| Autor: |
Sciortino NF; School of Chemistry , The University of Sydney , NSW 2006 , Australia . Email: suzanne.neville@sydney.edu.au ; Tel: +61-2-9351-7791., Zenere KA; School of Chemistry , The University of Sydney , NSW 2006 , Australia . Email: suzanne.neville@sydney.edu.au ; Tel: +61-2-9351-7791., Corrigan ME; School of Chemistry , The University of Sydney , NSW 2006 , Australia . Email: suzanne.neville@sydney.edu.au ; Tel: +61-2-9351-7791., Halder GJ; X-ray Science Division , Advanced Photon Source , Argonne National Laboratory , IL 60439 , USA., Chastanet G; CNRS , Univ. Bordeaux , ICMCB , UPR 9048 , F-33600 , Pessac , France., Létard JF; CNRS , Univ. Bordeaux , ICMCB , UPR 9048 , F-33600 , Pessac , France., Kepert CJ; School of Chemistry , The University of Sydney , NSW 2006 , Australia . Email: suzanne.neville@sydney.edu.au ; Tel: +61-2-9351-7791., Neville SM; School of Chemistry , The University of Sydney , NSW 2006 , Australia . Email: suzanne.neville@sydney.edu.au ; Tel: +61-2-9351-7791. |
| Abstrakt: |
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, [Fe 3 II (saltrz) 6 (M II (CN) 4 ) 3 ]·8(H 2 O) (M II = Pd ( 1 Pd ), Pt ( 1 Pt ); saltrz = ( E )-2-(((4 H -1,2,4-triazol-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 long- and short-range magnetostructural ordering is achieved over the five distinct spin state ratios HS 1.0 LS 0.0 , HS 0.833 LS 0.167 , HS 0.667 LS 0.333 , HS 0.167 LS 0.833 , and HS 0.0 LS 1.0 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. |
