Fluorescence Properties and Density Functional Theory Calculation of a Structurally Characterized Heterotetranuclear [ZnII2-SmIII2] 4,4′-Bipy-Salamo-Constructed Complex

A new heterotetranuclear complex, [{Zn(L)Sm(NO3)(3)}(2)(4,4'-bipy)]center dot 2CH(3)OH, was synthesized via an unsymmetrical single salamo-like ligand H2L: 6-methoxy-6'-ethoxy-2,2'-[ethylenedioxybis(azinomethyl)]diphenol, with Zn(OAc)(2)center dot 2H(2)O, Sm(NO3)(3)center dot 6H(2)O, and 4,4'-bipyridine by the one-pot method. The [Zn-2(II)-Sm-2(III)] 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-2(II)-Sm-2(III)] 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-2(II)-Sm-2(III)] complex, the density functional theory (DFT) calculation of its structure was also performed.