Sinteza i solvatomorfija ternarnih koordinacijskih spojeva bakra(II) s 2,2'-bipiridinom i L-homoserinom ; Titrimetrija i gimnazijski program nastave kemije

master's thesis

• Title (english): Synthesis and solvatomorphism of ternary coordination compounds of copper(II) with 2,2'-bipyridine and L-homoserine ; Titrimetry and gymnasium chemistry syllabus
• Author: Elena Tančak
• Mentor: Biserka Prugovečki (mentor)
• Mentor: Nenad Judaš (mentor)
• Mentor: Darko Vušak (komentor)
• Committee member: Biserka Prugovečki (predsjednik povjerenstva)
• Committee member: Nenad Judaš (član povjerenstva)
• Committee member: Tajana Begović (član povjerenstva)
• Committee member: Iva Juranović Cindrić (član povjerenstva)
• Committee member: Dubravka Matković-Čalogović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Chemistry); Zagreb
• Defense date and country: 2022-12-19, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

Ovaj diplomski rad sastoji se od dva dijela, istraživačkog i metodičkog. U istraživačkom dijelu
mehanokemijski su sintetizirana tri ternarna koordinacijska spoja bakra(II) s 2,2'-bipiridinom (bipy) i ʟhomoserinom (L-HHser): [Cu(µ-L-Hser)(H2O)(bipy)]2SO4∙2H2O (1∙2H2O), [Cu(µ-LHser)(H2O)(bipy)]2SO4∙3H2O (1∙3H2O) i [Cu(µ-L-Hser)(H2O)(bipy)]2SO4∙4H2O (1∙4H2O). Prilikom
sinteza, ispitan je utjecaj korištenih reaktanata (CuSO4∙xH2O, x = 0, 1 i 5) i tekućine (vode, metanola ili
smjese vode i metanola) na nastajanje određenog hidrata. Svi produkti mehanokemijskih sinteza su
analizirani metodom difrakcije rendgenskog zračenja na polikristalnom uzorku. Spoj 1∙2H2O dodatno
je analiziran infracrvenom sprektroskopijom i termogravimetrijskom analizom. Ispitana je stabilnost
spoja 1∙2H2O pri različitim relativnim vlažnostima zraka i 20 °C.
Metodički dio rada usmjeren je na mogućnost uključivanja titracije u nastavu kemije. Na temelju
analize osnovnoškolskog i srednjoškolskog programa kemije te starih i novih kemijskih
udžbenika, može se reći da u praksi gimnazijske nastave kemije nema izvođenja titracija. Ipak,
uvođenje ove eksperimentalne aktivnosti moglo bi nastavu kemije značajno unaprijediti, jer u sebe
integrira niz ciljanih obrazovnih ishoda. Titracija kao metoda kvantitativne kemijske analize učenicima
pruža širok spektar znanja, vještina i sposobnosti. Stoga je predložen 90-minutni nastavni sat koji se
temelji na strategiji učenja otkrivanjem, a u kojem će učenici ovladati temeljnom idejom
volumetrijske analze.

Abstract (english)

This Diploma thesis consists of two parts, the research and the methodical. In the research part,
three ternary coordination compounds of copper(II) with 2,2'-bipyridine (bipy) and Lhomoserine (L-HHser) were synthesized by mechanochemical methods: [Cu(µ-LHser)(H2O)(bipy)]2SO4∙2H2O (1∙2H2O), [Cu(µ-L-Hser)(H2O)(bipy)]2SO4∙3H2O (1∙3H2O) and
[Cu(µ-L-Hser)(H2O)(bipy)]2SO4∙4H2O (1∙4H2O). During the synthesis, the influence of the
used reactants (CuSO4∙xH2O, x = 0, 1 and 5) and liquid (water, methanol or a mixture of water
and methanol) on the formation of a certain hydrate were investigated. All products of
mechanochemical syntheses were analyzed by the powder X-ray diffraction method. The
compound 1∙2H2O was additionally analyzed by infrared spectroscopy and thermogravimetric
analysis. The stability of the compound 1∙2H2O in atmospheres of different relative humidities
at 20 °C was investigated.
Methodological part of this thesis is focused on involvment of titrations into gymnasium
chemical lessons. Analysis of primary and secondary chemical syllabuses and of old and new
chemical textbooks indicates that titrations are not part of regular gymnasium chemical
teaching. But, introduction of this experimental activity would be beneficial since it integrates
series of targeted educational goals and achievements. Titration as a method of quantitative
chemical analysis engages a wide spectrum of pupil's content knowledge, skills and abilities. A
90-minute lesson is designed that is based on the guided inquiry-learning strategy during which
students will master fundamental ideas of volumetric analysis.

• Keywords: : difrakcija rendgenskog zračenja na polikristalnom uzorku; mehanokemija; ternarni koordinacijski spojevi; titracija; gimnazijska nastava kemije; učenje otkrivanjem
• Keywords (english): mechanochemistry; powder X-ray diffraction; ternary coordination compounds; titration; gymnasium chemical teaching; guided inquiry-learning
• Language: croatian
• URN:NBN: urn:nbn:hr:217:800232
• Study programme: Title: Graduate university studies in chemistry; specializations in: Educational programme; Course: Educational programme; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra edukacije kemije (magistar/magistra edukacije kemije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Embargoed access; Embargo expiration date: 2024-12-19
• Created on: 2023-01-27 14:03:15