Istraživanje utjecaja mono- i dikarboksilnih kiselina na nastajanje polioksomolibdata

doctoral thesis

• Title (english): Study of the influence of mono- and dicarboxylic acids on the formation of polyoxomolybdates
• Author: Dino Kuzman
• Mentor: Marina Cindrić (mentor)
• Mentor: Vladimir Stilinović (komentor)
• Committee member: Dominik Cinčić (predsjednik povjerenstva)
• Committee member: Ivan Halasz (član povjerenstva)
• Committee member: Danijela Ašperger (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Chemistry); Zagreb
• Defense date and country: 2024-11-29, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry
• Universal decimal classification (UDC): 54 - Chemistry. Crystallography. Mineralogy

Abstract

U sklopu ove disertacije provedeno je istraživanje utjecaja sintetskih uvjeta na nastajanje izo- i heteropolioksomolibdata (POMo). Za pripravu POMo korišten je anion [MoO4]2– te dva kompleksna kobaltova(III) kationa – [Co(C2O4)(NH3)4]+ i [Co(CO3)(NH3)4]+. Reakcije su provedene u vodenoj otopini (pri sobnoj temperaturi, pri povišenoj temperaturi te pri povišenoj temperaturi i tlaku) i u čvrstom stanju (mljevenje potpomognuto malom količinom tekućine uz izlaganje reakcijske smjese vodenoj pari). Istraživan je utjecaj dodatka mono- i dikarboksilnih kiselina (mravlja, octena, propionska, oksalna, malonska i jantarna) i pH te prekursora heteroatoma (kroma, kobalta, nikla, bakra, aluminija, silicija, germanija i telurija) na nastanak POMo. Dobiveno je 26 novih spojeva koji su identificirani i okarakterizirani na temelju elementne, termičke (TG), spektroskopske (ATR-IR) i rendgenske (PXRD) analize. Molekulska i kristalna strukutra 25 priređenih spojeva određena je difrakcijom rendgenskog zračenja na jediničnom kristalu.

Abstract (english)

As part of this dissertation, the influence of synthetic conditions on the formation of iso- and heteropolyoxomolybdates (POMo) was investigated. [MoO4]2– anion and two complex cobalt(III) cations – [Co(C2O4)(NH3)4]+ and [Co(CO3)(NH3)4]+ were used for the preparation of POMo. The reactions were carried out in aqueous solution (at room temperature, at elevated temperature and at elevated temperature and pressure) and in the solid state (grinding assisted by a small amount of solvent and exposing the reaction mixture to water vapor). The influence of the addition of mono- and dicarboxylic acids (formic, acetic, propionic, oxalic, malonic and succinic) and pH as well as heteroatom precursors (chromium, cobalt, nickel, copper, aluminum, silicon, germanium and tellurium) on the formation of POMo was investigated. 26 new compounds were obtained, which were identified and characterized based on elemental, thermal (TG), spectroscopic (ATR-IR) and X-ray (PXRD) analysis. The molecular and crystal structure of 25 prepared compounds was determined by X-ray diffraction on a single crystal.

• Keywords: izopolioksomolibdati; heteropolioksomolibdati; kompleksi kobalta(III); rendgenska strukturna analiza; termogravimetrijska analiza
• Keywords (english): isopolyoxomolybdates; heteropolyoxomolybdates; cobalt(III) complexes; X-ray structure analysis; thermogravimetric analysis
• Language: croatian
• URN:NBN: urn:nbn:hr:217:663950
• Promotion: 2024
• 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: Hrvatska zaklada za znanost; Funding stream: Research Projects
• Study programme: Title: Doctoral study; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica u području prirodnih znanosti (doktor/doktorica u području prirodnih znanosti)
• Type of resource: Text
• Extent: XXXV, 117 str. ; 30 cm
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-12-13 12:05:53