Abstract
A novel Zn6Co3 cluster-based heterometallic coordination polymer, [Zn6Co3(PMG)6(H2O)4]·12H2O (1), has been hydrothermally synthesized, in which the PMG3− (N-(phosphonomethyl)glycinate) as a multifunctional ligand was firstly formed via in situ decarboxylation from original ligand N-(phosphonomethyl)imino-diacetic acid during the hydrothermal reaction. The complex was characterized by elemental analysis, FT-IR, powder X-ray diffraction, thermal analysis and single-crystal X-ray diffraction techniques. Its structure features a 2D framework constructed by [Zn6Co3(PMG)6(H2O)4] pinwheel-like heteronuclear clusters, which contains rings with two tropisms. Through extensive O–H⋯O hydrogen bondings, the adjacent 2D layered structure further extends into a 3D supramolecular network. Moreover, the solid-state fluorescence property of this complex has also been investigated at room temperature, which exhibits a good fluorescent emission.
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