Single-molecule magnets (SMMs) the ability to store data, much like computer hard drives, but are able to do so with far fewer atoms. Unfortunately the operating temperature for most SMMs are extremely low, approximately near 10 K. In order to raise the operating temperatures various compounds have been synthesized that show SMM tendencies. One class of compounds synthesized that shows SMM qualities are metallacrowns (MC). One type of metallacrown that will be investigated in particular is a manganese-based 12-MC-4 complex. To better understand the magnetic behavior the components of the metallacrown framework, the components must be systematically altered.  Previously it has been shown that the counteranion carboxylate bridging ligands may be varied through facile synthetic changes.  However, variation of the ring metal ions can be a greater synthetic challenge.  Herein we present a synthetic strategy for substituting the ring manganese(III) ions with diamagnetic ions such as aluminum(III).  Through careful attention to molecular charge considerations and stoichiometric reactions conditions, individual metallacrown structural units can be achieved. The successful synthesis of these metallacrowns will allow us to examine and determine what aspects of the structure are leading to the magnetic behavior.<br/>

Ring metal substitution of 12-metallacrown-4 compounds

251st National Meeting (2016)

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