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Sammanfattning

The synthesis and structural determination of three new heterometallic molybdenum complexes, one with cobalt and two with nickel and two of these with beta-diketonate ligands and one with amino alcohol ligands, are presented. The reaction of cobalt acetylacetonate with [MoO(OMe)(4)] provides [Co2Mo2O2(acac)(2)(OMe)(10)] (1) and [MoO(acac)(OMe)(3)] (4), and the reaction of nickel acetylacetonate with [MoO(OMe)(4)] provides [Ni2Mo2O2(acac)(2)(OMe)(10)] (2) and 4. The reaction of [Ni(ORN)(2)] (R-N = CHMeCH2NMe2) with [MoO(OMe)(4)] yields [Ni2Mo2O2(ORN)(2)(OMe)(10)] (3). The two new oxomolybdenum complexes undergo ether elimination upon storage to give the corresponding dioxo complexes [MoO2(acac)(OMe)](2) (5) and [MoO2(ORN) (OMe)](2) (6). Compounds 3 and 4 could also be obtained from the reaction of'stoichiometric amounts of Hacac with [MoO(OMe)(4)] and [MoO2(OMe)(2)], respectively. The local structure around the nickel atom in compound 2 in solution and compound 3 in the solid state and in toluene/hexane solution has been determined by means of EXAFS spectroscopy. The complexes are intended to be used as single-source precursors, which are attractive in coatings and for the preparation of mesoporous materials; its application for the synthesis of nickel molybdate by sol-gel processing is therefore reported. The oxide material obtained from 3 displays a uniform grain size and a large surface area. ((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)

Nyckelord

cobalt molybdate; EXAFS; heterogeneous catalysis; materials; nickel molybdate; sol-gel processes

Publicerad i

European Journal of Inorganic Chemistry
2006, nummer: 7, sidor: 1413-1422
Utgivare: WILEY-V C H VERLAG GMBH

SLU författare

UKÄ forskningsämne

Oorganisk kemi

Publikationens identifierare

  • DOI: https://doi.org/10.1002/ejic.20500811

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/8969