- Abstract:
-
A tetragonal polymorph of [Ni(HF(2))(pyz)(2)]PF(6) (designated β) is isomorphic to its SbF(6)-congener at 295 K and features linear Ni-FHF-Ni pillars. Enhancements in the spin exchange (J(FHF) = 7.7 K), Néel temperature (T(N) = 7 K), and critical field (B(c) = 24 T) were found relative to monoclinic α-PF(6). DFT reveals that the HF(2)(-) bridges are significantly better mediators of magnetic exchange than pyz (J(pyz)), where J(FHF) ≈ 3J(pyz), thus leading to quasi-1D behavior. Spin density re...
Expand abstract - Publication status:
- Published
- Publisher copy:
- 10.1039/c2dt30113j
-
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- Journal:
- Dalton transactions (Cambridge, England : 2003)
- Volume:
- 41
- Issue:
- 24
- Pages:
- 7235-7243
- Publication date:
- 2012-06-05
- DOI:
- EISSN:
-
1477-9234
- ISSN:
-
1477-9226
- URN:
-
uuid:a4e46b16-696e-44ed-9ac6-1095e5c2f11f
- Source identifiers:
-
328981
- Local pid:
- pubs:328981
- Language:
- English
- Copyright date:
- 2012
Journal article
Influence of HF2- geometry on magnetic interactions elucidated from polymorphs of the metal-organic framework [Ni(HF2)(pyz)2]PF6 (pyz = pyrazine).
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