Selectivity of tungsten mediated dinitrogen splitting vs. proton reduction

Schluschaß B, Abbenseth J, Demeshko S, Finger M, Franke A, Herwig C, Würtele C, Ivanovic-Burmazovic I, Limberg C, Telser J, Schneider S (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Chemical Science Royal Society of Chemistry

Book Volume: 10

Pages Range: 10275-10282

Journal Issue: 44

DOI: 10.1039/c9sc03779a

Abstract

Mo complexes are currently the most active catalysts for nitrogen fixation under ambient conditions. In comparison, tungsten platforms are scarcely examined. For active catalysts, the control of N2vs. proton reduction selectivities remains a difficult task. We here present N2 splitting using a tungsten pincer platform, which has been proposed as the key reaction for catalytic nitrogen fixation. Starting from [WCl3(PNP)] (PNP = N(CH2CH2PtBu2)2), the activation of N2 enabled the isolation of the dinitrogen bridged redox series [(N2){WCl(PNP)}2]0/+/2+. Protonation of the neutral complex results either in the formation of a nitride [W(N)Cl(HPNP)]+ or H2 evolution and oxidation of the W2N2 core, respectively, depending on the acid and reaction conditions. Examination of the nitrogen splitting vs. proton reduction selectivity emphasizes the role of hydrogen bonding of the conjugate base with the protonated intermediates and provides guidelines for nitrogen fixation.

Authors with CRIS profile

Alicja Franke Lehrstuhl für Bioanorganische Chemie Ivana Ivanovic-Burmazovic Lehrstuhl für Bioanorganische Chemie

Involved external institutions

Georg-August-Universität Göttingen DE Germany (DE) Roosevelt University US United States (USA) (US) Humboldt-Universität zu Berlin DE Germany (DE)

How to cite

APA:

Schluschaß, B., Abbenseth, J., Demeshko, S., Finger, M., Franke, A., Herwig, C.,... Schneider, S. (2019). Selectivity of tungsten mediated dinitrogen splitting vs. proton reduction. Chemical Science, 10(44), 10275-10282. https://doi.org/10.1039/c9sc03779a

MLA:

Schluschaß, Bastian, et al. "Selectivity of tungsten mediated dinitrogen splitting vs. proton reduction." Chemical Science 10.44 (2019): 10275-10282.

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