Controlling magnetic communication through aromatic bridges by variation in torsion angle

Thomas B. Faust , Floriana Tuna (1) , Grigore A. Timco (2) , Marco Affronte (3) , Valerio Bellini (4) , Wolfgang Wernsdorfer (5) , Richard E. P. Winpenny (2, 6)

1 School of Chemistry and Photon Science Institute
2 School of Chemistry [Manchester]
3 CNR-INFM and Dipartimento di Fisica, Università di Modena e Reggio Emilia
4 Institute of Nanosciences
5 NEEL - QuantECA - Circuits électroniques quantiques Alpes
6 Photon Science Institute

A series of heteroaromatic bridging ligands are employed in the synthesis of a family of paramagnetic, heterometallic ring dimers. The extent of spin propagation between the rings via the organic conduit is investigated through micro-SQUID magnetometry and EPR spectroscopy from which conclusions over the mechanism of spin-communication are drawn.

Domaines: Physique [physics]

Thomas B. Faust, Floriana Tuna, Grigore A. Timco, Marco Affronte, Valerio Bellini, et al.. Controlling magnetic communication through aromatic bridges by variation in torsion angle. Dalton Transactions, 2012, 41 (44), pp.13626-13631. ⟨10.1039/C2DT31292A⟩. ⟨hal-00975512⟩