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Linear, Trinuclear Cobalt Complexes with o -Phenylene-bis-Silylamido Ligands

DOI: 10.1002/chem.201700496 DOI Help

Authors: Kirill Yu. Monakhov (Aachen University) , Jan Van Leusen (Aachen University) , Paul Kogerler (Aachen University; Peter Grünberg Institute (PGI-6)) , Emilie-laure Zins (Université Pierre et Marie Curie) , M. Esmail Alikhani (Université Pierre et Marie Curie) , Moniek Tromp (University of Amsterdam) , Andreas A. Danopoulos (Université de Strasbourg) , Pierre Braunstein (Université de Strasbourg)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Chemistry - A European Journal , VOL 23 , PAGES 6504 - 6508

State: Published (Approved)
Published: May 2017
Diamond Proposal Number(s): 8071

Abstract: Transamination of [Co{N(SiMe3)2}2]2 with C6H4(NHSiiPr3)2 gave the centrosymmetric trinuclear [{CoterN(SiMe3)2(μ-η-[o-C6H4(κNSiiPr3)2])}2Coint] (1) (Coter, Coint=terminal, internal Co, respectively), with 3-coordinate Coter, and Coint “sandwiched” between the o-phenylenes of the two ligands; experimental and computational data support CoII centres and ditopic o-amido-imino-cyclohexen-allyl ligands; magnetic studies reveal intermetallic ferromagnetic interactions and single-molecule magnet (SMM) character. One-electron reduction of 1 yielded the salt [K(18-crown-6)(THF)2][{CoterN(SiMe3)2(μ-η-[o-C6H4(κNSiiPr3)2])}2Coint] (4) with the anion isostructural to 1. The centrosymmetric Fe complex [{FeterN(SiMe3)2(μ-η-[o-C6H4(κNSiiPr3)2])}2Feint] (5), analogous to 1, was also obtained.

Journal Keywords: bridging ligands; cobalt; iron; magnetochemistry; o-phenylene; transamination

Subject Areas: Chemistry

Instruments: B18-Core EXAFS

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