Polyoxometalatocrown ether: A new type of metallacrown ether based on polyoxometalate

Abstract

Using chain-like polyethers consisting of two terminal -NH 2 groups and (TBA) 4 [α-Mo 8 O 26 ] as starting materials, two polyoxometalatocrown ethers were prepared by a cyclization reaction through the formation of Mo≡N triple bonds: (TBA) 2 [Mo 6 O 17 N(o-C 6 H 4 OCH 2 (CH 2 OCH 2 ) n CH 2 OC 6 H 4 -o)N] (compounds 1, n = 1; 2, n = 2).As confirmed by single-crystal X-ray diffraction and infrared (IR) studies, the polyoxometalatocrown ether 2 can capture primary ammonium cations in solid state.

Polyoxometalate templated silver-bisphosphine sandwich: structurally tunable hybrid materials

“…Advanced POM-based functional materials are a complicated and challenging research area. 1–7 The utilisation of organic ligands or complex units to functionalize POMs is a unique method for generating organic–inorganic hybrid materials based on POMs. 8–14 These organically functionalized hybrid POMs have been synthesized by replacing one or more oxo or [MoO x ] n + groups with organic functional groups.…”

“…16–18 Protonated water molecules, protonated amines of organic molecules, and alkali and rare earth metal ions all can be included in the cavities of CEs. 7,19,20 It is possible to combine Keggin POMs with both β-CD and γ-CD to create 2 : 1 sandwich structures with a molar ratio of CD to POM. 21–23 PPs, which represents a class of macrocyclic compounds suitable for coordination with transition metals, can connect Keggin {PMo 12 } by the pyridine group with Mo atoms.…”

Polyoxometalate–Dicarboxylate Hybrid Dimers with {SiW10Cr2} Nodes: Syntheses, Structures, and Mass Spectrometric Characterization

“…As a class of high valence metal oxygen clusters, polyoxometalates (POMs) are often characterized by tunable structures, oxygen-rich surfaces, and unique acid–base and redox properties . Many of such POM clusters can be deliberately functionalized to create POM–organic hybrids with diverse functions . Using POM clusters as nodes, thus, is very attractive for the incorporation of electrically, optically, or catalytically active components into the coordination macrocycles and cages.…”