Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published January 16, 2013 | Accepted Version + Supplemental Material
Journal Article Open

Conversion of Fe−NH_2 to Fe−N_2 with release of NH_3

Abstract

Tris(phosphine)borane ligated Fe(I) centers featuring N_2H_4, NH_3, NH_2, and OH ligands are described. Conversion of Fe–NH_2 to Fe–NH_3^+ by the addition of acid, and subsequent reductive release of NH_3 to generate Fe–N_2, is demonstrated. This sequence models the final steps of proposed Fe–mediated 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.

Additional Information

© 2012 American Chemical Society. Received: August 3, 2012. Published: December 21, 2012. The authors declare no competing financial interest. This work was supported by the NIH (GM 070757) and the Gordon and Betty Moore Foundation, and through the NSF via a GRFP award to J.S.A. M.-E. M. acknowledges a Fellowship for Advanced Researchers from the Swiss National Science Foundation. Larry Henling and Dr. Jens Kaiser are thanked for their assistance with X-ray crystallography and Dr. Angelo DiBilio for his assistance with EPR measurements. We acknowledge the Gordon and Betty Moore Foundation, the Beckman Institute, and the Sanofi-Aventis BRP at Caltech for their generous support of the Molecular Observatory at Caltech. SSRL is operated for the DOE and supported by its Office of Biological and Environmental Research, and by the NIH, NIGMS (including P41GM103393), and the NCRR (P41RR001209).

Attached Files

Accepted Version - nihms433859.pdf

Supplemental Material - ja307714m_si_001.pdf

Supplemental Material - ja307714m_si_002.txt

Files

ja307714m_si_002.txt
Files (4.4 MB)
Name Size Download all
md5:1515ccec2f74209515c42b660ec61741
160.8 kB Preview Download
md5:83fbfb9f9790ba71232de9c8db9b07b2
2.1 MB Preview Download
md5:728a3225aa49b00f007c0a7847061f03
2.1 MB Preview Download

Additional details

Created:
August 19, 2023
Modified:
October 23, 2023