diplomsko delo univerzitetnega študijskega programa I. stopnje
Marcell Gyurkač (Author), Matjaž Kristl (Mentor), Irena Ban (Co-mentor)

Abstract

Namen diplomskega dela je sinteza in karakterizacija manganovih koordinacijskih spojin z različnimi položajnimi izomeri aminopiridinov. Raztopine dvovalentnega mangana z dodatki različnih aminopiridinskih raztopin smo izpostavljali različnim pogojem (hitrost mešanja raztopine, temperatura raztopine, tlak sistema, izbor atmosfere). Testirali smo tudi različne sintetske in kristalizacijske metode za pridobitev končnih produktov. Najprej smo ugotovili v katerih topilih so topni reaktanti, ki vsebujejo mangan. Pri sintezah smo uporabljali tri različne reagente mangana in tri različne aminopiridine. Za raztapljanje reagentov smo uporabili 5 različnih topil Dobljene trdne produkte smo analizirali z rentgenskim praškovnim difraktometrom. Iz analiz teh rezultatov smo prišli do ugotovitve, da deionizirana voda ni primerno topilo za sintezo manganovih kompleksov z aminopiridini, saj imajo molekule vode večjo afiniteto do mangana kot aminopiridinski ligandi. Hkrati smo prišli do ugotovitve, da v fazi izparevanja topila pride do oksidacije oborine v reakcijski mešanici, ki se manifestira v spremembi barve trdnega produkta v temno rjavo. V sklopu raziskav smo sintetizirali dve že znani spojini. Prva je koordinacijska spojina, ki daje sive igličaste kristale, vsebuje dvovalenten mangan in protoniran aminopiridin. Njena formula: [H(2-apy)][MnCl3(H2O)]. Drug produkt ne vsebuje mangana, vsebuje pa protoniran aminopridin. Njegova formula: C5H7N2+·NO3-. Ta spojina tvori rumene igličaste kristale.

Keywords

mangan;aminopiridin;koordinacijske spojine;kompleksi;ligandi;diplomske naloge;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher: [M. Gyurkač]
UDC: 661.871:669.74(043.2)
COBISS: 21479958 Link will open in a new window
Views: 1152
Downloads: 142
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Other data

Secondary language: English
Secondary title: Synthesis and characterization of manganese coordination compounds with aminopyridines
Secondary abstract: The main aim of our study was the synthesis and characterisation of manganese coordination compounds with various substitution isomers of aminopyridines. To the divalent manganese solutions different solutions of aminopyridines were added and exposed to various conditions (stirring velocity of the solution, temperature of the solution, pressure of the system, choice of the atmosphere). Different synthetic and crystallisation methods were also tested to obtain the final products. In the first period of the experimental section the solubilities of different manganese compounds were determined in chosen solutes. For the synthetic step three different manganese compounds and three different aminopyridines were used. 5 different solutes were used for the dissolution of the starting materials. The obtained solid products were analysed on an X-ray powder diffractometer. The results showed that deionised water is not appropriate for the synthesis of manganese complexes with aminopyridines, because water molecules have higher affinity for manganese than the aminopyridine ligands. Furthermore, the investigations indicated that the precipitated product oxidised within the solute evaporation step to form a deep brown solid product. In the scope of our research we managed to synthesize two already known compounds. Firstly, grey needle like crystals were obtained with the molecular formula: [H(2-apy)][MnCl3(H2O)]. The product consists of a divalent manganese anion core and a positively charged 2-aminopyridine cation. The second compound contains no manganese, but likewise the first compound includes a protonated 2-aminopyridine cation as well. It forms yellow needle like crystals.
Secondary keywords: manganese;aminopyridine;coordination compounds;complexes;ligands;
URN: URN:SI:UM:
Type (COBISS): Bachelor thesis/paper
Thesis comment: Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages: VIII, 32 str.
ID: 10928466