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Published December 9, 2013 | Accepted Version + Supplemental Material
Journal Article Open

Trinuclear Nickel Complexes with Metal–Arene Interactions Supported by Tris- and Bis(phosphinoaryl)benzene Frameworks

Abstract

Triphosphine and diphosphine ligands with backbones designed to facilitate metal–arene interactions were employed to support multinuclear Ni complexes. Di- and trinuclear metal complexes supported by a triphosphine containing a triarylbenzene linker display diverse metal–arene binding modes. Multinuclear Ni halide complexes were isolated with strongly interacting metal centers bound to opposite faces of the coordinated arene. Upon reaction of the trinickel diiodide complex 2 with disodium tetracarbonylferrate, a cofacial triangulo nickel(0) complex, 4, was isolated. The Ni^(0)_(3) cluster motif can also be supported by a para-terphenyl diphosphine, where a terminal carbon monoxide ligand replaces the third phosphine donor. All multinuclear complexes feature strong metal–arene interactions, demonstrating the use of an arene as a versatile ligand design element for small clusters.

Additional Information

© 2013 American Chemical Society. Received: October 5, 2013; Published: November 4, 2013. We are grateful to Caltech, the NSF CAREER CHE-1151918, and the Dow Chemical Company Graduate Student Fellowship (S.S.) for funding. We thank Dr. Mike Takase, Lawrence M. Henling, and Emily Y. Tsui for crystallographic assistance, and Madalyn R. Radlauer for NMR spectroscopy assistance. The Bruker KAPPA APEXII X-ray diffractometer was purchased via an NSF CRIF:MU award to Caltech, CHE-063-9094. The 500 MHz NMR spectrometer was purchased via an NIH award, RR027690.

Attached Files

Accepted Version - nihms-537987.pdf

Supplemental Material - om400976x_si_001.pdf

Supplemental Material - om400976x_si_002.zip

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Additional details

Created:
August 19, 2023
Modified:
October 25, 2023