Istraživanje suodnosa morfologije i mehaničkih svojstava kristala koordinacijskih spojeva cinka(II) s tiocijanatom i derivatima piridina i pirazina

master's thesis

• Title (english): Investigating morphological feature - mechanical property correlation of crystals of zinc(II) coordination compounds with thiocyanate and pyridine and pyrazine derivates
• Author: Luka Šmital
• Mentor: Marijana Đaković (mentor)
• Mentor: Mladen Borovina (komentor)
• Committee member: Marijana Đaković (predsjednik povjerenstva)
• Committee member: Iva Juranović Cindrić (član povjerenstva)
• Committee member: Đani Škalamera (član povjerenstva)
• Committee member: Biserka Prugovečki (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Chemistry); Zagreb
• Defense date and country: 2024-07-17, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

U okviru ovog rada pripravljeni su koordinacijski spojevi cinka(II) i s tiocijanatnim ionima i derivatima piridina (nikotinamid, izonikotinamid, pikolinamid) i pirazina (2-aminopirazin i 2- hidroksipirazin) kako bi se ispitao odziv njihovih jediničnih kristala na primjenu mehaničke sile. Spojevi su pripravljeni klasičnom otopinskom sintezom te im je struktura (molekulska i kristalna) određena iz eksperimenta difrakcije rendgenskog zračenja u monokristalnom (SCXRD) uzorku. Priređeni spojevi su dodatno karakterizirani tehnikom difrakcije rendgenskog zračenja u polikristalnom uzorku (PXRD) i infracrvenom spektroskopijom (tehnikom ATR). Jedinični kristali produkata priređeni su metodom evaporacije iz otopine, odnosno metodom tekućinske difuzije uz primjene različitih otapala. Kristalima koji su bili odgovarajuće morfologije je istražen odziv na primjenu vanjske mehaničke sile i isti je koreliran s mehaničkim odzivom kristala, a u slučaju elastičnog odziva i kvantificiran.

Abstract (english)

In this thesis, coordination compounds of zinc(II) with thiocyanate and pyridine (nicotinamide, isonicotinamide, picolinamide) and pyrazine (2-aminopyrazine, 2-hydroxypyrazine) derivates were prepared in order to examine their single crystal behaviour after applying external mechanical force. The compounds were prepared by means of classical solution synthesis. Their structure (molecular and crystalline) was determined by employing the single-crystal X-ray diffraction method (SCXRD). The compounds were further characterised by utilising infrared spectroscopy (more precisely, attenuated total reflection (ATR)) and the powder X-ray diffraction method (PXRD). Single crystals were obtained through evaporation of the solution, i.e. by means of liquid diffusion. Crystals with specific morphological features were subjected to testing whereby external mechanical force was applied. In the case of crystals which possessed elastic features, the mechanical response of the crystals was quantified.

• Keywords: cink; elastičnost; kristali; vodikova veza
• Keywords (english): crystalls; elasticity; hydrogen bond; zinc
• Language: croatian
• URN:NBN: urn:nbn:hr:217:093962
• Project: Number: IP-2019-04-1242; Title: Od oblika do funkcije: Fleksibilni kristalni materijali s kontroliranim mehaničkim odzivom; Title: From form to function: Mechanically flexible crystalline materials with controllable responses; Acronym: FlexibleCrystals; Leader: Marijana Đaković; Jurisdiction: Croatia; Funder: Hrvatska zaklada za znanost; Funding stream: Research Projects
• Study programme: Title: Graduate university studies in chemistry; specializations in: Graduate university studies in chemistry; Course: Graduate university studies in chemistry; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni/a magistar/magistra kemije (sveučilišni/a magistar/magistra kemije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-10-02 13:11:11