C spin state cascade driven by antagonistic solid state interactions †
نویسندگان
چکیده
A four-stepped cascade of Fe(II) high spin (HS) to low spin (LS) states is demonstrated in a family of 2-D Hofmann materials, [Fe3 (saltrz)6(M (CN)4)3]$8(H2O) (M II 1⁄4 Pd (1), Pt (1); saltrz 1⁄4 (E)-2-(((4H-1,2,4triazol-4-yl)imino)methyl)phenol). Alongside the fully HS and LS Fe(II) states, fractional spin state stabilization occurs at HS/LS values of 5/6, 2/3, and 1/6. This unconventional spin state periodicity is driven by the presence of multiple spin crossover (SCO) active Fe(II) sites which are in subtly distinct environments driven by a network of antagonistic host–host and host–guest interactions. Alternating longand short-range magnetostructural ordering is achieved over the five distinct spin state ratios HSLS, HSLS, HSLS, HSLS, and HSLS owing to the flexibility of this 2-D interdigitated lattice topology interconnected by intermolecular interactions. A distinct wave-like spin state patterning is structurally evidenced for each intermediate phase.
منابع مشابه
Four-step iron(ii) spin state cascade driven by antagonistic solid state interactions† †Electronic supplementary information (ESI) available: Characterisation of materials. CCDC 1038403–1038407. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c6sc03114e Click here for additional data file. Click here for additional data file.
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تاریخ انتشار 2016