connor J. Boyle ◽  
Dongming Zhou ◽  
Bryan M. Wong ◽  
Kevin R. Kittilstved ◽  
...  
Keyword(s):  
Radical Anion ◽  
Design Strategy ◽  
Radical Anions

A design strategy for polymers that can be reduced by up to 4 electrons and have persistent radical anions.

scholarly journals Electron Paramagnetic Evidence for the ·pf3 Radical Anion

2000 ◽  
Vol 2000 (7) ◽  
pp. 342-343 ◽  
Author(s):  
Martyn C.R. Symons
Keyword(s):  
Radical Anion ◽  
Hyperfine Coupling ◽  
Coupling Constants ◽  
Radical Anions ◽  
Epr Spectrum ◽  
Hyperfine Coupling Constants ◽  
Spectroscopic Evidence ◽  
The Third ◽  
Electron Paramagnetic

Although ·PF2 radicals have been extensively studied there does not seem to be any spectroscopic evidence for ·PF3-radical anions. Here it is proposed that an EPR spectrum previously assigned to ·PF2 radicals is almost certainly due to ·PF3-centres. The 31P and 19F hyperfine coupling constants for these radicals are expected to be very similar. However, the ·PF3-radicals should show an extra coupling to the third 19F nucleus. This is clearly present.

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