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master's thesis
Kokristalizacija urotropina s donorima halogenske veze
Zagreb: University of Zagreb, Faculty of Science, 2017. urn:nbn:hr:217:546198
Tolj, Davor
University of Zagreb
Faculty of Science
Department of Chemistry

Institutional repository: Repository of the Faculty of Science

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Tolj, D. (2017). Kokristalizacija urotropina s donorima halogenske veze (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:546198

Tolj, Davor. "Kokristalizacija urotropina s donorima halogenske veze." Master's thesis, University of Zagreb, Faculty of Science, 2017. https://urn.nsk.hr/urn:nbn:hr:217:546198

Tolj, Davor. "Kokristalizacija urotropina s donorima halogenske veze." Master's thesis, University of Zagreb, Faculty of Science, 2017. https://urn.nsk.hr/urn:nbn:hr:217:546198

Tolj, D. (2017). 'Kokristalizacija urotropina s donorima halogenske veze', Master's thesis, University of Zagreb, Faculty of Science, accessed 12 January 2025, https://urn.nsk.hr/urn:nbn:hr:217:546198

Tolj D. Kokristalizacija urotropina s donorima halogenske veze [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2017 [cited 2025 January 12] Available at: https://urn.nsk.hr/urn:nbn:hr:217:546198

D. Tolj, "Kokristalizacija urotropina s donorima halogenske veze", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:217:546198

Metadata
TitleKokristalizacija urotropina s donorima halogenske veze
Title (english)Cocrystalization of urotropine with halogen bond donors
AuthorDavor Tolj
MentorDominik Cinčić (mentor)
Committee memberDominik Cinčić (predsjednik povjerenstva)
Committee memberIvana Biljan (član povjerenstva)
Committee memberGordan Horvat (član povjerenstva)
Committee memberVladimir Stilinović (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Chemistry)
Zagreb
Defense date and country2017-02-24, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
U sklopu ovog diplomskog rada je mehanokemijskom sintezom i kristalizacijom iz otopine izučavana mogućnost nastajanja kokristala urotropina s odabranim donorima halogenske veze: pentafluorjodbenzenom, tetrafluor-1,2-dijodbenzenom, tetrafluor-1,4- dijodbenzenom i oktafluor-1,4-dijodbutanom. Pripravljeni kokristali izučavani su metodom difrakcije rentgenskih zraka u praškastom uzorku i razlikovnom pretražnom kalorimetrijom. Za kokristal urotropina i oktafluor-1,4-dijodbutana je metodom difrakcije rentgenskog zračenja u jediničnom kristalu utvrđeno da je pri -123 C i 25 C nesumjerljivo modulirane kristalne strukture. U tim dvama slučajevima se modulacijski val približno poklapa s racionalnim smjerovima rešetke pa su kristalne strukture modelirane kao periodične aproksimacije. Iz satelitskih refleksâ dobiveni su parametri modulacijskog vektora q pri tim dvjema temperaturama. Pri 52 C kristalna struktura kokristala je određena kao centrosimetrična rompska sa neredom u difluormetilenskim skupinama. Molekule urotropina povezuju se s molekulama oktafluor-1,4- dijodbutana I...N halogenskim vezama.
Abstract (english)
This diploma thesis contains a study of mechanochemical and solution cocrystallization of urotropine with select halogen bond donors: pentafluoroiodobenzene, tetrafluoro-1,4-diiodobenzene, tetrafluoro-1,2-diiodobenzene and octafluoro-1,4- diiodobutane. The compounds have been characterized by powder X-ray diffraction and differential scanning calorimetry. Single-crystal X-ray diffraction of the urotropine and octafluoro-1,4- diiodobutane cocrystal at -123 C and 25 C has shown that its crystal structure is incommesurately modulated. The modulation vector q coincided with rational lattice vectors in both cases, so the crystal structures were modeled as periodic approximates. Parameters of the modulation vector have been determined from the sattelite reflection data. At 52 C the crystal structure is not modulated, and was therefore determined as orthorhombic with severe disorder in difluoromethylene groups belonging to octafluoro-1,4-diiodobutane molecules.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:546198
Study programmeTitle: Graduate university studies in chemistry; specializations in: Research programme
Course: Research programme
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra kemije (magistar/magistra kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Embargo expiration date: 2019-02-24
Terms of useLicence In copyright icon
Created on2017-03-13 13:12:14