Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 27, Issue 58, Pages 14370-14389Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202102245
Keywords
crystal engineering; lanthanide complexes; noncovalent interactions; synthesis
Categories
Funding
- Fundacao para a Ciencia e Tecnologia (FCT) of Centro de Quimica Estrutural [UIDB/00100/2020]
- Instituto Superior Tecnico [DL 57/2016, L 57/2017, IST-ID/85/2018]
- RUDN University Strategic Academic Leadership Program
- Baku State University, Azerbaijan
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Lanthanide complexes have diverse structures and properties, and the design of the secondary coordination sphere is crucial for their development as functional materials. Various interactions, such as hydrogen bonds, halogen bonds, and pi interactions, are used to decorate the secondary coordination sphere of lanthanide complexes.
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-pi, anion-pi, lone pair-pi, pi-pi and pancake interactions, are used as a synthon in the decoration of the secondary coordination sphere of lanthanide complexes.
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