Manganove spojine s pirazinojsko kislino

Počervina, Žiga (author), Petriček, Saša (mentor)

Izvedli smo reakcije med mangovim(II) kloridom dihidratom, manganovim(III) acetatom dihidratom in manganovim(II) sulfatom monohidratom s pirazinojsko kislino v topilih: metanol, etanol in acetonitril. Reakcije so potekale pri sobni temperaturi ali pa na oljni kopeli pri višji temperaturi. Kristalizacija je potekla na zraku ali v zaprtem sistemu za kristalizacijo pri nižjem tlaku. Z manganovim(II) kloridom, sulfatom in pirazinojsko kislino nam je uspelo sintetizirati dva kompleksa, [MnCl$_2$(pyzaH)$_2$] in [MnCl$_2$(pyzaH)$_2$]n·2nH$_2$O. Za potek reakcije med manganovim sulfatom in pirazinojsko kislino je bilo potrebno dodati koncentrirano klorovodikovo kislino. Za potrditev nastanka novih kompleksov smo uporabili analizne metode: IR spektroskopija, CHN elementna analiza, termična analiza, rentgenska praškovna analiza in rentgenska strukturna analiza.

• Language: Slovenian
• Keywords: mangan, pirazinojska kislina, koordinacijske spojine
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Year: 2025
• PID: 20.500.12556/RUL-167370
• COBISS.SI-ID: 227668227
• Publication date in RUL: 18.02.2025

Secondary language

• Language: English
• Title: Manganese compounds with pyrazinoic acid

Abstract

We carried out reactions between manganese(II) chloride dihydrate, manganese(III) acetate dihydrate and manganese(II) sulfate monohydrate with pyrazinoic acid in solvents: methanol, ethanol and acetonitrile. The reactions were carried out at room temperature or in an oil bath at a higher temperature. Crystallization was carried out in air or in a closed crystallization system at a lower pressure. With manganese(II) chloride and sulfate, we managed to synthesize two complexes [MnCl$_2$(pyzaH)$_2$] and [MnCl$_2$(pyzaH)$_2$]n·2nH$_2$O. For the reaction of manganese sulfate and pyrazinoic acid it was necessary to add concentrated hydrochloric acid. To confirm the formation of new complexes, we used analytical methods: IR spectroscopy, CHN elemental analysis, thermal analysis, X-ray powder analysis and X-ray structural analysis.

• Keywords: manganese, pyrazinoic acid, coordination compounds