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    Solvothermally derived Me-2(H2O)(4)(5SSA)(3)center dot DMF and Me-2(H2O)(4) (4NSA)(2)center dot DMF: Application as Biginelli reaction catalysts
    (Lietuvos Mokslu Akad Leidykla, 2019) Laurikenas, Andrius; Yalçın, Fatma; Zilinskas, Robertas; Morkan, Ayşe; Zilinskas, Albinas; Morkan, İzzet; Kareiva, Aivaras
    The solvothermal synthesis between Me(NO3)(x)center dot yH(2)O (me(x+) = Fe3+, Ni2+, M2+, Co2+, Cu2+) and respectively 4-nitrosalycilic (4NSA) and 5-sulfosalicylic (5SSA) acids produced hybrid organic-inorganic compounds composed of me- ions and organic fragments which include three different functional groups, carboxylic, hydroxyl and sulfonic, each coordinated to the Mex+ ions. The phase and chemical composition, microstructure and properties of Me-2(H2O)(4)(5SSA)3 center dot DMF and Me-2(H2O)(4)(4NSA)(2)center dot DMF (DMF - dimethylformamide) hybrid compounds were evaluated and discussed. The synthesised materials were characterised by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM) and nuclear magnetic resonance (NMR) spectroscopy. The catalytic properties of the obtained compounds were also investigated.