Supramolecular of Lanthanide-2,6-Dimethylbenzoic -2,2′:6′,2″-Terpyridine Materials: Crystal Structures, Luminescent Property, and Thermochemical Behaviour

16 Pages Posted: 23 Sep 2020

See all articles by Jia-Yuan Zhao

Jia-Yuan Zhao

affiliation not provided to SSRN

Jian-jun Zhang

affiliation not provided to SSRN

Abstract

Three mononuclear complexes [Ln (2,6-DMBA)3(terpy)](Ln=Dy(1),Ho(2),Er(3); 2,6-DMBA = 2,6-dimethylbenzoic; terpy = 2,2′:6′,2′′- terpyridine) were synthesized via conventional solution method and characterized by elemental analysis, IR spectra, thermal analysis and single X-ray diffraction techniques. The single-crystal X-ray structures of complex 1-3 are described here, and the complexes are isomorphous and crystallize in the orthorhombic crystal system Pbcn space group. Each Ln(III) is nine-coordinated by six O atoms from three 2,6-DMBA ligands and three N atoms from a terpy molecule, which is defined as a distorted monocapped square anti-prismatic geometry. Each adjacent Ln(III) structural unit forms a 2D supramolecular structure through C-H···O intermolecular hydrogen bonding interaction. The thermal decomposition mechanism of complexes 1-3 were analyzed by TG/DSC-FTIR. The luminescence spectra of Dy (III) complex were studied and the characteristic emission peaks of Dy (III) ion were observed.

Keywords: lanthanide complexes, aromatic carboxylic acids, crystal structure

Suggested Citation

Zhao, Jia-Yuan and Zhang, Jian-jun, Supramolecular of Lanthanide-2,6-Dimethylbenzoic -2,2′:6′,2″-Terpyridine Materials: Crystal Structures, Luminescent Property, and Thermochemical Behaviour. Available at SSRN: https://ssrn.com/abstract=3696922

Jia-Yuan Zhao

affiliation not provided to SSRN

No Address Available

Jian-jun Zhang (Contact Author)

affiliation not provided to SSRN

No Address Available

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