The first spectroscopic model for the S1 state multiline signal of the OEC.
The first spectroscopic model for the S1 state multiline signal of the OEC.
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OEC S1 状态多线信号的第一个光谱模型。
DOI:
10.1016/j.bbabio.2003.12.001
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发表时间:
2004
期刊:
影响因子:
--
通讯作者:
Pecoraro,VincentL
中科院分区:
文献类型:
--
作者:
Hsieh,Wen-Yuan;Campbell,KristyA;Gregor,Wolfgang;DavidBritt,R;Yoder,DerekW;Penner-Hahn,JamesE;Pecoraro,VincentL
The parallel-mode electron paramagnetic resonance (EPR) spectrum of the S1state of the oxygen-evolving complex (OEC) shows a multiline signal centered around g=12, indicating an integer spin system. The series of [Mn2(2-OHsalpn)2] complexes were structurally characterized in four oxidation levels (MnII2, MnIIMnIII, MnIII2, and MnIIIMnIV). By using bulk electrolysis, the [MnIIIMnIV(2-OHsalpn)2(OH)] is oxidized to a species that contains MnIVoxidation state as detected by X-ray absorption near edge spectroscopy (XANES) and that can be formulated as MnIV4tetramer. The parallel-mode EPR spectrum of this multinuclear MnIV4complex shows 18 well-resolved hyperfine lines center around g=11 with an average hyperfine splitting of 36 G. This EPR spectrum is very similar to that found in the S1state of the OEC. This is the first synthetic manganese model complex that shows an S1-like multiline spectrum in parallel-mode EPR.
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影响因子:
--
作者:
Duboc;Hummel;Bill;Barra;Chouteau;Wieghardt
通讯作者:
Wieghardt
影响因子:
15
作者:
DEXHEIMER, SL;KLEIN, MP
通讯作者:
KLEIN, MP
影响因子:
15
作者:
Campbell, KA;Peloquin, JM;Britt, RD
通讯作者:
Britt, RD
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
C. Tommos;Xiao;K. Warncke;C. Hoganson;S. Styring;J. McCracken;B. Diner;G. Babcock
通讯作者:
G. Babcock
影响因子:
4.6
作者:
M. Zheng;G. Dismukes
通讯作者:
M. Zheng;G. Dismukes