One-Dimensional Chain of Tetranuclear Manganese Single-Molecule Magnets

A one-dimensional chain of interconnected single-molecule magnets
(SMMs) is obtained that consists of [Mn4(hmp)6]4+ units bridged
by chloride ions. Slow magnetization relaxation is evident in the
AC susceptibility data and in magnetization hysteresis measurements for [Mn4(hmp)6Cl2]n(ClO4)2n. The magnetization hysteresis
loops for this complex are similar to those for an SMM and show
significant coercive field and steps at regular magnetic intervals.
Spin-canted antiferromagnetic coupling due to misalignment of easy
axes of neighboring Mn4 units is also observed for this complex.