Produkti reakcije med nitrilom in aminom v prisotnosti cinkovega(II) sulfata(VI)

Sever, Anja (author), Modec, Barbara (mentor)

Pri eksperimentalnem delu magistrske naloge smo preučevali reakcijski sistem, ki ga predstavljajo cinkov(II) sulfat(VI) heptahidrat, pikolinska kislina, piperidin, acetonitril in metanol. Produkt, ki nastane po 24-urnem segrevanju pri 105 °C v avtoklavu, je [Zn(NH3)4]SO4·2H2O. Zanimal nas je vpliv reagentov na naravo produkta. V ta namen smo acetonitril zamenjali s propionitrilom, piperidin z morfolinom, pikolinsko kislino pa s pirazinojsko kislino ali kinaldinsko kislino. Iz spremenjenih reakcijskih sistemov smo pridobili [Zn(quin)2(NH3)], [Zn(quin)2(pipeam)]·CH3CN, (morphH)(NH4)SO4 in (pipeH)(propioamH)SO4. V drugem delu je predstavljen eksperiment Infrardeči spektri spojin s tetraamincinkovim(II) ionom. Pri mnogih v eksperimentalnem delu izvedenih reakcijah kot produkt nastane [Zn(NH3)4]SO4·2H2O. Slednja spojina ima enostaven, vendar zanimiv infrardeči spekter. Poznanih je kar nekaj spojin z ionom [Zn(NH3)4]2+ in tudi njihovi infrardeči spektri so dobro razloženi. Z izbranimi [Zn(NH3)4]2+ spojinami smo oblikovali eksperiment, ki bi ga lahko izvajali študentje prvostopenjskega programa Kemija v okviru vaj pri predmetu Spektroskopija. Zadnji del magistrske naloge je umestitev v učni načrt kemije za gimnazije. Predstavljeni sta pripravi na dve učni uri. Prva je na temo računanja izkoristka pri kemijski reakciji, druga na temo koordinacijskih spojin z amonijakom.

• Language: Slovenian
• Keywords: koordinacijska kemija, cinkove(II) spojine, infrardeča spektroskopija, tetraamincinkov(II) ion
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Year: 2023
• PID: 20.500.12556/RUL-146825
• COBISS.SI-ID: 158703619
• Publication date in RUL: 14.06.2023

Secondary language

• Language: English
• Title: Products of the nitrile and amine reaction in the presence of zinc(II) sulphate(VI)

Abstract

In the experimental part of the masters thesis, a reaction system consisting of zinc(II) sulphate(VI) heptahydrate, picolinic acid, piperidine, acetonitrile and methanol was studied. A product that forms upon a 24-hour long heating in autoclave at 105 °C is [Zn(NH3)4]SO4·2H2O. We were interested in the influence of the reagents over the nature of the product. Therefore acetonitrile was replaced with propionitrile, piperidine with morpholine and picolinic acid with pyrazinoic acid or quinaldinic acid. Thus modified reaction systems afforded several other products: [Zn(quin)2(NH3)], [Zn(quin)2(pipeam)]·CH3CN, (morphH)(NH4)SO4 and/or (pipeH)(propioamH)SO4. The second part of the thesis presents a laboratory experiment titled Infrared spectra of the [Zn(NH3)4]2+ compounds. Several of the above mentioned reactions resulted in [Zn(NH3)4]SO4·2H2O. The latter compound has a simple, yet interesting spectrum. Several other compounds containing the [Zn(NH3)4]2+ ion are known. Their infrared spectra have already been interpreted. Selected [Zn(NH3)4]2+ compounds form part of a laboratory experiment which could be performed within Spectroscopy, a course that is attended by students of a first-cycle study program Chemistry. The last part of the masters thesis is its placement in the chemistry curriculum for high schools. There are instructions for the preparation of two lessons. The first one is about the yield of a chemical reaction and second about coordination compounds with ammonia.

• Keywords: coordination compounds, zinc(II) compounds, infrared spectroscopy, tetramminezinc(II) ion