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Enhancing Magnetic Communication between Metal Centres: The Role of s ‐Tetrazine Based Radicals as Ligands
Author(s) -
Mavragani Niki,
Kitos Alexandros A.,
Brusso Jaclyn L.,
Murugesu Muralee
Publication year - 2021
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202004215
Subject(s) - tetrazine , chemistry , lanthanide , combinatorial chemistry , radical , transition metal , magnetism , molecule , metal , redox , nanotechnology , computational chemistry , materials science , ion , inorganic chemistry , organic chemistry , catalysis , physics , quantum mechanics
Although 1,2,4,5‐tetrazines or s ‐tetrazines have been known in the literature for more than a century, their coordination chemistry has become increasingly popular in recent years due to their unique redox activity, multiple binding sites and their various applications. The electron‐poor character of the ring and stabilization of the radical anion through all four nitrogen atoms in their metal complexes provide new aspects in molecular magnetism towards the synthesis of new high performing Single Molecule Magnets (SMMs). The scope of this review is to examine the role of s ‐tetrazine radical ligands in transition metal and lanthanide based SMMs and provide a critical overview of the progress thus far in this field. As well, general synthetic routes and new insights for the preparation of s ‐tetrazines are discussed, along with their redox activity and applications in various fields. Concluding remarks along with the limitations and perspectives of these ligands are discussed.