Control and Transferability of Magnetic Interactions in Supramolecular Structures: Trimers of {Cr₇ Ni} Antiferromagnetic Rings.

ABSTRACT: A synthetic strategy is demonstrated to prepare two distinct trimers of antiferromagnetically coupled {Cr₇ Ni} rings, substantially varying the magnetic interactions between the spin centres. The interactions were studied using multi-frequency cw EPR: in a trimer linked via non-covalent H-bonding interactions no measurable interaction between rings was seen, while in a trimer linked via iso-nicotinate groups isotropic and anisotropic exchange interactions of +0.42 and -0.8 GHz, respectively, were observed. The latter are the same as those for a simpler hetero-dimer system, showing how the spin-spin interactions can be built in a predictable and modular manner in these systems.

SUBMITTER: Lockyer SJ 

PROVIDER: S-EPMC10947047 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature