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Pregled bibliografske jedinice broj: 1010956

The synthesis, structure and catalytic properties of the [Mo7O24(μ-Mo8O26)Mo7O24]16− anion formed via two intermediate heptamolybdates [Co(en)3]2[NaMo7O24]Cl·nH2O and (H3O)[Co(en)3]2[Mo7O24]Cl·9H2O


Damjanović, Vladimir; Pisk, Jana; Kuzman, Dino; Agustin, Dominique; Vrdoljak, Višnja; Stilinović, Vladimir; Cindrić, Marina
The synthesis, structure and catalytic properties of the [Mo7O24(μ-Mo8O26)Mo7O24]16− anion formed via two intermediate heptamolybdates [Co(en)3]2[NaMo7O24]Cl·nH2O and (H3O)[Co(en)3]2[Mo7O24]Cl·9H2O // Dalton transactions, 48 (2019), 9974-9983 doi:10.1039/C9DT01625B (međunarodna recenzija, članak, znanstveni)


Naslov
The synthesis, structure and catalytic properties of the [Mo7O24(μ-Mo8O26)Mo7O24]16− anion formed via two intermediate heptamolybdates [Co(en)3]2[NaMo7O24]Cl·nH2O and (H3O)[Co(en)3]2[Mo7O24]Cl·9H2O

Autori
Damjanović, Vladimir ; Pisk, Jana ; Kuzman, Dino ; Agustin, Dominique ; Vrdoljak, Višnja ; Stilinović, Vladimir ; Cindrić, Marina

Izvornik
Dalton transactions (1477-9226) 48 (2019); 9974-9983

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Polyoxomolybdates ; Mechanochemical synthesis ; Vapour- assisted aging

Sažetak
Ageing a mixture of sodium molybdate, malonic acid, and tris(ethylenediamine)cobalt(III) chloride using different synthetic routes, namely, solution-based methods at room temperature or 110 °C, and a mechanochemically accelerated vapour-assisted method, yielded the polyoxomolybdate [Co(en)3]5Na [Mo7O24(μ-Mo8O26)Mo7O24]·nH2O (1). The new polyoxomolybdate anion 1 comprised three fragments, namely, two {; ; ; ; ; Mo7O24}; ; ; ; ; units bridged by a {; ; ; ; ; Mo8O26}; ; ; ; ; unit, which were interconnected by the terminal oxygen atoms of MoO6 octahedra and represent a unique structural motif not yet described in the structurally versatile chemistry of polyoxomolybdates (POMos). The ageing reaction was found to occur via a series of intermediates, two of which were isolated and identified as the heptamolybdate coordination polymer [Co(en)3]2[NaMo7O24]Cl·nH2O (2), comprising {; ; ; ; ; Mo7O24}; ; ; ; ; units bridged by a sodium atom, and the heptamolybdate (H3O)[Co(en)3]2[Mo7O24]Cl·9H2O (3). An identical reaction procedure with [Co(C2O4)(en)2]+ instead of [Co(en)3]3+ yielded the orthomolybdate [Co(C2O4)(en)2]2[MoO4]·9H2O (4) and the hydrogen malonate [Co(C2O4)(en)2]C3O4H3 (5). The new polyoxomolybdate [Co(en)3]5Na [Mo7O24(μ-Mo8O26)Mo7O24]·nH2O was also examined as a catalyst for the epoxidation of cyclooctene, and was superior to both heptamolybdate and octamolybdate catalysts over 24 h. The heptamolybdate [Co(NH3)6]2[Mo7O24]·8H2O (6) was isolated as the only reaction product of sodium molybdate and hexaamminecobalt(III) nitrate in the presence of malonic acid using solution-based methods.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekt / tema
HRZZ-IP-2016-06-4221 - Metalosupramolekulske strukture i anorgansko-organski poliokometalatni hibridi (Višnja Vrdoljak, HRZZ)

Ustanove
Medicinski fakultet, Zagreb,
Prirodoslovno-matematički fakultet, Zagreb

Citiraj ovu publikaciju

Damjanović, Vladimir; Pisk, Jana; Kuzman, Dino; Agustin, Dominique; Vrdoljak, Višnja; Stilinović, Vladimir; Cindrić, Marina
The synthesis, structure and catalytic properties of the [Mo7O24(μ-Mo8O26)Mo7O24]16− anion formed via two intermediate heptamolybdates [Co(en)3]2[NaMo7O24]Cl·nH2O and (H3O)[Co(en)3]2[Mo7O24]Cl·9H2O // Dalton transactions, 48 (2019), 9974-9983 doi:10.1039/C9DT01625B (međunarodna recenzija, članak, znanstveni)
Damjanović, V., Pisk, J., Kuzman, D., Agustin, D., Vrdoljak, V., Stilinović, V. & Cindrić, M. (2019) The synthesis, structure and catalytic properties of the [Mo7O24(μ-Mo8O26)Mo7O24]16− anion formed via two intermediate heptamolybdates [Co(en)3]2[NaMo7O24]Cl·nH2O and (H3O)[Co(en)3]2[Mo7O24]Cl·9H2O. Dalton transactions, 48, 9974-9983 doi:10.1039/C9DT01625B.
@article{article, year = {2019}, pages = {9974-9983}, DOI = {10.1039/C9DT01625B}, keywords = {Polyoxomolybdates, Mechanochemical synthesis, Vapour- assisted aging}, journal = {Dalton transactions}, doi = {10.1039/C9DT01625B}, volume = {48}, issn = {1477-9226}, title = {The synthesis, structure and catalytic properties of the [Mo7O24(μ-Mo8O26)Mo7O24]16− anion formed via two intermediate heptamolybdates [Co(en)3]2[NaMo7O24]Cl·nH2O and (H3O)[Co(en)3]2[Mo7O24]Cl·9H2O}, keyword = {Polyoxomolybdates, Mechanochemical synthesis, Vapour- assisted aging} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


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