A Bioinspired Disulfide/Dithiol Redox Switch in a Rhenium Complex as Proton, H Atom, and Hydride Transfer Reagent.
A Bioinspired Disulfide/Dithiol Redox Switch in a Rhenium Complex as Proton, H Atom, and Hydride Transfer Reagent.
复制标题
铼配合物中的仿生二硫化物/二硫醇氧化还原开关作为质子、氢原子和氢化物转移试剂
DOI:
10.1021/jacs.1c01763
复制
发表时间:
2021
影响因子:
15
通讯作者:
I. Siewert
中科院分区:
文献类型:
--
作者:
S.-A. Hua;L. Paul;M. Oelschlegel;S. Dechert;F. Meyer;I. Siewert
The transfer of multiple electrons and protons is of crucial importance in many reactions relevant in biology and chemistry. Natural redox-active cofactors are capable of storing and releasing electrons and protons under relatively mild conditions and thus serve as blueprints for synthetic proton-coupled electron transfer (PCET) reagents. Inspired by the prominence of the 2e–/2H+disulfide/dithiol couple in biology, we investigate herein the diverse PCET reactivity of a Re complex equipped with a bipyridine ligand featuring a unique SH···–S moiety in the backbone. The disulfide bond infac-[Re(S–Sbpy)(CO)3Cl] (1,S–Sbpy = [1,2]dithiino[4,3-b:5,6-b′]dipyridine) undergoes two successive reductions at equal potentials of −1.16 V vs Fc+|0at room temperature forming [Re(S2bpy)(CO)3Cl]2–(12–,S2bpy = [2,2′-bipyridine]-3,3′-bis(thiolate)).12–has two adjacent thiolate functions at the bpy periphery, which can be protonated forming the S–H···–S unit,1H–. The disulfide/dithiol switch exhibits a rich PCET reactivity and can release a proton (ΔG°H+= 34 kcal mol–1, pKa= 24.7), an H atom (ΔG°H•= 59 kcal mol–1), or a hydride ion (ΔG°H–= 60 kcal mol–1) as demonstrated in the reactivity with various organic test substrates.
登录
查看更多内容
影响因子:
2.8
作者:
L. A. Paul;Nico C. Röttcher;J. Zimara;Jan;Jianfeng Du;D. Schwarzer;R. Mata;Inke Siewert
通讯作者:
Inke Siewert
影响因子:
15
作者:
M. Tilset;V. Parker
通讯作者:
M. Tilset;V. Parker
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
A. Vogler;I. Shenderovich
通讯作者:
I. Shenderovich
影响因子:
15
作者:
C. Tsay;Brooke N. Livesay;S. Ruelas;Jenny Y. Yang
通讯作者:
Jenny Y. Yang
DOI:
--
发表时间:
1991
期刊:
影响因子:
--
作者:
M. Bausch;C. Guadalupe;R. Gostowski
通讯作者:
R. Gostowski