Synthetic Route of C30H30N10In 2022 ,《Fluorinated click-derived tripodal ligands drive spin crossover in both iron(II) and cobalt(II) complexes》 appeared in Dalton Transactions. The author of the article were Noessler, Maite; Hunger, David; Neuman, Nicolas I.; Reimann, Marc; Reichert, Felix; Winkler, Mario; Klein, Johannes; Bens, Tobias; Suntrup, Lisa; Demeshko, Serhiy; Stubbe, Jessica; Kaupp, Martin; van Slageren, Joris; Sarkar, Biprajit. The article conveys some information:
Control of the spin state of metal complexes is important because it leads to a precise control over the phys. properties and the chem. reactivity of the metal complexes. Currently, controlling the spin state in metal complexes is challenging because a precise control of the properties of the secondary coordination sphere is often difficult. Noncovalent interactions in the secondary coordination sphere of transition metal complexes can enable spin state control. Here the authors exploit this strategy for fluorinated triazole ligands and present mononuclear CoII and FeII complexes with “”click””-derived tripodal ligands that contain mono-fluorinated benzyl substituents on the backbone. Structural characterization of 1 and 2 at 100 K revealed Co-N bond lengths that are typical of high spin (HS) CoII complexes. In contrast, the Fe-N bond lengths for 3 are characteristic of a low spin (LS) FeII state. All complexes show an intramol. face-to-face noncovalent interaction between two arms of the ligand. The influence of the substituents and of their geometric structure on the spin state of the metal center was studied through SQUID magnetometry, which revealed spin crossover occurring in compounds 1 and 3. EPR spectroscopy sheds further light on the electronic structures of 1 and 2 in their low- and high-spin states. Quantum-chem. calculations of the fluorobenzene mol. were performed to obtain insight into the influence of fluorine-specific interactions. The same fluorinated tripodal ligands induce SCO behavior in both FeII and CoII complexes. The experimental process involved the reaction of Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine(cas: 510758-28-8Synthetic Route of C30H30N10)
Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine(cas: 510758-28-8) is a polytriazolylamine ligand which stabilizes Cu(I) towards disproportionation and oxidation thus enhancing its catalytic effect in the azide-acetylene cycloaddition.Synthetic Route of C30H30N10
Referemce:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics