用于将氮转化为氨的双金属铁-锡催化剂及一种硅基重氮化物模型中间体。
Bimetallic iron-tin catalyst for N to NH and a silyldiazenido model intermediate.
作者信息
Dorantes Michael J, Moore James T, Bill Eckhard, Mienert Bernd, Lu Connie C
机构信息
Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455-0431, USA.
Max Planck Institut für Chemische Energiekonversion, Stiftstraße 34-36, 45470 Mülheim an der Ruhr, Germany.
出版信息
Chem Commun (Camb). 2020 Sep 22;56(75):11030-11033. doi: 10.1039/d0cc04563b.
A tin-supported iron catalyst produces 5.9 turnovers of NH3 from N2, using [Ph2NH2]OTf as the acid and CoCp2* as the reductant. Two redox states of the Fe(N2) adduct and an Fe silyldiazenido complex were characterized using X-ray crystallography along with NMR and Mössbauer spectroscopies. Density functional theory calculations reveal that the charge on the Sn center correlates strongly with both the polarization of the N2 moiety and the charge on the distal N atom.
一种锡负载的铁催化剂以[Ph2NH2]OTf为酸、CoCp2*为还原剂，能从N2产生5.9个氨转化数。利用X射线晶体学以及核磁共振和穆斯堡尔光谱对Fe(N2)加合物和一种铁硅基二氮烯配合物的两种氧化还原态进行了表征。密度泛函理论计算表明，Sn中心的电荷与N2部分的极化以及远端N原子上的电荷都密切相关。
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