Abstract
AbstractTwo new inorganic‐organic hybrid materials containing different isopolymolybdate units, namely, [{Ce(pdca)(H2O)}{Ce(pdca)(H2O)5}]2{Mo8O26}·10H2O (1), [Cu(phen)(H2O)2]2[Mo6O20] (2) (pdca=pyridine‐2,6‐dicarboxylic acid, phen=1,10‐phenanthroline) have been successfully synthesized under hydrothermal conditions, and characterized by elemental analyses, IR spectra, thermal gravimetric analyses (TGA), single‐crystal X‐ray diffraction and powder X‐ray diffraction (PXRD). In compound 1, Ce(III) ions are bridged by pdca ligands to form cerium‐organic coordination layers, which are further pillared by octamolybdate clusters via the covalent bonding of CeO, leading to the formation of a 3D pillar‐layered open‐framework architecture. Compound 2 features a 3D supramolecular structure constructed by hydrogen bond interactions between 1D molybdate chains aggregated by [Mo6O20]4− polyoxoanions and coordinated water molecules. It was remarkable that H3[PMo12O40]·ΧH2O decomposes into hexamolybdate anions, which are linked together with phen ligands by Cu(II) cation. Moreover, UV‐vis spectra and fluorescence properties of compounds 1–2 have also been investigated in detail.
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