| [OsⅣ（N）（NH3）4]（CF3SO3）3电化学还原过程的原位FTIR光 … |
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| 引用本文： | 陈声培 孙世刚. [OsⅣ（N）（NH3）4]（CF3SO3）3电化学还原过程的原位FTIR光 …[J]. 光谱学与光谱分析, 2000, 20(5): 630-631 |
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| 作者姓名： | 陈声培 孙世刚 |
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| 作者单位： | [1]厦门大学化学系,固体表面物理化学国家重点实验室,物化所 [2]厦门大学化学系,固体表面物理化学国家重点实验室,物 |
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| 基金项目： | 香港理工大学校科研和教改项目，， |
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| 摘 要： | 运用原位ＦＴＩＲＳ，ＵＶ／Ｖｉｓ和电化学方法研究了乙腈溶液中「ＯｓⅣ（Ｎ）（ＮＨ３）４」（ＣＦ３ＳＯ３）３在ＧＣ和Ｐｔ电极上的还原过程。结果首次在Ｐｔ电极上检测到桥氮物种υ（Ｎ≡Ｎ）的红外谱峰，位于２０１９和１９７０ｃｍ＾－１附近，分别指认为「Ⅲ，Ⅱ」和「Ⅱ，Ⅱ」混合价桥氮俄络合物。为进一步探讨桥氮偶联过程提供了新的谱学数据。
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| 关 键 词： | 原位FTIRS 电化学诱导桥氮偶联 锇 氮化物 |
In situ FTIRS studies of reduction of [OsVI(N)(NH3)4](CF3SO3)3 in acetonitrile] |
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| Shengpei CHEN,Kwokyin HUANG,Shigang SUN. In situ FTIRS studies of reduction of [OsVI(N)(NH3)4](CF3SO3)3 in acetonitrile][J]. Spectroscopy and Spectral Analysis, 2000, 20(5): 630-631 |
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| Authors: | Shengpei CHEN Kwokyin HUANG Shigang SUN |
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| Affiliation: | State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Institute of Physical Chemistry, Xiamen University, 361005 Xiamen. |
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| Abstract: | In this paper, the electrochemical cyclic voltammetry, UV/Vis and in situ FTIR spectroscopy were used to study the electrochemical reduction of [OsVI(N)(NH3)4](CF3SO3)3 on GC and Pt electrode in acetonitrile. The results demonstrated that the N-N coupling can occur between [OsVI(N)(NH3)4]3+ and the osmium(V) species generated at the electrode. It has revealed for the first time, by in situ FTIR spectroscopy, that the IR absorption of the nu (N identical to N) mode of the mu-dinitrogen osmium[III, II] and [II, II] complex yields positive-going band at around 2,019 cm-1 and negative-going band near 1,970 cm-1, respectively. The results provided new insights in understanding the mechanism of the coupling reaction [OsV identical to N][OsVI identical to N]<=>[OsII-N identical to N-OsIII]. |
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