Spin transitions in Fe(II) metallogrids modulated by substituents, counteranions, and solvents.
J Am Chem Soc
; 135(16): 5942-5, 2013 Apr 24.
Article
en En
| MEDLINE
| ID: mdl-23547560
ABSTRACT
Two bis(tridentate) Schiff base ligands H2L(x) were used to construct three 2×2 grid-type tetranuclear Fe(II) complexes 1-3 to obtain polynuclear spin-crossover materials. Magnetic susceptibility measurements show that the spin states of the complexes are related to the substituents of H2L(x), and that spin transition occurs only in complexes 1 and 2, which are derived from a bulky ligand, whereas complex 3 is diamagnetic. The transition temperatures of complexes 1 and 2 are close to room temperature and are dependent on counteranions. The spin transition of complex 1 can be reversibly tuned by the dehydration and hydration process.
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Colección:
01-internacional
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MEDLINE
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En
Revista:
J Am Chem Soc
Año:
2013
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Article