Influence of organic amines on the self-assembly of hybrid polyoxo-molybdenum(v) phosphate frameworks

Abstract

The synthesis and structural characterization of three new polyoxomolybdenum(V) phosphate frameworks have been achieved by using dimeric {Mo 6 } 2 moieties as inorganic building blocks and protonated organic amines as counter ions. The structure-directing role of the organic cations was investigated and it was shown, that the geometry and the rigidity of the amines as well as their hydrogen bonding capabilities influence the formation of layered or chain-like superstructures.

Two new transition-metal complexes (TMCs)-templated three-dimensional supramolecular networks based on tungstovanadophosphates

“…Supramolecular compounds based on POMs have been unexplored in the past decades, though the spherical surface of the POMs gives a better opportunity in forming hydrogen bonds with the organic/inorganic moieties. Recently, a promising approach toward the synthesis of this kind of supramolecular material lies in the proper selection of POMs as building blocks and organic substrates as structure-directing agents [21][22][23][24][25]. However, there are only small amount of reports about transitionmetal complexes (TMCs) as templates or structure-directing agents, and the relationship between POMs and TMCs has also been studied infrequently [26][27][28].…”

Reduced Phosphomolybdates as Molecular Catalysts for Hexavalent Chromium Reduction

“…[1][2][3][4][5] One special metal-oxido cluster in the POM library, the {P 4 Mo V 6 X 31 }(X = O or OH) unit (abbreviated as {P 4 Mo 6 }), has attracted much interest in recent times owing to its unique features in both structure and reduction states. [6][7][8][9][10][11] Compared with previously investigated POM anions, the reduced Mo V centres of {P 4 Mo 6 } exhibit an electronic configuration of d 1 , leading to a greater distribution of electron density throughout the entire cluster. Moreover, the {P 4 Mo 6 } cluster can be synthesised in situ using readily available starting materials in a hydrothermal environment or through a routine synthesis.…”

Two new hydrogen bond-supported supramolecular compounds assembly from tungsten–vanadium polyoxoanions and copper complex fragments

“…However, supramolecular compounds based on POMs have been unexplored in past decades, though the spherical surfaces of the POMs give a better opportunity in forming hydrogen bonds with the organic/ inorganic moieties. In recent years, extensive efforts have been focused on the design and assembly of such kind of supramolecular architectures and a few high-dimensional supramolecular architectures have been synthesized [31][32][33].…”