T. Mallah et al., HEXACYANOMETALATES - MOLECULAR PRECURSORS FOR HIGH-SPIN MOLECULES ANDHIGH-T-C MOLECULE-BASED MAGNETS, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 273, 1995, pp. 141-151
Hexacyanometalates [B-III(CN)(6))](3-) react with Lewis acids [AL](2+)
or A(2+) to give either oligonuclear complexes with high-spin ground
states [B-III(CN-A(II)L)(6))](9+) or three-dimensional (3D) networks w
ith variable Curie temperature T-C. We report the magnetic properties
of (i) an heptanuclear complex [Cr(CN-Ni(tetren)(6)] (ClO4)(9) (tetren
is tetraethylenepentamine) exhibiting a S = 15/2 ground state and (ii
) a series of hexacyanometalates-based magnets, with T-C ranging from
9K to room temperature. We present the magnetic dichroic properties of
some of the 3D materials, in the visible and in the X-ray range.