Hydrothermal synthesis and structure of a three-dimensional cobalt(II) triazolate magnet.
The reaction of CoCl2.6H2O, 1,2,4-triazole, and H(2)O at 200 degrees C for 96 h yields purple rods of [Co2(trz)3Cl] (1; trz = 1,2,4-triazolate) in 90% yield. The structure of 1 consists of {Co(trz)3}n(n-) chains of Co(II) sites linked through tetrahedral sites of {CoN(3)Cl} geometry into a three-dimensional framework. The competing antiferromagnetic interactions of the octahedral and tetrahedral Co(II) centers result in weak ferromagnetic behavior below Tc = 9 K.
Ouellette
Wayne
W
Department of Chemistry, Syracuse University, Syracuse, New York 13244, USA.
Galan-Mascarós
José R
JR
Dunbar
Kim R
KR
Zubieta
Jon
J