Abstract: The invention relates to polyoxometalates represented by the formula (An)m+ [Ru2L2(XW11O39)2WO2]m? or solvates thereof, wherein A is a cation, n is the number of the cations, m is the charge of the polyanion, L is a ligand bound to ruthenium and is independently selected from group consisting of water, unsubstituted or substituted arenes, unsubstituted or substituted heteroarenes, unsaturated hydrocarbons, ethers, unsubstituted or substituted allyl, unsubstituted or substituted alkanes, nitriles, carboxylates, peroxides, peracids, phosphines, phosphanes, CO, OH?, peroxo, carbonate, NO3?, NO2?, NO?, NH3, amines, F?, Cl?, Br?, I?, SCN?, NCS?, NCO? and mixtures thereof and X is a heteroatom selected from Si, Ge, B and mixtures thereof, a process for their preparation and their use for the catalytic oxidation of organic molecules.

Abstract: The invention relates to polyoxometalates represented by the formula (An)m+ [M13X8RqOy]m? or solvates thereof, wherein A represents a cation, n is the number of the cations, m is the charge of the polyanion, M represents a transition metal selected from Pd, Pt, Au, Rh, Ir and mixtures thereof, X represents a heteroatom selected from As, Sb, Bi, P, Si, Ge, B, Al, Ga, S, Se, Te and mixtures thereof, and y is the number of oxygen atoms ranging from 32 to 40, a process for their preparation and their use for the catalytic oxidation of organic molecules.

Abstract: The invention relates to polyoxometalates represented by the formula (An)m+ [My(H2O)(p.y)X2W22O74(OH)2]m? or solvates or mixtures thereof, wherein A represents a cation, n is the number of the cations, m is the charge of the polyoxoanion, M represents a transition metal selected from Pd, Pt and mixtures thereof, y is 1, 2, 3 or 4, p is the number of water molecules bound to one M and varies from 3 to 5, and X represents a heteroatom selected from SbIII, BiIII, AsIII, SeIV and TeIV, a process for their preparation and their use for the catalytic oxidation of organic molecules.

Abstract: This invention relates to a Polyoxometalate (POM) represented by the formula: (An)m+[HqM16X8W48O184(OH)32]m? or solvates thereof, wherein: A represents a cation, n is the number of the cations A, m is the charge of the polyoxoanion, q is the number of protons and varies from 0 to 12, M represents a transition metal, and X represents a heteroatom selected from P, As and mixtures thereof. This invention also relates to a process to produce such POMs and to a process for the homogeneous or heterogeneous oxidation of organic substrates comprising contacting the organic substrate with such POMs.

Abstract: The invention relates to supported polyoxometalates represented by the formula (An)m+ [M4(H2O)10(XW9O33)2]m? or solvates thereof, wherein A represents a cation, n is the number of cations, m is the charge of the polyoxoanion, M is a transition metal, and X is an element selected from the group consisting of As, Sb, Bi, Se and Te, characterized in that the polyoxometalate is supported on a solid support selected from the group consisting of Al2O3, MgO, TiO2, ZrO2, SiO2, mesoporous silica, active carbon, diatomite, clays, zeolites, polyoxometalate salts and mixtures thereof, with the proviso that the polyoxometalate salt supports are different from the supported polyoxometalates defined by the above formula, a process for their preparation and their use for the catalytic oxidation of organic molecules.

Abstract: This invention relates to polyoxometalates represented by the formula (An)m+[My(H2O)pXzZ2W18O66]m? or solvates thereof, wherein A represents a cation acting as counterion of the polyanion, n is the number of the cations A, m is the charge of the polyoxoanion, M represents a transition metal selected from Cu, Zn, Pd, Pt and mixtures thereof, y is the number of transition metals M and is a number from greater than 4 to less than 6, p is a number of water molecules and is a number from 0 to 10, X is a halide selected from F, Cl, Br, I and mixtures thereof, z is a number of halides and is a number from 0 to 6 and Z represents a heteroatom selected from SbIII, BiIII, AsIII, SeIV and TeIV. This invention also relates to a method to make polyoxometalates represented by the formula (II): (An)m+[My(H2O)pXzZ2W18O66]m? or solvates thereof, where y is the number of transition metals M and is a number from greater than 4 to less than or equal to 6, and A, n, m, M p, X, z, Z, are as defined for formula (I).

Abstract: The invention relates to polyoxometalates represented by the formula (An)m+[R2(H2O)6X2W20O70]m? or solvates thereof, wherein A represents a cation, n is the number of the cations, m is the charge of the polyoxoanion, and X represents a heteroatom selected from SbIII, BiIII, AsIII, SeIV and TeIV, a process for their preparation and their use for the catalytic oxidation of organic molecules.

Abstract: The invention relates to polyoxometalates represented by the formula (An)m+ [My(H2O)(p.y)X2W22O74(OH)2]m? or solvates or mixtures thereof, wherein A represents a cation, n is the number of the cations, m is the charge of the polyoxoanion, M represents a transition metal selected from Pd, Pt and mixtures thereof, y is 1, 2, 3 or 4, p is the number of water molecules bound to one M and varies from 3 to 5, and X represents a heteroatom selected from SbIII, BiIII, AsIII, SeIV and TeIV, a process for their preparation and their use for the catalytic oxidation of organic molecules.

Abstract: The invention relates to polyoxometalates represented by the formula (An)m+[R2(H2O)6X2W20O70]m? or solvates thereof, wherein A represents a cation, n is the number of the cations, m is the charge of the polyoxoanion, and X represents a heteroatom selected from SbIII, BiIII, AsIII, SeIV and TeIV, a process for their preparation and their use for the catalytic oxidation of organic molecules.

Abstract: The invention relates to supported polyoxometalates represented by the formula (An)m+ [M4(H2O)10(XW9O33)2]m? or solvates thereof, wherein A represents a cation, n is the number of cations, m is the charge of the polyoxoanion, M is a transition metal, and X is an element selected from the group consisting of As, Sb, Bi, Se and Te, characterized in that the polyoxometalate is supported on a solid support selected from the group consisting of Al2O3, MgO, TiO2, ZrO2, SiO2, mesoporous silica, active carbon, diatomite, clays, zeolites, polyoxometalate salts and mixtures thereof, with the proviso that the polyoxometalate salt supports are different from the supported polyoxometalates defined by the above formula, a process for their preparation and their use for the catalytic oxidation of organic molecules.