6533b7d2fe1ef96bd125edd1
RESEARCH PRODUCT
Coordination-Induced Spin-State Switching with Nickel Chlorin and Nickel Isobacteriochlorin
Vanessa ThomsChristian NätherRainer HergesChristian SchüttRakesh PuttreddyKari RissanenMarcel Dommaschksubject
inorganic chemicalsSpin stateschemistry.chemical_elementNanotechnologynickel chlorins010402 general chemistry01 natural sciencesInorganic ChemistryParamagnetismchemistry.chemical_compoundsquare-planar platformsPyridinepolycyclic compoundsotorhinolaryngologic diseasesPhysical and Theoretical ChemistrySpectroscopynickel porphyrinsta116010405 organic chemistryPorphyrinnickel isobacteriochlorins0104 chemical sciencesCrystallographyNickelchemistryOctahedronChlorindescription
We present the first coordination-induced spin-state switching with nickel chlorin and nickel isobacteriochlorin. The spin-state switching was monitored by UV-vis spectroscopy and NMR titration experiments. The association constants (K1 and K2) and thermodynamic parameters (ΔH and ΔS) of the coordination of pyridine were determined. The first X-ray analyses of a paramagnetic nickel chlorin and a nickel isobacteriochlorin provide further information about the structure of the octahedral complexes. Nickel chlorin and even more pronounced nickel isobacteriochlorin exhibit stronger coordination of axial ligands compared to the corresponding nickel porphyrin and thus provide the basis for more efficient spin-switching systems.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-09-24 | Inorganic Chemistry |