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A flexible octadentate C-shaped bis(salamo)-based ligand (H4L) with two different coordination environments, which can react with different metal salts to form heterotrinuclear zinc(II)-lanthanide(III) bis(salamo)-based complexes [Zn2La(L)(µ2-OAc)2(η2-NO3)]·2CH2Cl2 (1) and [Zn2Ce(L)(µ2-OAc)2(η2-NO3)] (2). The detailed analysis of Hirshfeld surfaces and fingerprints compares the intermolecular interactions, which are very important for the construction of different supramolecular structures. The molecules are connected by the combination of C–H···O hydrogen bonds to form an infinite 1D supramolecular chain. [ABSTRACT FROM AUTHOR]

Two new trinuclear Ni(II) complexes, [{Ni(L)(DMF)(μ-OAc)}2Ni] (1) and [{Ni(L)(EtOH)(μ-OAc)}2Ni]·2CH2Cl2 (2), have been successfully synthesized from a new asymmetric salamo-based hexa-dentate chelating ligand (H2L) and Ni(OAc)2·4H2O, and characterized by elemental analysis, IR and UV-Vis spectra, and X-ray crystallography. The binding ratio of H2L and Ni(II) ion has been confirmed by UV-Vis titration. All Ni(II) atoms are hexa-coordinated, and the complexes have octahedral configuration, though with difference in the solvent molecules (DMF/EtOH) involved in the coordination, composition of the hydrogen bond and chemical stability. This conclusion is confirmed by Hirshfeld surfaces analyses and Density Functional Theory (DFT). [ABSTRACT FROM AUTHOR]