Noncovalent Interactions at Lanthanide Complexes

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Abstract
Lanthanide complexes have attracted a widespread attention due to their structural diversity, as well as multifunctional and tunable properties. The development of lanthanide based functional materials has often relied on the design of the secondary coordination sphere of the corresponding lanthanide complexes. For instance, usually simple lanthanide salts (solvento complexes) do not catalyze effectively organic reactions or provide low yield of the expected product, whereas the presence of a suitable organic ligand with a noncovalent bond donor or acceptor centre (secondary coordination sphere) modifies the symmetry around the metal centre in lanthanide complexes which then successfully can act as catalysts in both homogenous and heterogenous catalysis. In this minireview, we discuss several relevant examples, based on X‐ray crystal structure analyses, in which the hydrogen, halogen, chalcogen, pnictogen, tetrel and rare‐earth bonds, as well as cation‐π, anion‐π, lone pair‐π, π–π and pancake interactions, are used as a synthon in the decoration of the secondary coordination sphere of lanthanide complexes.
Funding Information
  • Fundação para a Ciência e a Tecnologia (UIDB/00100/2020, IST-ID/85/2018)
  • RUDN University
  • Baki Dövlət Universiteti

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