alkali metal cations
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Author(s):  
Michael McEldrew ◽  
Zachary A. H. Goodwin ◽  
Nicola Molinari ◽  
Boris Kozinsky ◽  
Alexei A. Kornyshev ◽  
...  

2021 ◽  
Author(s):  
Liam Grunwald ◽  
Martin Clémancey ◽  
Daniel Klose ◽  
Lionel Dubois ◽  
Serge Gambarelli ◽  
...  

Synthetic iron-sulfur cubanes are essential models for biological cofactors in the more complex enzymatic environments. However, a complete series of [Fe4S4]n complexes spanning all biorelevant oxidation states (n = 0-3+) has never been prepared. Here, we demonstrate that the use of a bulky arylthiolate ligand promoting the encapsulation of alkali-metal cations in the vicinity of the cubane enables the synthesis of such a series. Characterization by EPR, 57Fe Mössbauer spectroscopy, UV-Vis electronic absorption and variable-temperature X-ray diffraction analysis reveals key trends for the Fe4S4 core’s geometry as well as for the Mössbauer isomer shift, which both correlate systematically with oxidation state. Furthermore, we confirm the S=4 electronic ground state of the most reduced member, [Fe4S4]0, in agreement with that proposed for the all-ferrous cubanes in Nature.


2021 ◽  
Author(s):  
Liam Grunwald ◽  
Martin Clémancey ◽  
Daniel Klose ◽  
Lionel Dubois ◽  
Serge Gambarelli ◽  
...  

Synthetic iron-sulfur cubanes are essential models for biological cofactors in the more complex enzymatic environments. However, a complete series of [Fe4S4]n complexes spanning all biorelevant oxidation states (n = 0-3+) has never been prepared. Here, we demonstrate that the use of a bulky arylthiolate ligand promoting the encapsulation of alkali-metal cations in the vicinity of the cubane enables the synthesis of such a series. Characterization by EPR, 57Fe Mössbauer spectroscopy, UV-Vis electronic absorption and variable-temperature X-ray diffraction analysis reveals key trends for the Fe4S4 core’s geometry as well as for the Mössbauer isomer shift, which both correlate systematically with oxidation state. Furthermore, we confirm the S=4 electronic ground state of the most reduced member, [Fe4S4]0, in agreement with that proposed for the all-ferrous cubanes in Nature.


2021 ◽  
Author(s):  
Hong Chul Lim ◽  
Min-Cheol Kim ◽  
Ayoung Kim ◽  
Eunji Park ◽  
Yunjae Park ◽  
...  

2021 ◽  
pp. 134257
Author(s):  
Li Wang ◽  
Jiaqi Liu ◽  
Caihong Lin ◽  
Hua Shang ◽  
Jiangfeng Yang ◽  
...  

2021 ◽  
Vol 509 ◽  
pp. 230364
Author(s):  
Xiaojiang Hou ◽  
Lu Yang ◽  
Kaiming Hou ◽  
Qiang Shu ◽  
Qianhong Cao ◽  
...  

2021 ◽  
Vol 288 ◽  
pp. 119981
Author(s):  
Julie Anne D. del Rosario ◽  
Guangfu Li ◽  
Marc Francis M. Labata ◽  
Joey D. Ocon ◽  
Po-Ya Abel Chuang

Author(s):  
Sajjad Ghojavand ◽  
Edwin B. Clatworthy ◽  
Aurélie Vicente ◽  
Eddy Dib ◽  
Valérie Ruaux ◽  
...  

Nature Energy ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 439-448 ◽  
Author(s):  
B. Endrődi ◽  
A. Samu ◽  
E. Kecsenovity ◽  
T. Halmágyi ◽  
D. Sebők ◽  
...  

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