Antiferromagnetic Transition in a Novel Star-shaped High-spin Fe(III) Tetranuclear Cluster from a Mononuclear Coordination Anion Featuring π-Extended Schiff Base Ligands.

Authors :: Kazuyuki Takahashi
Kiko Kawamukai
Tomoyuki Mochida
Takahiro Sakurai
Hitoshi Ohta
Takashi Yamamoto
Yasuaki Einaga
Hatsumi Mori
Yasuyuki Shimura
Toshiro Sakakibara
Takumi Fujisawa
Akira Yamaguchi
Akihiko Sumiyama
Source :: Chemistry Letters; 6/5/2015, Vol. 44 Issue 6, p840-842, 3p
Publication Year :: 2015
Abstract: A novel star-shaped high-spin Fe(III) tetranuclear cluster was unexpectedly obtained by the reaction of an [Fe<superscript>III</superscript>(phsal)<subscript>2</subscript>]<superscript>-</superscript> anion with an Fe(II) coordination cation (H<subscript>2</subscript>phsal: N-(2-hydroxyphenyl)salicylaldimine). Despite a star-shaped Fe(III) tetranuclear structure similar to reported Fe(III) single molecule magnets, the present compound exhibited a bulk antiferromagnetic transition at 0.6K due to a magnetic exchange coupling through intercluster π-stacking interactions. [ABSTRACT FROM AUTHOR]

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