6533b86cfe1ef96bd12c7f01
RESEARCH PRODUCT
Coordination of expanded terpyridine ligands to cobalt
Vadim KsenofontovKatja HeinzeEva RentschlerChristoph FörsterKatharina MackLuca M. Carrellasubject
Ligand field theoryChemistryMagnetismLigandInorganic chemistrychemistry.chemical_elementRedoxInorganic ChemistryCrystallographychemistry.chemical_compoundMaterials ChemistryPhysical and Theoretical ChemistryTerpyridineCobaltTrifluoromethanesulfonateCoordination geometrydescription
Abstract The tridentate expanded terpyridine-like ligand N,N′-dimethyl-N,N′-dipyridin-2-yl-pyridin-2,6-diamine (ddpd) and [Co(H2O)6](BF4)2 give the high-spin complex mer-[Co(ddpd)2](BF4)2 with a tetragonally compressed CoN6 coordination geometry according to X-ray diffraction and SQUID measurements. UV–Vis–NIR spectra indicate a large ligand field splitting close to the high-spin/low-spin crossover point. Oxidation of the CoII complex to CoIII is achieved with silver triflate. The self exchange between high-spin CoII and low-spin CoIII is slow on the NMR time scale.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-03-01 | Polyhedron |