Preparation and characterization of coordination compounds of zinc with imidazole derivatives

U okviru ovog diplomskog rada istražena je mogućnost nastajanja koordinacijskih spojeva cinka(II) s derivatima imidazola i halogenidima te s imidazolom i jednom od odabranih organskih kiselina (sukcinska, adipinska, pimelinska). U tu svrhu proveden je niz otopinskih i mehanokemijskih sintetskih reakcija. Dobiveni produkti, [ZnX2(1-Meim)2] (1-Meim = 1- metilimidazol; X = Cl, Br (1a,b)); [ZnX2(2-Et-4-Meim)2] (2-Et-4-Meim = 2-etil-4- metilimidazol; X = Cl, Br, I (2a-c)); dva polimorfa [ZnBr2(1-Meim)]n (3a i b); spoj cinka(II) s imidazolom (im) i sukcinskom (4a), adipinskom (4b) i pimelinskom (H2pim), [Zn(im)2(pim)]n (4c) analizirani su difrakcijom rendgenskog zračenja na polikristalnom uzorku i infracrvenom spektroskopijom. Za četiri spoja su priređeni kvalitetni jedinični kristali i određena je kristalna i molekulska struktura metodom difrakcije rendgenskog zračenja na jediničnom kristalu. Mehanokemijskom sintezom priređen je 2a, dok su otopinskom sintezom dobiveni 3a, 3b i 4c. Within this thesis, the possibility of the formation of coordination compounds of zinc(II) with imidazole derivatives and halide ions, and with imidazole and one of the selected organic acids (succinic, adipic, pimelic) was investigated. For this purpose, a series of solution and mechanochemical reactions were performed. The obtained products, [ZnX2(1-Meim)2] (1- Meim = 1- methylimidazole; X = Cl, Br (1a,b)); [ZnX2(2-Et-4-Meim)2] (2-Et-4-Meim = 2- ethyl-4-methylimidazole; X = Cl, Br, I (2a-c)); two polymorphs of [ZnBr2(1-Meim)]n (3a, b); complex of zinc(II) with imidazole (im) and succinic (4a), adipic (4b) and pimelic acid (H2pim), [Zn(im)2(pim)]n (4c), were analyzed by powder X-ray diffraction and infrared spectroscopy. For four compounds single crystals were prepared and the crystal and molecular structure was determined by X-ray diffraction. 2a was synthesized by the mechanochemical method while 3a, 3b and 4c were obtained by solution synthesis.