Polynitrile anions as ligands: From magnetic polymeric architectures to spin crossover materials |
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Authors: | Samia Benmansour Chahlae Atmani Fatima Setifi Smaïl Triki Mathieu Marchivie Carlos J. Gómez-García |
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Affiliation: | 1. Instituto de Ciencia Molecular (ICMol), Parque Científico, Universidad de Valencia, Spain;2. UMR CNRS 6521, Université de Bretagne Occidentale, BP 809, 29285 Brest Cedex, France |
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Abstract: | The use of polynitrile anions as ligands (L) either alone or in combination with neutral co-ligands (L′) is a very promising and appealing strategy to get molecular architectures with different topologies and dimensionalities thanks to their ability to coordinate and bridge metal ions in many different ways. The presence of several potentially coordinating nitrile groups (or even other donor groups as –OH, –SH or –NH2), their rigidity and their electronic delocalization allow the synthesis of original magnetic high dimensional coordination polymers with transition metals ions. Furthermore, these ligands have shown coordinating and bridging capabilities in novel discrete and polymeric bistable materials (materials showing original magnetic behaviours or spin crossover (SCO) transitions). Here we report an overview of the results obtained with some of these modified polynitrile ligands, showing their rich coordination chemistry and their crucial role in new molecular materials exhibiting unusual magnetic transitions. |
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