Journal
CHEMICAL PAPERS
Volume 77, Issue 10, Pages 6255-6266Publisher
SPRINGER INT PUBL AG
DOI: 10.1007/s11696-023-02935-9
Keywords
Single-armed salamo-like ligand; Co(III) complex; Supramolecular feature; Hirshfeld surface analysis; Fluorescence property
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A structurally novel bi-nuclear Co(III) complex was prepared and characterized. The complex consists of two Co(III) atoms, two fully deprotonated ligand (L)(3-) units, and two coordinated -H2O molecules. The emission spectrum studies showed that the complex exhibits fluorescence quenching. Hirshfeld surfaces analyses revealed that H center dot center dot center dot H interaction contributes the most to the 2D fingerprinting map.
A structurally novel bi-nuclear Co(III) complex ([Co-2(L)(2)(H2O)(2)]) was prepared by the reaction of a single-armed salamolike ligand -H3L and Co(II) acetate tetrahydrates in methanol solution and characterized structurally. The crystallography data revealed that the Co(III) complex is bi-nuclear, and composed of two Co(III) atoms, two fully deprotonated ligand (L)(3-) units and two coordinated -H2O molecules. This structurally novel Co(III) complex is different from the previously reported complexes derived from other similar single-armed salamo-like ligands. Each Co(III) atom partially occupies the N2O2 cavity of the ligand (L)(3-) unit and the -NO3 cavity of another deprotonated ligand (L)(3-) unit. Significantly, divalent Co(II) ions are oxidized to trivalent Co(III) ions upon coordination with the ligand (L)(3-) units. Emission spectrum studies showed that the Co(III) complex is fluorescence quenched. Hirshfeld surfaces analyses revealed that H center dot center dot center dot H interaction contributes the most to the 2D fingerprinting map. [GRAPHICS] .
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