Conversion of Fe鈥揘H2 to Fe鈥揘2 with release of NH3

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• 作者：John S. Anderson ; Marc-Etienne Moret ; Jonas C. Peters
• 刊名：The Journal of the American Chemical Society
• 出版年：2013
• 出版时间：January 16, 2013
• 年：2013
• 卷：135
• 期：2
• 页码：534-537
• 全文大小：259K
• 年卷期：v.135,no.2(January 16, 2013)
• ISSN：1520-5126

文摘

Tris(phosphine)borane ligated Fe(I) centers featuring N₂H₄, NH₃, NH₂, and OH ligands are described. Conversion of Fe鈥揘H₂ to Fe鈥揘H₃⁺ by the addition of acid, and subsequent reductive release of NH₃ to generate Fe鈥揘₂, is demonstrated. This sequence models the final steps of proposed Fe鈥搈ediated nitrogen fixation pathways. The five-coordinate trigonal bipyramidal complexes described are unusual in that they adopt S = 3/2 ground states and are prepared from a four-coordinate, S = 3/2 trigonal pyramidal precursor.