Fluorescence Properties and Density Functional Theory Calculation of a Structurally Characterized Heterotetranuclear [Zn<sup>II</sup><sub>2</sub>–Sm<sup>III</sup><sub>2</sub>] 4,4′-Bipy-Salamo-Constructed Complex
oleh: Xiao-Xin An, Chang Liu, Zhuang-Zhuang Chen, Ke-Feng Xie, Yang Zhang
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2019-11-01 |
Deskripsi
A new heterotetranuclear complex, [{Zn(L)Sm(NO<sub>3</sub>)<sub>3</sub>}<sub>2</sub>(4,4′-bipy)]<b>·</b>2CH<sub>3</sub>OH, was synthesized via an unsymmetrical single salamo-like ligand H<sub>2</sub>L: 6-methoxy-6′-ethoxy-2,2′-[ethylenedioxybis(azinomethyl)]diphenol, with Zn(OAc)<sub>2</sub><b>·</b>2H<sub>2</sub>O, Sm(NO<sub>3</sub>)<sub>3</sub><b>·</b>6H<sub>2</sub>O, and 4,4′-bipyridine by the one-pot method. The [Zn<sup>II</sup><sub>2</sub>−Sm<sup>III</sup><sub>2</sub>] complex was validated via elemental analysis, powder X-ray diffraction (PXRD) analysis, infrared spectroscopy, and ultraviolet−visible (UV−Vis) absorption spectroscopy. The X-ray single crystal diffraction analysis of the [Zn<sup>II</sup><sub>2</sub>−Sm<sup>III</sup><sub>2</sub>] complex was carried out via X-ray single-crystal crystallography. The crystal structure and supramolecular features were discussed. In addition, while studying the fluorescence properties of the [Zn<sup>II</sup><sub>2</sub>−Sm<sup>III</sup><sub>2</sub>] complex, the density functional theory (DFT) calculation of its structure was also performed.