Synthesis, structure and electrochemical properties of the organonickel complex [NiBr(Mes)(phen)] (Mes聽=聽2,4,6-trimethylphenyl, phen聽=聽1,10-phenanthroline)

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• 作者：Dmitry G. Yakhvarov ; Andreas Petr ; Vladislav Kataev ; Bernd B眉chner ; Santiago G贸mez-Ruiz ; Evamarie Hey-Hawkins ; Svetlana V. Kvashennikova ; Yulia S. Ganushevich ; Vladimir I. Morozov ; Oleg G. Sinyashin
• 关键词：Organonickel 蟽-complexes ; 1 ; 10-Phenanthroline ; Electrochemistry ; In situ EPR spectroelectrochemistry ; Electroreduction ; Ligand dissociation
• 刊名：Journal of Organometallic Chemistry
• 出版年：15 January, 2014
• 年：2014
• 卷：750
• 期：Complete
• 页码：59-64
• 全文大小：626 K

文摘

The organonickel complex [NiBr(Mes)(phen)] (1) (Mes聽=聽2,4,6-trimethylphenyl, phen聽=聽1,10-phenanthroline) was synthesized by oxidative addition of MesBr to nickel(0) complexes, obtained from [Ni(COD)₂] (COD聽=聽1,5-cyclooctadiene) and phen, or electrochemically generated from [NiBr₂(phen)], and by ligand exchange reaction from [NiBr(Mes)(PPh₃)₂]. The electrochemical properties of [NiBr(Mes)(phen)] were investigated by cyclic voltammetry and in situ EPR spectroelectrochemistry. The cathodic reduction of 1 resulted in formation of the neutral radical complex [Ni(Mes)(phen^{鈭?/sup>)] with a 1,10-phenanthroline radical anion bound to a nickel(II) centre. The electrochemical generation of the free 1,10-phenanthroline radical anion from 1,10-phenanthroline is also described.}