Abstract：
:Strong hydrogen bonds such as F···H···F offer new strategies to fabricate molecular architectures exhibiting novel structures and properties. Along these lines and, to potentially realize hydrogen-bond mediated superexchange interactions in a frustrated material, we synthesized [H2F]2[Ni3F6(Fpy)12][SbF6]2 (Fpy = 3-fluoropyridine). It was found that positionally-disordered H2F+ ions link neutral NiF2(Fpy)4 moieties into a kagome lattice with perfect 3-fold rotational symmetry. Detailed magnetic investigations combined with density-functional theory (DFT) revealed weak antiferromagnetic interactions (J ~ 0.4 K) and a large positive-D of 8.3 K with ms = 0 lying below ms = ±1. The observed weak magnetic coupling is attributed to bond-disorder of the H2F+ ions which leads to disrupted Ni-F···H-F-H···F-Ni exchange pathways. Despite this result, we argue that networks such as this may be a way forward in designing tunable materials with varying degrees of frustration.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Manson JL,Brambleby J,Goddard PA,Spurgeon PM,Villa JA,Liu J,Ghannadzadeh S,Foronda F,Singleton J,Lancaster T,Clark SJ,Thomas IO,Xiao F,Williams RC,Pratt FL,Blundell SJ,Topping CV,Baines C,Campana C,Noll Bdoi
10.1038/s41598-018-23054-6subject
Has Abstractpub_date
2018-03-16 00:00:00pages
4745issue
1issn
2045-2322pii
10.1038/s41598-018-23054-6journal_volume
8pub_type
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