Identifikacija kompleksnih spojeva lantanoida i aromatskih hidrazona spektrometrijom masa

master's thesis

• Title (english): Identifocation of lanthanide complexes with aromatic hydrazones by mass spectrometry
• Author: Snježana Šarić
• Mentor: Nives Galić (mentor)
• Committee member: Nives Galić (predsjednik povjerenstva)
• Committee member: Biserka Prugovečki (član povjerenstva)
• Committee member: Ines Primožič (član povjerenstva)
• Committee member: Iva Juranović Cindrić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Chemistry); Zagreb
• Defense date and country: 2019-02-27, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

U ovome radu provedena je detaljna karakterizacija kompleksnih spojeva lantanoida (lantana, iterbija i europija) i aromatskih hidrazona izvedenih iz nikotinske kiseline i salicilaldehida te različito supstituiranih benzaldehida (2-hidroksi-3-metoksi- i 2-hidroksi-4-metoksibenzaldehid) u sustavu otapala metanol:voda 1:1 te u acetonitrilu.
Spektri masa snimljeni su uz ionizaciju elektroraspršenjem u pozitivnom načinu rada. Ispitan je utjecaj otapala (metanola i acetonitrila) na ionizaciju kompleksa iterbija i aroilhidrazona. Također je praćena ovisnost intenziteta signala kompleksa s euoropijem o vremenu. Provedena je tandemna spektrometrija masa na odabranim ionima te su na temelju dobivenih rezultata predložene sheme fragmentiranja kompleksnih spojeva.

Abstract (english)

In this work, a detailed characterization of complexes of lanthanides (lanthanum, ytterbium and europium) and aroylhydrazones derived from nicotinic acid and salicylaldehyde, and differently substitued benzaldehydes (2-hydroxy-3-metoxy- and 2-hydroxy-4-metoxybenzaldehyde) in a solvent system methanol:water 1:1 and in acetonitrile was performed.
Electrospray in positive ion mode was used for ionization. The influence of solvent (methanol and acetonitrile) on ionization of ytterbium complexes with aroylhidrazone was investigated. Furthermore, the dependance of signal intensity of europium complex on time was monitored. Tandem mass spectrometry was performed on selected ions, and based on the obtained results, complex fragmentation schemes were proposed.

• Keywords: aroilhidrazoni; kompleksni spojevi; lantanoidi; spektrometrija masa
• Keywords (english): aroylhydrazones; complexes; lanthanoids; mass spectrometry
• Language: croatian
• URN:NBN: urn:nbn:hr:217:364632
• Study programme: Title: 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 resource: Text
• File origin: Born digital
• Access conditions: Open access; Embargo expiration date: 2020-02-27
• Created on: 2019-03-20 16:50:47