Sinteza i karakterizacija kompleksnih spojeva molibdena s tridentatnim ONO donorskim ligandima

master's thesis

• Title (english): Synthesis and characterization of molybdenum complexes with tridentate ONO donor ligands
• Author: Matej Kujundžić
• Mentor: Višnja Vrdoljak (mentor)
• Committee member: Višnja Vrdoljak (predsjednik povjerenstva)
• Committee member: Tomica Hrenar (član povjerenstva)
• Committee member: Iva Juranović Cindrić (član povjerenstva)
• Committee member: Jana Pisk (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Chemistry); Zagreb
• Defense date and country: 2021-02-26, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

U ovom diplomskom radu ispitani su uvjeti priprave kompleksnih spojeva molibdena(VI) s tridentatnim ONO donorskim ligandima. Ispitane su reakcije bis(pentan-2,4-dionato)dioksomolibdena(VI) i Nʹ-(2,3-dihidroksibenziliden)-4-hidroksibenzhidrazona (H23OHSal-4HBOH) te Nʹ-(2,4-dihidroksibenziliden)-4-hidroksibenzhidrazona (H24OHSal-4HBOH) u metanolu, etanolu, acetonitrilu i acetonu. Kompleksi su priređeni pomoću klasične otopinske i solvotermalne sinteze. Reakcijom u metanolu, etanolu i acetonu su dobiveni mononuklearni spojevi opće formule [MoO2(3OHSal-4HBOH)(D)] i [MoO2(4OHSal-4HBOH)(D)] (D = metanol, etanol ili voda), od kojih su neki izolirani kao solvati. Reakcijom u acetonitrilu su dobiveni polimeri [MoO2(3OHSal-4HBOH)]n i [MoO2(4OHSal-4HBOH)]n. Reakcijom polimera s metanolom i etanolom nastali su odgovarajući monomeri. Kompleksi molibdena su okarakterizirani pomoću infracrvene spektroskopije, termogravimetrijske i kemijske analize, pomoću difrakcije rentgenskih zraka na polikristalnom uzorku kao i pomoću nuklearne magnetske rezonancije.

Abstract (english)

In this Diploma thesis the reaction conditions to obtain molybdenum(VI) complexes with tridentate ONO donor ligands were investigated. Reactions of N'-(2,3-dihydroxybenzylidene)-4-hydroxybenzhydrazone (H23OHSal-4HBOH) and N'-(2,4-dihydroxybenzylidene)-4-hydroxybenzhydrazone (H24OHSal-4HBOH) with bis(pentane-2,4-dionato)dioxomolybdenum(VI) were carried out by using methanol, ethanol, acetonitrile and acetone as solvents. The complexes were prepared by conventional solution-based and solvothermal synthesis. Reactions in methanol, ethanol and acetone resulted in the formation of mononuclear complexes of the general formulae [MoO2(3OHSal-4HBOH)(D)] and [MoO2(4OHSal-4HBOH)(D)] (D = methanol, ethanol or water), some of which were obtained as solvates. Reactions in acetonitrile resulted in the formation of polymers [MoO2(3OHSal-4HBOH)]n and [MoO2(4OHSal-4HBOH)]n. Transformation of polymers into the corresponding monomers were achieved in methanol and ethanol. The obtained complexes were characterized by infrared spectroscopy, thermogravimetric and chemical analysis, by powder X-ray diffraction and by nuclear magnetic resonance.

• Keywords: hidrazoni; kompleksi molibdena(VI)
• Keywords (english): hydrazones; molybdenum(VI) complexes
• Language: croatian
• URN:NBN: urn:nbn:hr:217:131684
• Project: Number: IP-2016-06-4221; Title: Metalosupramolekulske strukture i anorgansko-organski polioksometalatni hibridi; Title: Metallosupermolecular architectures and inorganic-organic polyoxometalete based hybrides; Acronym: MOLART; Leader: Višnja Vrdoljak; Jurisdiction: Croatia; Funder: HRZZ; Funding stream: IP
• 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: 2023-02-26
• Created on: 2021-03-10 14:23:15