Solvothermally derived Me2(H2O)4(5SSA)3·DMF and Me2(H2O)4(4NSA)2·DMF: Application as Biginelli reaction catalysts

Andrius Laurikėnas; Fatma Yalçin; Robertas Žilinskas; Ayse Uztetik Morkan; Albinas Žilinskas; Izzet Amour Morkan; Aivaras Kareiva

doi:10.6001/chemija.v30i2.3998

Andrius Laurikėnas
Fatma Yalçin
Robertas Žilinskas
Ayse Uztetik Morkan
Albinas Žilinskas
Izzet Amour Morkan
Aivaras Kareiva

DOI: https://doi.org/10.6001/chemija.v30i2.3998

Keywords: solvothermal synthesis, hybrid organic-inorganic compounds, Biginelli reaction, catalytic activity

Abstract

The solvothermal synthesis between Me(NO₃)_x ∙ yH₂O (Me^x+ = Fe³⁺, Ni²⁺, Mn²⁺, Co²⁺, Cu²⁺) and respectively 4-nitrosalycilic (4NSA) and 5-sulfosalicylic (5SSA) acids produced hybrid organic-inorganic compounds composed of Me^x+ ions and organic fragments which include three different functional groups, carboxylic, hydroxyl and sulfonic, each coordinated to the Me^x+ ions. The phase and chemical composition, microstructure and properties of Me₂(H₂O)₄(5SSA)3·DMF and Me₂(H₂O)₄(4NSA)₂·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.