Multihalogen-Substituted Salamo-Type Mn(II) Complexes: Syntheses, Crystal Structures, Hirshfeld Analyses and Fluorescence Properties

Two manganese(II) complexes [Mn(L-1)(H2O)(2)] (1) and [Mn(L-2)(H2O)(2)]center dot 0.37H(2)O (2) were synthesized by the reactions of halogen-substituted salamo-type bisoxime ligands H2L1, H2L2 with manganese (II) acetate tetrahydrate in organic solvents, and the two complexes were characterized by the means of elemental analyses, FT-IR, UV-visible absorption spectra, single-crystal X-ray diffractions, fluorescence spectra and Hirshfeld surfaces analyses. X-ray crystallography results indicated that the manganese(II) ions in the two complexes are all six-coordinated, in which the N2O2 of the salamo-type ligand occupied the planar position, and two coordinated water molecules occupied the axial positions, forming distorted octahedral coordination geometries. Due to abundant hydrogen bonding interactions, infinite 1D and 2D supramolecular structures are formed in complexes 1 and 2, respectively. CCDC: 1813346, 1; 1816807, 2.