ABSTRACT
The synthesis of new large metal cluster complexes with interesting magnetic properties characteristic of nanoscale magnetic particles has become an attractive prospect in the last few years. These complexes exhibit magnetization hysteresis loops and out-of-phase ac magnetic sus ceptibility signals. The advantages of such clusters over fragmented bulk ferromagnets are their easy synthesis and manipulation, their high solubil ity, and their potential use in storing a large density of information. In this chapter we will focus our attention on the family of several distorted Mn4 cubane molecules with a [MnIYMn3II0 3 X]6+ core, tetranuclear vanadium(III) complexes with a butterfly structure and dodecanuclear manga nese complexes, [Mn1 2 0 1 2 (0 2 CR)1 6 (H2 0 )4 ] (where R can be an aliphatic or aromatic group) and their corresponding singly reduced salts (PPh4 )[Mn1 2 0 1 2 ( 0 2 CR)1 6 (H2 0 ) 4], which have been extensively studied in our laboratories.
