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Spremljanje reakcije bakrovega(II) kinaldinata s piperidinom
Bahčič, Nina (Author), Modec, Barbara (Mentor) More about this mentor... This link opens in a new window

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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.

Language:Slovenian
Keywords:Koordinacijske spojine, baker(II), kinaldinska kislina, piperidin, praškovna difrakcija
Work type:Bachelor thesis/paper (mb11)
Tipology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Technology
Year:2019
COBISS.SI-ID:1538313667 Link is opened in a new window
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Downloads:49
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Secondary language

Language:English
Title:Monitoring the reaction of copper(II) quinaldinata with piperidine
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.

Keywords:Coordination compounds, copper(II), quinaldinic acid, piperidine, X-ray powder diffraction

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