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A Series of 0D to 3D Anderson-type Polyoxometalate-based Compounds Obtained under Ambient and Hydrothermal Conditions

Abstract

Through using flexible ethanediamine (en) and bis(triazole) ligands, a series of Anderson POM-based compounds, [{CuII2(en)4}{Al(OH)6Mo6O18}]2·[{CuII(en)2}{Al(OH)6Mo6O18}]2·47H2O (1), [{CuII2(en)4}{Cr(OH)6Mo6O18}]2·[{CuII(en)2}{Cr(OH)6Mo6O18}]2·47H2O (2), [{CuII5/2(en)3(2-OH)2}{Al(OH)6Mo6O18}]·H2O (3), [{CuII(bte)2(H2O)}{HCr(OH)6Mo6O18}]·6H2O (4), [{CuII3(btp)2(H2O)4}{Cr(OH)6Mo6O18}2]·6H2O (5), [{CuI2(btp)}{Cr(OH)6Mo6O18}{K(H2O)2}] (6) and [Cd3(btp)2(H2O)14]H3[Cr(OH)6Mo6O18]3·16H2O (7) (bte = 1,2-bis(1,2,4-triazol-1-yl)ethane and btp = 1,3-bis(1,2,4-triazol-1-yl)propane) were synthesized and structurally characterized. In isostructural compounds 1 and 2, the 2D grid-like layers and 1D metal-organic chains arrange alternately through hydrogen bonding interactions. Compound 3 owns a 2D grid-like layer with Anderson anions linked by mono- and bi-nuclear CuII clusters alternately. Compound 4 shows a 1D cycle-connecting-cycle metal-organic chain with anions hanging on one side. In compound 5, the Cr2-anions are connected by [Cu3(btp)2]6+ subunits to form a 2D layer. The Cr1-anions link adjacent layers to build a 3D framework. In 6, the anions link ladder-like Cu-btp chains to construct a 3D framework, with K ions embedding in the channels. Compound 7 exhibits a discrete structure with [Cd3(btp)2(H2O)14]6+ as a counter cation. The successful syntheses of 1-7 reveal that both the proper ambient and hydrothermal conditions can induce Anderson based compounds with ease. Furthermore, we also studied the electrochemical and photocatalytic properties of the title compounds.

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Publication details

The article was received on 20 Nov 2018, accepted on 09 Jan 2019 and first published on 09 Jan 2019


Article type: Paper
DOI: 10.1039/C8CE01971A
Citation: CrystEngComm, 2019, Accepted Manuscript
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    A Series of 0D to 3D Anderson-type Polyoxometalate-based Compounds Obtained under Ambient and Hydrothermal Conditions

    J. Ying, Y. Chen and X. Wang, CrystEngComm, 2019, Accepted Manuscript , DOI: 10.1039/C8CE01971A

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