Nakabayashi Koji, Ohkoshi Shin-ichi
Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Toyko 113-0033, Japan.
Inorg Chem. 2009 Sep 21;48(18):8647-9. doi: 10.1021/ic900625a.
We prepared a three-dimensional monometallic lanthanoid assembly, Na(5)[Ho(THB(4-))(2)].7H(2)O (THB = 1,2,4,5-tetrahydroxybenzene), that exhibits ferromagnetism with a Curie temperature of 11 K. Such a ferromagnetic ordering is due to the effective mediation of the magnetic interaction between Ho(3+) ions by the THB(4-) ligand.