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Organometallic Magnets pp 101–161Cite as

Mannich Base Ligands as Versatile Platforms for SMMs

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Part of the book series: Topics in Organometallic Chemistry ((TOPORGAN,volume 64))

Abstract

Aminophenol Mannich base derivatives are versatile and flexible ligands for preparing a wide variety of homo- and heterometallic discrete coordination compounds, ranging from mononuclear to hexanuclear, which exhibit aesthetically pleasant structures with intricate topologies. These ligands are particularly adapted to obtain 3d/4f systems, where invariably the amino fragment is coordinated to the transition metal ion and the phenolate oxygen atoms bridge transition metal and lanthanide ions. Their coordination spheres are completed by donor atoms belonging either to methoxy and aldehyde groups of the Mannich base ligands or to terminal and bridging ancillary ligands. Moreover, robust 3d-4f dinuclear units can be assembled with either bridging ligands or complexes acting as bridging ligands to afford heterometallic complexes with increased nuclearity. The complexes containing one or two paramagnetic ions often exhibit appealing magnetic properties, alone or combined with other physical properties, that essentially arise from large local magnetic anisotropy and magnetic exchange coupling of the metal ions. This chapter provides an overview of recent results on single-molecule magnets (SMMs) based on aminophenol Mannich base ligands that illustrate the scope, state of the art and fruitful dynamism of this field of research.

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Acknowledgements

I would like to express my most sincere gratitude and deep appreciation to all my collaborators, colleagues and students. Their names appear in the reference list. I am also very grateful to Ministerio de Economía y Competitividad (MINECO) of Spain for Project CTQ2014-56312-P and EU Feder Fund, the Junta de Andalucía (FQM-195 and the Project of excellence P11-FQM-7756) and the University of Granada for financial support.

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  1. Department of Inorganic Chemistry, University of Granada, Granada, Spain

    Enrique Colacio

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  1. Enrique Colacio
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Correspondence to Enrique Colacio .

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  1. Department of Chemistry, Indian Institute of Technology, Kanpur, India

    Vadapalli Chandrasekhar

  2. Institut des Sciences Chimiques de Rennes, Equipe Organométalliques : Matériaux et Catalyse, Rennes Cedex, France

    Fabrice Pointillart

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This chapter is dedicated to Prof. Jean Pierre Costes, on the occasion of his 65th birthday in recognition of his synthetic contributions to the field of 3d/4f coordination compounds.

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Colacio, E. (2018). Mannich Base Ligands as Versatile Platforms for SMMs. In: Chandrasekhar, V., Pointillart, F. (eds) Organometallic Magnets . Topics in Organometallic Chemistry, vol 64. Springer, Cham. https://doi.org/10.1007/3418_2018_4

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