Reduction of AgI1(NH3)2+ to Ag01(NH3)2 in Solution. Redox Potential and Spectral Study
Reduction of AgI1(NH3)2+ to Ag01(NH3)2 in Solution. Redox Potential and Spectral Study
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DOI：
10.1021/jp9535654
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发表时间：
1996-07
期刊：
影响因子：
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通讯作者：
I. Texier;S. Remita;P. Archirel;M. Mostafavi
中科院分区：
文献类型：
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作者：
I. Texier;S. Remita;P. Archirel;M. Mostafavi
脉冲辐射分解用于测定 AgI1(NH3)2+ 水溶液中水合电子衰变过程中形成的瞬态物质的吸收光谱。 AgO1(NH3)2的吸收光谱在345、385和435nm处呈现三个峰。 AgI1(NH3)2+/Ag01(NH3)2 电对的氧化还原电位的理论估计值是-2.4 VNHE。该值与 AgI1(NH3)2+ 不直接被 (CH3)2ĊO- 还原的事实一致，表明银单体对的氧化还原电位被氨配体降低。
Pulse radiolysis is used to determine the absorption spectra of the transient species formed during the decay of the hydrated electron in an aqueous solution of AgI1(NH3)2+. The absorption spectrum attributed to Ag01(NH3)2 presents three peaks at 345, 385, and 435 nm. A theoretical estimation of the redox potential of the couple AgI1(NH3)2+/Ag01(NH3)2 yields the value −2.4 VNHE. This value is consistent with the fact that AgI1(NH3)2+ is not directly reduced by (CH3)2ĊO- and shows that the redox potential of the silver monomer couple is lowered by ammonia ligands.