A Basket Tetradecavanadate Cluster with Blue Luminescence

Abstract

A blue luminescent tetradecavanadate compound, [Et4N]5[V14O36Cl], has been synthesized. It possesses an unprecedented half-open basket framework. Through the {ABAB}-type stacking, the {V14O36} clusters form infinite one-dimensional channels with considerable accessible volume in the crystalline state.

Synthesis and characterization of a mixed-valence hexadecavanadate cluster with half-open framework

“…4b). According to the similar emission occurs in the tetradecavanadate cluster our previously reported [9], we tentatively assign the origin of the emission to an oxide-to-vanadium charge transition [23]. Thermogravimetric analysis (TGA) in a flow of nitrogen atmosphere was carried out .…”

“…These compounds have an appealing redox chemistry and can serve as redox pools, wherein the electron population can be chemically controlled [2,3]. In the recent years, some high-nuclearity polyoxovanadate clusters ranging from {V 12 } to {V 19 } have been reported [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Compared to the compact structures, the hollow vanadium oxide clusters are more attractive since they can act as host shells for a variety of neutral or anionic guest species which may exert templating effects on the electronic and framework structures of the host metal-oxide shells.…”

A hexa-{MnIII–Schiff-base}-decorated cyclic polyoxovanadate as photocatalyst for dye degradation

“…In such a case, polyoxovanadates are one of the ideal candidates since that many of them can be synthesized in organic solvents at high pH values and usually possess large negative charges [16]. Moreover, if the polyoxovanadates can be in situ assembled in the {metal-Schiffbase}-containing solution, the reaction activity between fresh prepared POMs and metal-Schiff-base units might be further improved, facilitating the combination of new hybrid compounds.…”

Mg7V4O16(OH)2(H2O): A magnesium vanadate with a novel 3D magnesium oxide open framework

“…They are also able to form a large number of polyoxovanadates with abilities to catalyze redox reactions and to act as cathodes in lithium batteries [3][4]. Metal vanadates are also capable to form a great number of structures since vanadium can have several oxidation states and different coordination geometries, such as tetrahedron, square pyramid and octahedron.…”