Structural and Magnetic Variations in a Family of Isoskeletal, Oximate-Bridged {Mn M } Complexes (M =Mn, Gd, Dy).

The self-assembly reaction of MnCl ⋅4H O, acenaphthenequinone dioxime (acndH ) and NEt has yielded an unprecedented, linear {Mn Mn } complex with an S=5 spin ground state and non-SMM behavior. The targeted replacement of the central Mn ion with Gd and Dy ions has successfully increased the S and turned on the SMM dynamics without affecting the core structure and the nature of the magnetic exchange interactions.