6533b85dfe1ef96bd12bf28a
RESEARCH PRODUCT
Hexakis-adducts of [60]fullerene as molecular scaffolds of polynuclear spin-crossover molecules
Nazario MartínNazario MartínMario Palacios-corellaJoaquín CalboBeatriz M. IllescasMiguel Clemente-leónEugenio CoronadoEnrique OrtíJavier Ramos-sorianoManuel SoutoManuel SoutoDuarte Ananiassubject
Materials scienceFullerene010405 organic chemistryLigandQuímicaGeneral Chemistry010402 general chemistry01 natural sciencesFluorescence spectroscopy3. Good health0104 chemical sciencesAdductChemistrychemistry.chemical_compoundCrystallographysymbols.namesakechemistrySpin crossoverPyridinesymbolsMoleculeRaman spectroscopyMaterialsdescription
A family of hexakis-substituted [60]fullerene adducts endowed with the well-known tridentate 2,6-bis(pyrazol-1-yl)pyridine (bpp) ligand for spin-crossover (SCO) systems has been designed and synthesized. It has been experimentally and theoretically demonstrated that these molecular scaffolds are able to form polynuclear SCO complexes in solution. UV-vis and fluorescence spectroscopy studies have allowed monitoring of the formation of up to six Fe(ii)–bpp SCO complexes. In addition, DFT calculations have been performed to model the different complexation environments and simulate their electronic properties. The complexes retain SCO properties in the solid state exhibiting both thermal- and photoinduced spin transitions, as confirmed by temperature-dependent magnetic susceptibility and Raman spectroscopy measurements. The synthesis of these complexes demonstrates that [60]fullerene hexakis-adducts are excellent and versatile platforms to develop polynuclear SCO systems in which a fullerene core is surrounded by a SCO molecular shell.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-06-24 | Chemical Science |