Four Keggin-based compounds constructed by a series of pyridine derivatives: synthesis, and electrochemical, photocatalytic and fluorescence sensing properties

Four compounds based on Keggin anions and Ag^I ions were obtained, the photocatalytic and electrochemical properties were studied. Compound 4 can act as a Hg²⁺ fluorescence sensor.

Architectural chemistry of polyoxometalate-based coordination frameworks constructed from flexible N-donor ligands

Polyoxometalate-based coordination frameworks (POMCFs) constructed from flexible N-donor ligands can exhibit diverse properties and fascinating architectures, extending the families of material chemistry and structural chemistry.

Polyanionic clusters embedded in lattice-type hydrogen bonding networks involving in situ bond activation and coupling of organic cations

Grid-type hydrogen bonding networks of organic cations are used to capture pseudo-spherical Keggin-type anionic clusters.

Synthesis of a novel CuI/CuII-containing sandwich-type cluster and its catalytic electron transfer property

A six-metal {Na₂Cu^ICu^II₃} sandwich-type heteropolyanion shows excellent catalytic activity for electron transfer reaction of ferricyanide to ferrocyanide by thiosulphate.

Synthesis of a poly-pendant 1-D chain based on ‘trans-vanadium’ bicapped, Keggin-type vanadtungstate and its photocatalytic properties

A vanadtungstate cluster-based organic–inorganic hybrid material [NiL₄V^IVW^VI₁₀W^V₂O₄₀(V^IVO)₂] was synthesized, which not only serves as an active photocatalyst for the degradation of dye molecules, but also exhibits selective photocatalytic degradation of cationic dyes in aqueous solution.

In situ ligand and complex transformation of an iron(III) Schiff base complex: structural evidence and theoretical calculations

A C-C coupling reaction has been achieved at room temperature by in situ ligand transformation. The iron(III) complexes before and after the in situ transformation, [FeNaL(1)(2)(H(2)O)(4)](2)·2H(2)O (1) (H(2)L(1) = (Z)-2-(2-hydroxyl)benzylideneamino) and [FeL(2)](2)·7.5H(2)O (2) (H(3)L(2) = (E)-2-(2-hydroxyl-benzylideneamino)-3-hydroxyl-3-(2-hydroxyphenyl), have been studied by elemental analyses, FT-IR, UV-vis, TGA and X-ray single crystal diffraction analysis. The proposed mechanism of this in situ transformation has been determined based on structural evidence and theoretical calculations using the density functional theory (DFT) M06 method.