Výsledky vyhledávání - "Gilbert Herve"

Cation-Directed Synthesis of Tungstosilicates. 2. Synthesis, Structure, and Characterization of the Open Wells−Dawson Anion α-[{K(H2O)2}(Si2W18O66)]15-and Its Transiton-Metal Derivatives [{M(H2O)}(μ-H2O)2K(Si2W18O66)]13-and [{M(H2O)}(μ-H2O)2K{M(H2O)4}(Si2W18O66)]11

Autor: Nathalie Leclerc-Laronze, Jérôme Marrot, Gilbert Herve

Publikováno v: Inorganic Chemistry. 44:1275-1281

The dimer α-[{K(H2O)2}(Si2W18O66)]15- (1), synthesized by reacting K10A-α-[SiW9O34] with two equivalents of H+ in aqueous solution, has been characterized by polarography and 183W NMR spectroscopy. Nine resonance signals have been observed with the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a4e7373edaa65e727891e71f3b94923b
https://doi.org/10.1021/ic0486769

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Cation-Directed Synthesis of Tungstosilicates. 1. Syntheses and Structures of K10A-α-[SiW9O34]·24H2O, of the Sandwich-Type Complex K10.75[Co(H2O)6]0.5[Co(H2O)4Cl]0.25A-α-[K2{Co(H2O)2}3(SiW9O34)2]·32H2O and of Cs15[K(SiW11O39)2]·39H2O

Autor: Jérôme Marrot, Gilbert Herve, Nathalie Laronze

Publikováno v: Inorganic Chemistry. 42:5857-5862

The influence of the nature of alkali metal cations on the structure of the species obtained from the trivacant precursor A-alpha-[SiW(9)O(34)](10-) has been studied. Starting from the potassium salt 1, K(10)A-alpha-[SiW(9)O(34)].24H(2)O, the sandwic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0a38908546aa97dc65233b5d7abd65e0
https://doi.org/10.1021/ic0342752

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Synthesis and X-ray characterization of nickel(II) arsenatotungstate complexes: isolation of an intermediate leading to the formation of a sandwich-type polyoxometalate

Autor: Jérôme Marrot, Gilbert Herve, Pierre Mialane, Alain Mallard

Publikováno v: Inorganica Chimica Acta. 328:81-86

The nickel arsenatotungstate K10[As2W19(H2O){Ni(H2O)}2O67]·18H2O (1) has been synthesized. Due to its instability in water, attempts to obtain crystals of 1 suitable for X-ray diffraction have failed. The stabilization of the [As2W19(H2O){Ni(H2O)}2O

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d70411396f87f7db08bba69e064070ee
https://doi.org/10.1016/s0020-1693(01)00689-2

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About the Keggin Isomers: Crystal Structure of [N(C4H9)4]4-γ-[SiW12O40], the γ-Isomer of the Keggin Ion. Synthesis and 183W NMR Characterization of the Mixed γ-[SiMo2W10O40]n- (n = 4 or 6)

Autor: Andre Teze, Emmanuel Cadot, Virginie Béreau, Gilbert Herve

Publikováno v: Inorganic Chemistry. 40:2000-2004

The tetrabutylammonium γ-dodecatungstosilicate has been crystallized in a 6/1 acetonitrile/water solvent. An X-ray single-crystal analysis was carried out on [N(C4H9)4]4-γ-[SiW12O40] which crystall...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::43ee6d97029029ebeed58564a0ab7e14
https://doi.org/10.1021/ic000864l

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Synthesis, X-ray crystal structure, and EPR study of [Na(H2O)2]2[VO(H2O)5][SiW12O40]·4H2O

Autor: Catherine Marchal-Roch, Andre Teze, Michel Fournier, Gilbert Herve, Hyunsoo So

Publikováno v: Solid State Sciences. 3:329-338

The vanadyl salt [Na(H2O)2]2[VO(H2O)5][SiW12O40]·4H2O has been synthesized in mild conditions by cationic exchanges from dodecasilicotungstic acid. Structural determination and EPR study have been achieved on single crystals. They are tetragonal, sp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4d4e0001543ecdc9d48bd2b5d10aade3
https://doi.org/10.1016/s1293-2558(00)01136-5

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Synthesis and structure of the novel anion [AsMo6O15(OH)3(SO4)3]6–, first example of a reduced molybdo-sulphate cluster

Autor: Catherine Marchal-Roch, Carine Livage, Eddy Dumas, Gilbert Herve

Publikováno v: Comptes Rendus de l'Académie des Sciences - Series IIC - Chemistry. 3:95-100

A novel anion derived from the Anderson structure has been obtained in aqueous acid solution by condensation of three pairs of edge-sharing molybdenum octahedra around a central arsenite. This association forms a hexanuclear ring of Mo(V) with three

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b66e284c304e957cbc4a85c1ac7c322c
https://doi.org/10.1016/s1387-1609(00)00110-9

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A Novel Dimeric Ni-Substituted β-Keggin Silicotungstate: Structure and Magnetic Properties of K12[{β-SiNi2W10O36(OH)2(H2O)}2]·20H2O

Autor: Ulrich Kortz, Samih Isber, Andre Teze, Gilbert Herve, Yves Jeannin

Publikováno v: Inorganic Chemistry. 38:3670-3675

The novel dimeric polyoxometalate [{beta-SiNi(2)W(10)O(36)(OH)(2)(H(2)O)}(2)](12)(-) (1) has been synthesized and characterized by IR spectroscopy, polarography, elemental analysis, thermogravimetric analysis, and magnetic measurements. An X-ray sing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::503c61da396fb29d6b876d3ca2190f56
https://doi.org/10.1021/ic990008d

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A Cubane-Substituted Polyoxoanion: Structure and Magnetic Properties of Cs2[H2PW9Ni4O34(OH)3(H2O)6]·5H2O

Autor: Ulrich Kortz, Gilbert Herve, and André Tézé

Publikováno v: Inorganic Chemistry. 38:2038-2042

The novel polyoxometalate [H2PW9Ni4O34(OH)3(H2O)6]2- (1) has been synthesized and characterized by IR spectroscopy, polarography, elemental analysis, and magnetic measurements. An X-ray single-crystal analysis was carried out on Cs2[H2PW9Ni4O34(OH)3(

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1c02d74aba544d49509d04500a8c90ff
https://doi.org/10.1021/ic981138+

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Analysis of 18;W and 17O NMR chemical shifts in polyoxometalates by extended Hückel mo calculations

Autor: Gilbert Herve, Leonid P. Kazansky, Patrick Chaquin, Michel Fournier

Publikováno v: Polyhedron. 17:4353-4364

The extended Huckel molecular orbital (EHMO) calculations have been carried out using cluster approach to polyoxo anions, i.e. calculations have been done for a single octahedron MO 6 of different symmetry and results have been used to analyze 183 W

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::14f44f4d6fd6d410da8ee9e8c492396c
https://doi.org/10.1016/s0277-5387(98)00218-6

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Synthesis and Structure of the Polyoxoanion [Si2W23O77(OH)]9

Autor: Andre Teze, Gilbert Herve, Monique Michelon

Publikováno v: Inorganic Chemistry. 36:5666-5669

The reaction of tungstate with the γ-decatungstosilicate anion leads to [Si2W23O77(OH)]9-. This anion results from the association of γ-[SiW10O36]8- and γ-[SiW11O39]8- by a (μ-oxo)ditungstic group.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::764807402bbea6fafbd541cd1fa352fd
https://doi.org/10.1021/ic970821d

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