ESR spectra of biradicals with weak exchange interaction

1966 ◽  
Vol 1 (2) ◽  
pp. 163-166 ◽  
Author(s):  
A. L. Buchachenko ◽  
V. A. Golubev ◽  
A. A. Medzhidov ◽  
E. G. Rozantsev
Keyword(s):  
Exchange Interaction ◽  
Esr Spectra ◽  
Weak Exchange ◽  
Weak Exchange Interaction

scholarly journals Synthesis and Characterisation of New Symmetrical Binucleating Ligands and Their Binuclear Copper(II) Complexes

2014 ◽  
Vol 2014 ◽  
pp. 1-9
Author(s):  
K. Jothivenkatachalam ◽  
S. Chandra Mohan
Keyword(s):  
Electron Transfer ◽  
Exchange Interaction ◽  
Variable Temperature ◽  
Esr Spectra ◽  
Single Step ◽  
Binuclear Copper ◽  
Magnetic Studies ◽  
Weak Exchange ◽  
Broad Signal ◽  
Binucleating Ligands

New symmetrical binucleating ligands N,N-bis[2-hydroxy-5-methyl-3-(4-methyl-piperazinomethyl)benzyl]-alkylamines L1 and L2 and their copper(II) complexes [Cu2L(X)2]·2H2O, where X = CH3COO−, C6H5COO−, Cl−, and ClO4-, were prepared and characterised. All the complexes undergo quasi-reversible reduction at negative potential (E = −0.48 to −1.02 V). The acetate and benzoate complexes undergo a two-step single electron transfer at –0.48 to –0.60 V and −0.9 to −1.02 V. The chloro and perchlorate complexes undergo a single step two-electron transfer at −0.55 to −0.75 V. Variable temperature magnetic studies show the presence of weak exchange interaction for acetate (−2 J around 25 to 40 cm−1) and benzoate (−2 J around 45 to 55 cm−1) bridged complexes and no exchange interaction is found for chloro and perchlorate complexes. ESR spectra of chloro and perchlorate complexes are like mononuclear copper(II) complexes with hyperfine splitting (A = 165 ± 5, g∥ = 2.17–2.23, and g⊥ = 2.05–2.10). The ESR spectra of acetate and benzoate complexes are like binuclear copper(II) complexes with broad signal (g = 2.2).

Counter-complementarity control of the weak exchange interaction in a bent {Ni(ii)3} complex with a μ-phenoxide-μ-carboxylate double bridge

2019 ◽  
Vol 43 (41) ◽  
pp. 16218-16225 ◽  
Author(s):  
Guillermo Fiorini ◽  
Luca Carrella ◽  
Eva Rentschler ◽  
Pablo Alborés
Keyword(s):  
Experimental Study ◽  
Exchange Interaction ◽  
Weak Exchange ◽  
Weak Exchange Interaction

We report a combined computational and experimental study of a weak exchange interaction in a bent {Ni(ii)3} complex controlled by counter-complementarity.

Observation of Nd ordering in a novel double perovskite Nd2MgRuO6 with weak exchange interaction at B-site

2018 ◽  
Vol 259 ◽  
pp. 73-78
Author(s):  
M.P. Sharannia ◽  
Paula Kayser ◽  
S. Savitha Pillai ◽  
Brendan J. Kennedy ◽  
Maxim Avdeev ◽  
...  
Keyword(s):  
Exchange Interaction ◽  
Double Perovskite ◽  
Weak Exchange ◽  
Weak Exchange Interaction

Weak Exchange Interaction Supported by a Biologically Relevant Long Chemical Bridge in a Cu−Peptide Model Compound

2006 ◽  
Vol 45 (7) ◽  
pp. 2942-2947 ◽  
Author(s):  
Ernanni D. Vieira ◽  
Nieves M. C. Casado ◽  
Gianella Facchin ◽  
Maria H. Torre ◽  
Antonio J. Costa-Filho ◽  
...  
Keyword(s):  
Exchange Interaction ◽  
Model Compound ◽  
Biologically Relevant ◽  
Weak Exchange ◽  
Weak Exchange Interaction

Resonance properties of domain walls in ferromagnets with a weak exchange interaction

1998 ◽  
Vol 24 (7) ◽  
pp. 479-483 ◽  
Author(s):  
M. V. Gvozdikova ◽  
A. S. Kovalev ◽  
Yuri S. Kivshar
Keyword(s):  
Exchange Interaction ◽  
Domain Walls ◽  
Weak Exchange ◽  
Resonance Properties ◽  
Weak Exchange Interaction

Weak exchange interaction incis-Cu(NH2CH2COO)2⋅H2) single crystal: EPR studies

1988 ◽  
Vol 37 (13) ◽  
pp. 7331-7336 ◽  
Author(s):  
S. K. Hoffmann ◽  
J. Goslar ◽  
L. S. Szczepaniak
Keyword(s):  
Single Crystal ◽  
Exchange Interaction ◽  
Weak Exchange ◽  
Weak Exchange Interaction
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