A new vanadium sulfate with ferrimagnetic and NLO properties constructed from novel discrete umbrella-like [V(V)(μ₃-O)₄V(IV)₄O₅(SO₄)₄(en)]⁵⁻ anions.

A new vanadium sulfate, [H2N(CH3)2](19/3)(en)[V5O5(μ3-O)4(SO4)4](SO4)(2/3)[HN(CH3)2](2/3) 1, constructed from novel umbrella-like [V(V)(μ3-O)4V(IV)4O5(SO4)4(en)](5-) anions was synthesized and structurally characterized using single-crystal X-ray analysis. The magnetic and optical studies of 1 indicate that the title compound exhibits significant ZFS (zero field splitting), interesting ferrimagnetic interactions and strong two photon absorption.

Syntheses, structures and properties of two new organic-inorganic hybrid materials based on ε-Zn Keggin units {ε-PMo(V)8Mo(VI)4O(40-x)(OH)(x)Zn4}.

Two novel organic-inorganic hybrids, Na[PMo(V)8Mo(VI)4O38(OH)2Zn4][pyim]2·1.5H2O [ε(pyim)2] (pyim = 2-(2-pyridyl)-imidazole) and [PMo(V)8Mo(VI)4O37(OH)3Zn4]2[pyim]6·4H2O [ε2(pyim)6], based on ε-Zn Keggin units {ε-PMo(V)8Mo(VI)4O(40-x)(OH)(x)Zn4}, have been successfully synthesized under hydrothermal conditions by controlling the pH values. Structural analysis indicates that the framework of ε(pyim)2 is a 1D chain constructed by monomeric ε-Zn units modified by pyim ligands, while ε2(pyim)6 is an isolated structural compound with dimeric ε-Zn units modified by pyim ligands.

Four 2D "fully reduced" polyoxovanadates: vanadium oxide clusters encapsulating different guest molecules.

Four two-dimensional fully reduced polyoxovanadates, namely, [Cd(DAP)2]4[HV(III)3V(IV)18P6O60(DAP)3(HOCH2CH2OH)]·10H2O (1), [Cd(DAP)2]4[HV(III)3V(IV)18P6O60(DAP)3(CH3OH)]·11H2O (2), [Cd(DAP)2]4[HV(III)3V(IV)18P6O60(DAP)3(CH3CH2OH)]·4H2O (3) and Co(III)(DAP)3[Co(II)(DAP)2]3[V(III)3V(IV)18P6O60(DAP)3(HOCH2CH2OH)]·14H2O (4) were synthesized by virtue of the reducing power of alkylamine in hydrothermal conditions. Single-crystal X-ray structural analysis, magnetic measurement, IR spectroscopy, elemental analysis, and thermogravimetric measurements were performed to analyze the structures and properties of these four compounds. Structural analysis indicates that the four compounds contain the same huge low-valent vanadium oxide anion cages [V(III)3V(IV)18P6O60(DAP)3](9-), and the cages can catch different guest molecules.

A novel dumbbell-like polyoxometalate assembled of copper(II)-disubstituted monovacant keggin polyoxoanions with a tetranuclear copper cluster.

A dimeric Keggin polyoxometalate, [Cu(bpy)(μ2-OH)]4[(H2O)(bpy)2HPW11Cu2O39]2·2CH3CH2OH·10H2O (1), constructed from two dicopper(II)-substituted monovacant Keggin polyoxoanions bridged by a Cu4 cluster, has been hydrothermally synthesized. Magnetic analysis indicates predominantly an antiferromagnetic interaction between copper(II) centers. Compound 1 also shows very high catalytic activity for the esterification of phosphoric acid with equimolar lauryl alcohol to monoalkyl phosphate ester.

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.