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Two novel complexes [Cu(L)(OAc)]·CH 3 OH (1) and [Ni(L)(OAc)] (2) formed with a quinolone-modified half-salamo-like ligand (HL) were successfully synthesized and characterized structurally. In addition, Fluorescence properties, DFT theoretical calculations and Hirshfeld surfaces analyses of the ligand HL and its corresponding complexes were also investigated. [Display omitted] • The introduction of quinoline into half-salamo-like ligand HL has been developed triumphantly. • Two novel complexes [Cu(L)(OAc)]·CH 3 OH (1) and [Ni(L)(OAc)] (2) were synthesized and ascertained structurally. • Fluorescence properties, DFT theoretical calculation and Hirshfeld surfaces analyses were investigated. Two novel Cu(II) and Ni(II) complexes, [Cu(L)(OAc)]·CH 3 OH (1) and [Ni(L)(OAc)] (2) formed with a newly designed quinolone-modified half-salamo-like ligand (HL) were successfully obtained. Elemental analyses, infrared spectra and UV–visible absorption spectra were employed triumphantly to characterize the complexes 1 and 2. X-ray single-crystal diffraction analysis results indicated that the complex 1 is composed of a fully deprotonated ligand (L)- unit, one Cu(II) atom and one monodentate coordinated acetate ion. For the complex 1 , the central Cu(II) atom is five coordinated adopting a slightly distorted triangular biconical geometry, while the complex 2 has two independent structural units (molecules A and B), which shows chemically identical but crystallographically independent. The central Ni(II) atom is six coordinated possessing a distorted octahedral configuration. In addition, Fluorescence properties, DFT theoretical calculations and Hirshfeld surfaces analyses of the ligand HL and its corresponding complexes 1 and 2 were also investigated in detail. [ABSTRACT FROM AUTHOR]

Two unusual heterobimetallic [CuII 4 LnIII 2 ] complexes were constructed from a N 2 O 2 - and O 6 -donor bis(salamo)-based ligand (H 4 L), and characterized structurally. The intermolecular interactions were quantitatively analyzed by Hirshfeld surfaces, as well as, fluorescence properties have also been studied. [Display omitted] • Two structurally novel heterobimetallic hexanuclear [CuII 4 LnIII 2 ] complexes were prepared using a designed N 2 O 2 - and O 6 -donor bis(salamo)-based ligand. • The different natures of three-compartmental H 4 L lead to the site‐selective introduction of two various metalII/III atoms. • Quantitative analyses of intermolecular interactions were evaluated by Hirshfeld surfaces analyses. • The fluorescence properties were further discussed. Two unusual heterobimetallic [CuII 4 LnIII 2 ] complexes, [{Cu 4 (L) 2 La 2 (ƞ 2-NO 3) 6 (EtOH)}]·2Me 2 CO (1) and [{Cu 4 (L) 2 Ce 2 (ƞ 2-NO 3) 6 (EtOH)} 2 ]·4Me 2 CO·MeOH (2) were constructed from a N 2 O 2 - and O 6 -donor bis(salamo)-based ligand (H 4 L). The structures were characterized by physical chemistry and spectroscopy methods. The two complexes 1 and 2 have similar structures, two heterotrinuclear parts with the same structure are linked by the coordination between one CuII atom and oxime-type oxygen atoms to obtain the heterohexanuclear complexes 1 and 2. Four penta-coordinate CuII atoms are located at the N 2 O 2 cavities of the ligand (L)4- units, two LaIII/CeIII atoms are surrounded by the open-chain 18-crown-6 (O 6) coordination environment. At the same time, eight bridged phenol oxygen atoms connect the six CuII/LnIII atoms. Infinite three-dimensional supra-molecular structures are formed in complexes 1 and 2 through H-bonds. The intermolecular interactions were quantitatively analyzed by Hirshfeld surfaces, as well as, fluorescence properties have also been studied. [ABSTRACT FROM AUTHOR]