diplomsko delo
Nina Bahčič (Author), Barbara Modec (Mentor)

Abstract

Spremljala sem ponovljivost reakcij [Cu(kinal)2(MeOH)]·MeOH s piperidinom v različnih reakcijskih sistemih. Produkte sem poskušala identificirati z IR-spektroskopijo in praškovno difrakcijo. Pri nižji temperaturi sta izkristalizirala dva produkta, [Cu(kinal)2(Pipe)2] in [Cu(kinal)2(Pipe)2]·2MeCN. Reakcijska zmes, ki vsebuje acetonitril, na sobni temperaturi spremeni barvo, iz modrozelene v rjavordečo. Barvno spremembo opazimo tudi v sistemu s propionitrilom, v sistemu z benzonitrilom se barva v istem reakcijskem času ne spremeni. Ta barvna sprememba najverjetneje pomeni redukcijo bakra(II) ter tudi to, da v reakcijski zmesi ne poteka le enostavna substitucija metanola s piperidinom, temveč tudi druge, bolj zapletene reakcije.

Keywords

koordinacijske spojine;baker(II);kinaldinska kislina;kinaldinatni ion;ligandi;piperidin;rentgenska praškovna difrakcija;infrardeča spektroskopija;diplomske naloge;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [N. Bahčič]
UDC: 546.56:547.82(043.2)
COBISS: 1538313667 Link will open in a new window
Views: 1440
Downloads: 178
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Other data

Secondary language: English
Secondary title: Monitoring the reaction of copper(II) quinaldinata with piperidine
Secondary abstract: Reactions of [Cu(kinal)2(MeOH)]·MeOH with piperidine in different reaction systems were monitored. The products were identified by means of infrared spectroscopy and X-ray powder diffraction. At 4 °C, two products crystallized. Their compositions were [Cu(kinal)2(Pipe)2] and [Cu(kinal)2(Pipe)2]·2MeCN. The reaction mixture containing acetonitrile changes colour at ambient conditions. Its colour changed from blue-green to brown-red. Similar colour change was detected in a system with propionitrile, whereas a system with benzonitrile in the same reaction time retained the initial colour. This colour change most likely suggests reduction of copper(II) and that apart from a substitution of methanol with piperidine other, more complicated reactions are taking place in the reaction mixture.
Secondary keywords: coordination compounds;copper(II);quinaldinic acid;piperidine;X-ray powder diffraction;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000374
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, VSŠ Kemijska tehnologija
Pages: 53 str.
ID: 11216357