Naslov
Supramolecular assembly of oxalatomolybdates controlled by the hydrogen bonding potential of Co(III)-ammine cations

Autori
Cindrić, Marina ; Stilinović, Vladimir ; Rubčić, Mirta ; Medak, Glorija ; Šišak Jung, Dubravka ; Vrdoljak, Višnja ;

Izvornik
Crystengcomm (1466-8033) 20 (2018); 1889-1898

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

Ključne riječi
oxalatomolybdates, macrocations, Co(III) amine complexes

Sažetak
A systematic study of the possibility of controlling the formation of oxalatomolybdate anions by the choice of a counterion and adjustment of pH was presented. Using four CoIII(ammine) macrocations ([Co(NH3)6]3+, [Co(NO2)(NH3)5]2+, [Co(en)3]3+ and [Co(ox) (en)2]+) in acidic aqueous solutions, ten crystalline solids were obtained. They were found to contain a total of six different oxalatomolybdate species, three of which, a cyclic tetramer, [Mo2O4(μ-O)2(ox)2]2 8−, a linear tetramer [Mo4O8(μ- O)3(ox)4(H2O)2]6− and a polymer, [Mo4O11(ox)4(H2O)]n 6n– have not been reported to date. The oxalatomolybdate species found in solids mostly do correspond with the predominant species in solution at the pH of the solution from which they were obtained. Condensation of those species can be correlated with the hydrogen bonding ability of the used macrocation, a complex cation of Co(III).

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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