Imperial College London

DrAndyAshley

Faculty of Natural SciencesDepartment of Chemistry

Honorary Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 5810a.ashley Website

 
 
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Location

 

601LMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Piascik:2018:10.1021/jacs.8b06999,
author = {Piascik, AD and Li, R and Wilkinson, HJ and Green, JC and Ashley, AE},
doi = {10.1021/jacs.8b06999},
journal = {Journal of the American Chemical Society},
pages = {10691--10694},
title = {Fe-catalyzed conversion of N2 to N(SiMe3)3 via an fe-hydrazido resting state},
url = {http://dx.doi.org/10.1021/jacs.8b06999},
volume = {140},
year = {2018}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - The catalytic conversion of N2 to N(SiMe3)3 by homogeneous transition metal compounds is a rapidly developing field, yet few mechanistic details have been experimentally elucidated for 3 d element catalysts. Herein we show that Fe(PP)2(N2) (PP = R2PCH2CH2PR2; R = Me, 1Me; R = Et, 1Et) are highly effective for the catalytic production of N(SiMe3)3 from N2 (using KC8/Me3SiCl), with the yields being the highest reported to date for Fe-based catalysts. We propose that N2 fixation proceeds via electrophilic Nβ silylation and 1e- reduction to form unstable FeI(NN-SiMe3) intermediates, which disproportionate to 1Me/Et and hydrazido FeII[N-N(SiMe3)2] species (3Me/Et); the latter act as resting states on the catalytic cycle. Subsequent 2e- reduction of 3Me/Et leads to N-N scission and formation of [N(SiMe3)2]- and putative anionic Fe imido products. These mechanistic results are supported by both experiment and DFT calculations.
AU - Piascik,AD
AU - Li,R
AU - Wilkinson,HJ
AU - Green,JC
AU - Ashley,AE
DO - 10.1021/jacs.8b06999
EP - 10694
PY - 2018///
SN - 1520-5126
SP - 10691
TI - Fe-catalyzed conversion of N2 to N(SiMe3)3 via an fe-hydrazido resting state
T2 - Journal of the American Chemical Society
UR - http://dx.doi.org/10.1021/jacs.8b06999
UR - https://www.ncbi.nlm.nih.gov/pubmed/30114921
UR - https://pubs.acs.org/doi/10.1021/jacs.8b06999
UR - http://hdl.handle.net/10044/1/62355
VL - 140
ER -