Abstract
An organic–inorganic hybrid based on {P2Mo5} clusters, (H2bim)3[{Na0.5(H2O)0.5}2{Mn(OH)4(H2O)2}{Na0.5(H2bim)}2{Mn(H2O)4(P2Mo5O23)2}]·4H2O (1) (bim = 2,2′-biimidazole), was hydrothermally synthesized and characterized by elemental analyses, IR, TG, UV, and single crystal X-ray diffraction analyses. In 1, four Na ions, one Mn, and two bim ligands are linked by four μ–O bridges to form unusual pentanuclear fragments [{Na0.5(H2O)0.5}2{Mn(OH)4(H2O)2}{Na0.5(H2bim)}2]. Each pentanuclear segment links adjacent to four Standberg units to form supramolecular dimer chains, which are further connected by Mn(H2O)4 linkers to yield infinite 2-D layer. Two kinds of cage-like pores are observed in alternating type along the crystallographic b axis in which protonated H2bim ligands fill one sort of pores. Electrochemical and fluorescent properties of 1 have been investigated.
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