In this thesis, five products were prepared by reacting different starting nickel(II) compounds (Ni(CH$_3$COO)$_2$·4H$_2$O, NiCO$_3$, NiSO$_4$·6H$_2$O, NiCl$_2$·6H$_2$O, and Ni(NO$_3$)$_2$·6H$_2$O) with trans-ferulic acid and nicotinamide. The reactions were carried out in a mixture of ethanol and deionized water, with the molar ratio of Ni$^{2+}$ to the two ligands of 1 : 2 : 2. The products were characterized by CHN elemental analysis, infrared vibrational spectroscopy, electronic (UV–Vis–NIR) spectroscopy, and magnetic measurements. The CHN analysis results and the similarity of the IR and electronic spectra indicate that the same or a compositionally very similar coordination compound was obtained in all five syntheses, for which the formula Ni(C$_{10}$H$_9$O$_4$)$_2$(C$_6$H$_6$N$_2$O)2(H$_2$O)$_x$ (x = 2 or 3) was proposed. Magnetic measurements showed paramagnetic behaviour of the products and support the proposed octahedral coordination environment of Ni$^{2+}$. Since suitable single crystals could not be isolated, the exact number of water molecules and the coordination geometry of Ni$^{2+}$ could not be conclusively determined.
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