A new member of a class of rod-like Mn single molecule magnets using 2-(pyridine-2-ly)propan-2-ol.

This paper reports on the synthesis, structure and magnetic properties of a new type of rod like Mn metal cluster, [MnO(OH)(OMe)(dmhmp)(OCPh)(HO)] (6) where the ligand (dmhmpH) is 2-(pyridine-2-yl)propan-2-ol. Compound (6) was obtained by reacting MnCl·4HO with dmhmpH in the presence of benzoic salt and EtN. The resulting crystalline material is assigned to the triclinic space group 1̄. Although compound (6) displays ferromagnetic and antiferromagnetic competition behavior, this does not prevent the molecule from functioning as a single-molecule magnet (SMM). The SMM behavior is evidenced by observing frequency dependent out-of-phase ac signals as well as magnetization hysteresis loops at low temperatures in a micro-SQUID study. A brief comparison between all rod-like Mn materials is also given in the manuscript.