Synthesis, Crystal Structure, and Electrochemical Properties of an Isopolyoxovanadate Compound Modified Transition-Metal Complex Based on [V4O12]4−

A new isopolyoxovanadate compound [Zn(phen)3]2·(V4O12)·phen·20H2O (phen = 1,10-phenathroline) (1) has been synthesized in aqueous solution and characterized using IR and UV/Vis spectroscopy, elemental analysis, thermal gravimetric analysis, powder, single-crystal X-ray diffractions, and field emission scanning electron microscopy. The molecular structure of 1 exists as two kinds of [V4O12]4− polyoxoanions: distorted chair-like and coplanar conformations, two independent [Zn(phen)3]2+ units and free phen. In the solid state, compound 1 forms a stable three-dimensional supramolecular structure through electrostatic interactions, π–π stacking interactions and multiform hydrogen bonds. The electrocatalytic activity and determination of DA of compound 1 have been studied by cyclic voltammetry and differential pulse voltammetry, respectively.

A pair of new chiral polyoxovanadates with decent NLO properties

Through utilizing a two-step method to successfully prepare a pair of enantiomers trataric-polyoxovanadate [(l/d-C₄O₆H₂)₂V₄O₈]·2C₆N₂H₁₈ (1-L or 1-D), these compounds show decent third-order NLO property and electrochemical behavior.

Zn(ii) and Cd(ii) coordination networks based on N-donor ligands: synthesis, crystal structures, and sensing of nitroaromatic explosives

Four new Zn(ii)/Cd(ii) complexes with 1D, 2D, and 3D structures have been synthesized and they exhibit high sensitivity sensing responses to nitroaromatic explosives.

Solvent-induced construction of two zinc metal–organic frameworks for highly selective detection of nitroaromatic explosives

Two three-dimensional metal–organic frameworks 1 and 2 based on p-terphenyl-3,4′′,5-tricarboxylic acid (H₃TPT) were synthesized by controlling the solvent media. These two MOFs exhibit high efficiency for the recyclable detection of nitroaromatic compounds.

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.

Syntheses, structures and properties of two 2-D layered hybrid organic-inorganic materials based on different V4O12 building units

Two new layered hybrid organic-inorganic compounds [Zn(pyim)]2V4O12 () (pyim = 2-(2-pyridyl)imidazole) and [Cu(bim)2]2V4O12(H2O)·CH3CH2OH () (bim = bis(1-imidazolyl)methane) based on polyoxovanadates (POVs) and organic ligands decorated transition metal units have been synthesized by hydrothermal and solvothermal methods respectively. Single crystal XRD, fluorescence spectrum, magnetic measurement, IR spectra, powder XRD and thermogravimetric (TG) measurements were performed to analyze the structures and properties of and . The structural analysis reveals that compound features a two-dimensional {[Zn(pyim)]2V4O12}n layered structure, constructed by sine wave-like {V4O12}n(4n-) chains, Zn(2+) ions and pyim ligands. In the layered structure of , {V4O12}(4-) circles are connected by Cu(2+) ions to form {Cu(V4O12)}n(2n-) chains, which are further linked by {Cu(bim)4}(2+) subunits to generate a hybrid layer of . The magnetic susceptibility measurement indicates strong antiferromagnetic interactions between Cu(2+) ions in .

Organic Molecular Crystals: From Non-Porous Structure to Potential Porous Structure Controlled by Reaction Temperature

Reported here are two novel organic crystals, L 1 and L·(DMF)1.5 2 (DMF = (CH3)2NCHO), showing non-porous and microporous structure, where the formations can be precisely controlled by varying the reaction temperature. The reason for this exciting discovery could be directly related to the various degrees of distortion in the organic molecules as observed in 1 and 2, where detailed structural studies were carried out.