Testing the Push-Pull Hypothesis: Lewis Acid Augmented N(2) Activation at Iron.
Testing the Push-Pull Hypothesis: Lewis Acid Augmented N(2) Activation at Iron.
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DOI:
10.1021/jacs.7b01982
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发表时间:
2017-04-26
影响因子:
15
通讯作者:
Szymczak NK
中科院分区:
文献类型:
--
作者:
Geri JB;Shanahan JP;Szymczak NK
We present a systematic investigation of the structural and electronic changes that occur in an Fe(0)–N2 unit (Fe(depe)2(N2); depe = 1,2-bis(diethylphosphino)-ethane) upon the addition of exogenous Lewis acids. Addition of neutral boranes, alkali metal cations, and an Fe2+ complex increases the N–N bond activation (Δ νNN up to 172 cm−1), decreases the Fe(0)–N2 redox potential, polarizes the N–N bond, and enables −N protonation at uncommonly anodic potentials. These effects were rationalized using combined experimental and theoretical studies.
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