scholarly journals Phendione-Transition Metal Complexes with Bipolar Redox for Lithium Batteries

2020 ◽  
Author(s):  
Alae Eddine Lakraychi ◽  
Simon De Kreijger ◽  
Deepak Gupta ◽  
Benjamin Elias ◽  
Alexandru Vlad
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Lithium Batteries ◽  
Electrode Materials ◽  
Active Species ◽  
Charge Storage ◽  
Carbonyl Groups ◽  
Solid Electrode ◽  
Reversible Redox

<i>1,10-Phenanthroline-5,6-dione (Phendione) - based transition metal complexes are known for their use in pharmacological and catalysis applications. However, their application in electrochemical energy storage has not been investigated thus far. Herein we prove the feasibility of employing phendione - transition metal complexes for electrochemical charge storage by taking advantage of the reversible redox of both, carbonyl groups and transition metal center, contributing thus to augmented charge storage. Interestingly, the chemistry of the counter ion in the studied complexes effectively tunes the solubility and improves the cycling stability. Whereas further studies are required to limit the solubility and active species shuttle, this study explores the bottlenecks of phendione - transition metal complexes as electrode materials for solid electrode format batteries. </i>

scholarly journals Phendione-Transition Metal Complexes with Bipolar Redox for Lithium Batteries

2020 ◽  
Author(s):  
Alae Eddine Lakraychi ◽  
Simon De Kreijger ◽  
Deepak Gupta ◽  
Benjamin Elias ◽  
Alexandru Vlad
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Lithium Batteries ◽  
Electrode Materials ◽  
Active Species ◽  
Charge Storage ◽  
Carbonyl Groups ◽  
Solid Electrode ◽  
Reversible Redox

<i>1,10-Phenanthroline-5,6-dione (Phendione) - based transition metal complexes are known for their use in pharmacological and catalysis applications. However, their application in electrochemical energy storage has not been investigated thus far. Herein we prove the feasibility of employing phendione - transition metal complexes for electrochemical charge storage by taking advantage of the reversible redox of both, carbonyl groups and transition metal center, contributing thus to augmented charge storage. Interestingly, the chemistry of the counter ion in the studied complexes effectively tunes the solubility and improves the cycling stability. Whereas further studies are required to limit the solubility and active species shuttle, this study explores the bottlenecks of phendione - transition metal complexes as electrode materials for solid electrode format batteries. </i>

Reversible Redox, Spin Crossover, and Superexchange Coupling in 3d Transition-Metal Complexes of Bis -azinyl Analogues of 2,2′:6′,2′′-Terpyridine

2018 ◽  
Vol 2018 (10) ◽  
pp. 1212-1223 ◽  
Author(s):  
Yixin Zhang ◽  
Katie L. M. Harriman ◽  
Gabriel Brunet ◽  
Amélie Pialat ◽  
Bulat Gabidullin ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Spin Crossover ◽  
Reversible Redox ◽  
Superexchange Coupling

Transition metal complexes of diethyl Cyclopentanone-2,5-diglyoxylate

1969 ◽  
Vol 22 (3) ◽  
pp. 505 ◽  
Author(s):  
DP Graddon ◽  
IT Townsend
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Infrared Spectra ◽  
Near Infrared ◽  
Carbonyl Groups ◽  
Heterocyclic Base ◽  
Spin Configuration ◽  
Molecular Weights ◽  
Near Infrared Spectra

Diethyl cyclopentanone-2,5-diglyoxylate (ecgH2; IV) forms complexes of the type M(ecg)Bn with divalent transition metals, where M = Mn, Fe, Co, Ni, Cu, Zn; B = H2O or a heterocyclic base, and n = 1 (when M = Cu) or n = 2 (M = others). All complexes have the high-spin configuration. Infrared spectra show the presence of chelate β-diketone rings and free carbonyl groups. Visible and near-infrared spectra support octahedral stereochemistry for the nickel(II) and cobalt(II) complexes. Molecular weights show the complexes to be dimeric. These results are consistent with an oxygen-bridged structure, M2L2B2n, in which base molecules are added above and below a planar M2L2 unit (VI).

Transition Metal Complexes of a Diaza-Crown Ether with two Carbamoylmethyl Substituents: Synthesis and Assessment as a Functional Nuclease

2017 ◽  
Vol 42 (2) ◽  
pp. 136-144
Author(s):  
Jia-qing Xie ◽  
Shu-lan Cai ◽  
Fa-mei Feng
Keyword(s):  
Transition Metal ◽  
Crown Ether ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Dna Cleavage ◽  
Catalytic Mechanism ◽  
Active Species ◽  
Lewis Acidity ◽  
Hydrolytic Cleavage ◽  
Central Metal

We report the synthesis, catalytic function and catalytic mechanism of two transition metal complexes (CuL, ZnL) of a diaza-crown ether with two acetylamino side arms [L = 2,2′-(1,4,10,13-tetraoxa-7,16-diazacyclooctadecane-7,16-diyl)diacetamide] in the hydrolysis of DNA. Their nuclease functions on pUC19 DNA cleavage were investigated. The results indicated that the active species might be formed by the deprotonation of the water-coordinated molecules in the complex and the optimum pH is 8.0 for both CuL and ZnL. The catalytic activity of CuL is higher than that of ZnL in DNA hydrolytic cleavage due to the difference in the Lewis acidity of the central metal ions, which is contrary to the result with the Cu and Zn complexes of the parent ligand L0 (1,4,10,13-tetraoxa-7,16-diazacyclooctadecane) as artificial nuclease. Comparison studies of DNA cleavage in the presence and absence of several oxygen scavengers showed that these complexes can promote DNA cleavage by a hydrolytic pathway. Our proposed mechanism suggests that the negative charge on the phosphorus oxygen atom of the substrate molecule is dispersed and the intermediate is formed and stabilised by hydrogen bonding between the DNA molecule and the acetylamino group of the complex.

Phendione–Transition‐Metal Complexes with Bipolar Redox Activity for Lithium Batteries

ChemSusChem ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2225-2231 ◽  
Author(s):  
Alae Eddine Lakraychi ◽  
Simon De Kreijger ◽  
Deepak Gupta ◽  
Benjamin Elias ◽  
Alexandru Vlad
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Lithium Batteries ◽  
Redox Activity

Electronic interaction of ligands with carbonyl groups in transition-metal complexes of the types LMn(CO)5 and LMo(CO)5

1980 ◽  
Vol 19 (8) ◽  
pp. 2201-2205 ◽  
Author(s):  
Steven C. Avanzino ◽  
Hsiang-Wen Chen ◽  
Craig J. Donahue ◽  
William L. Jolly
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Electronic Interaction ◽  
Carbonyl Groups
Sign in / Sign up

Export Citation Format

Share Document