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Title:Sinteza bakrovih koordinacijskih spojin s hidroksipiridini : magistrsko delo
Authors:Šturm, Jaka (Author)
Kristl, Matjaž (Mentor) More about this mentor... New window
Ban, Irena (Co-mentor)
Files:.pdf MAG_Sturm_Jaka_2019.pdf (3,11 MB)
 
Language:Slovenian
Work type:Master's thesis/paper (mb22)
Typology:2.09 - Master's Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Namen magistrskega dela je bila sinteza novih bakrovih koordinacijskih spojin s hidroksipiridini ali piridoni v vlogi liganda. Opisali smo štiri uspešne reakcije še ne-znanih koordinacijskih spojin. Produkte smo karakterizirali z različnimi metodami in nedvoumno potrdili z rentgensko monokristalno analizo. Pri reakciji bakrovega(II) acetata monohidrata je bil izoliran dvojedrni produkt 1 s štirimi acetatnimi mostovnimi ligandi: [Cu2(μ-Ac)4(4-pydo)2] ∙ 2 CH3CN. Laktam 4-pydo se je koordiniral v aksialni legi preko kisikovega atoma. Solvat je izven matične raztopine razpadal. Pri reakciji bazičnega bakovega(II) karbonata je bil izoliran produkt 2: [Cu(Ac)2(4-hpy)2(H2O)]. Pri raztapljanju slabo topne bakrove izhodne spojine, je bila ključnega pomena izbira kisline, katere ion se je koordiniral na kovinski center. Vplivala je na tavtomerno ravnotežje liganda, ki se je koordiniral v laktimiski tavtomerni obliki (4-hpy) preko dušikovega atoma. Pri reakcijah bakrovega(II) nitrata trihidrata sta bila izolirana produkta 3 ([Cu(2-pydo)2(NO3)(H2O)2](2-pydo)NO3) in 4 ([Cu(4-pydo)2(NO3)(H2O)2]NO3). Preučili smo različna obnašanja 2-pydo in 4-pydo v primerljivih pogojih – spojini se razlikujeta v koordinacijskem številu, načinu koordinacije nitratnega iona, zunanji koordinacijski sferi in strukturi kristala. Prepoznali smo več različnih načinov vključitve hidroksipiridinov in piridonov v kristalno strukturo koordinacijske spojine: koordinacijska vez, elektrostatske interakcije in nekovalentne interakcije. Za uspešne sinteze je bila ključnega pomena izbira topila glede na izhodno bakrovo spojino.
Keywords:Bakrove(II) koordinacijske spojine, 2-piridon, 4-hidroksipiridin, 4-piridon, vodikove vezi
Year of publishing:2019
Place of performance:Maribor
Publisher:[J. Šturm]
Number of pages:X, 63 str.
Source:Maribor
UDC:661.856.091.3:547.823(043.2)
COBISS_ID:22928406 Link is opened in a new window
NUK URN:URN:SI:UM:DK:DEBNJF6J
License:CC BY-NC-ND 4.0
This work is available under this license: Creative Commons Attribution Non-Commercial No Derivatives 4.0 International
Views:72
Downloads:16
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Categories:KTFMB - FKKT
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Secondary language

Language:English
Title:Synthesis of copper coordination compounds with hydroxypyridines
Abstract:The purpouse of this masters work was to synthesize new copper coordination compounds with hydroxypyridine or pyridone ligands. We described four succesfull reactions of yet unknown coordination compounds. The products were characterized with different methods and undoubtedly confirmed on single-crystal X-ray diffraction. Reaction with copper(II) acetate monohydrate yielded a dimeric product 1 with four acetate bridged ligands: [Cu2(μ-Ac)4(4-pydo)2] ∙ 2 CH3CN. Lactam 4-pydo coordinated in axial position through the oxygen atom. The solvate decomposes out of the mother solution. Reaction with basic copper(II) carbonate yielded product 2: [Cu(Ac)2(4-hpy)2(H2O)]. The selection of acid appears to be a key factor which acts both as solvent for the copper starting compound and as ligand. It also influences the tautomeric equilibrium of the ligand 4-hpy, which consequently coordinated in the lactim tautomeric form through the nitrogen atom. Reactions with copper(II) nitrate trihydrate yielded products 3 ([Cu(2-pydo)2(NO3)(H2O)2](2-pydo)NO3) and 4 ([Cu(4-pydo)2(NO3)(H2O)2]NO3). We described different behaviour of 2-pydo and 4-pydo in comparable conditions – the compounds are different in their coordination number, in the way the nitrate ion coordinates, outer coordination sphere and crystal structure. We recognized different ways the hydroxypyridines and pyridones are included in the crystal structure: coordination bonds, electrostatic interactions and non-covalent interactions. Selection of solvent in consideration of the copper starting compound used was of key importance for succesfull synthesis.
Keywords:copper(II) coordination compounds, hydrogen bonds, 2-pyridone, 4-hydroxypyridine, 4-pyridone


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