Naslov
Synthetic route influence on the formation of supramolecular Co(III)-Mo(VI) double-complex salts
(Synthetic route influence on the formation of supramolecular Co(III)-Mo(VI) double- complex salts)

Autori
Damjanović, Vladimir ; Pisk, Jana ; Vrdoljak, Višnja ; Stilinović, Vladimir ; Cindrić, Marina

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, znanstveni

Skup
IUPAC Postgraduate Summer School on Green Chemistry

Mjesto i datum
Venecija, Italija, 07.07.2018. - 13.07.2018

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
solution-based synthesis ; liquid-assisted grinding ; cobalt polyoxomolybdates

Sažetak
The employment of different transition metal complexes and organic components along with polyoxometalates in the targeted synthesis and design of novel supramolecular materials having potential applications in the fields of heterogeneous catalysis and magnetism is of current trend in synthetic chemistry. The self- assembly of this inorganic-organic polyoxometalate based hybrids and their crystals formation is predominantly achived by interplay of hydrogen bonding and electrostatic interactions. Our investigation of the reactions between discrete anionic polyoxomolybdates and cationic tris(ethylenediamine)cobalt(III) complex, in the presence of malonic acid, resulted in a series of supramolecular Co(III)-Mo(VI) double- complex salts [Co(en)3]2[NaMo7O24]Cl·9H2O, (H3O) [Co(en)3]2[Mo7O24]Cl·4H2O, [Co(en)3]2[Mo7O24]·5H2O and [Co(en)3]4[Mo22O73]·10H2O (en = ethylenediamine). In order to explore the influenece of the synthetic route on the formation of examined double-complex salts of Co(III) and Mo(VI), their synthesis was performed via both conventional solution-based methods (under room temperature or hydrothermal conditions), liquid assisted mechanochemical grinding (LAG) and aging. To investigate the influence of the nuclearity of starting anionic polyoxomolybdates and role of malonic acid in these reactions, [Co(en)3]3+ macrocation was probed with [MoO4]2–, [Mo6O19]2–, [Mo7O24]6– and [Mo8O26]4– in the presence and without malonic acid. All compounds were charactrized by means of infrared spectroscopy, thermal analysis and X-ray diffraction.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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