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

作者信息

Monakhov Kirill Yu, van Leusen Jan, Kögerler Paul, Zins Emilie-Laure, Alikhani M Esmaïl, Tromp Moniek, Danopoulos Andreas A, Braunstein Pierre

机构信息

Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany.

Jülich-Aachen Research Alliance (JARA-FIT), Peter Grünberg Institute (PGI-6), Forschungszentrum Jülich, 52425, Jülich, Germany.

出版信息

Chemistry. 2017 May 11;23(27):6504-6508. doi: 10.1002/chem.201700496. Epub 2017 Apr 19.

Transamination of [Co{N(SiMe ) } ] with C H (NHSiiPr ) gave the centrosymmetric trinuclear [{Co N(SiMe ) (μ-η-[o-C H (κNSiiPr ) ])} Co ] (1) (Co , Co =terminal, internal Co, respectively), with 3-coordinate Co , and Co "sandwiched" between the o-phenylenes of the two ligands; experimental and computational data support Co 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) ][{Co N(SiMe ) (μ-η-[o-C H (κNSiiPr ) ])} Co ] (4) with the anion isostructural to 1. The centrosymmetric Fe complex [{Fe N(SiMe ) (μ-η-[o-C H (κNSiiPr ) ])} Fe ] (5), analogous to 1, was also obtained.