Enhanced Single‐Chain Magnet Behavior via Anisotropic Exchange in a Cyano‐Bridged Mo^III–Mn^II Chain

Abstract

Anisotropic magnetic exchange is of great value for the design of high performance molecular nanomagnets. In the present work, enhanced single‐chain magnet (SCM) behavior is observed for a MoIII–MnII chain that exhibits anisotropic magnetic exchange. Self‐assembly of the pentagonal bipyramidal [Mo(CN)7]4− anion and the MnII unit with a tridentate ligand results in a neutral double zigzag 2,4‐ribbon structure which exhibits SCM behavior with a high relaxation barrier of 178(4) K. Open magnetic hysteresis loops are observed below 5.2 K, with a coercive field of 1.5 T at 2 K. Interestingly, this SCM can be considered to be a result of a step‐wise process based on our previously reported Mn2Mo single‐molecule magnets (SMMs).

A single chain magnet based on a 1D polymeric selenite-bridged Mn(iii) complex with an N2O2 donor

“…Whereafter, a number of SCM-based antiferromagnets have been designed, constructed and reported. 8 In contrast to the productive hetero-spin system, 9 homometallic systems are rather limited. 10…”