Utjecaj kompleksa kobalta(III) na nastajanje dekavanadata

master's thesis

• Title (english): The influence of cobalt(III) complex on decavanadate formation
• Author: Lucija Drempetić
• Mentor: Marina Cindrić (mentor)
• Committee member: Marina Cindrić (predsjednik povjerenstva)
• Committee member: Davor Kovačević (član povjerenstva)
• Committee member: Adriana Kenđel (član povjerenstva)
• Committee member: Željka Soldin (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Chemistry); Zagreb
• Defense date and country: 2023-09-14, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

U okviru ovog diplomskog rada ispitan je utjecaj tetraamminoksalatokobaltovog(III) nitrata monohidrata te natrijeva molibdata na nastanak novih polioksometalatnih vrsta. Sintetizirana su četiri nova polioksometalatna spoja, od kojih tri sadrže dekavanadatne anione, dok jedan sadrži molibdovanadatni anion. Ti su spojevi priređeni različitim sintetskim postupcima u otopini kao što su: sinteza pri sobnoj temperaturi, sinteza uz zagrijavanje na temperaturi vrenja smjese i hidrotermalna sinteza te tekućinom potpomognutim mljevenjem uz izlaganje reakcijske smjese vodenoj pari. Svim je priređenim spojevima molekulska i kristalna struktura određena difrakcijom rendgenskog zračenja na monokristalnom uzorku te su okarakterizirani metodom elementne analize i infracrvene spektroskopije, a gdje je to bilo moguće, okarakterizirani su i metodom difrakcije rendgenskog zračenja na polikristalnom uzorku i termičkom analizom.

Abstract (english)

Within this diploma thesis, a study of the influence of tetraammineoxalatocobalt(III) nitrate monohydrate and sodium molybdate on the formation of new polyoxometalate species was examined. Four new complex compounds were synthesized, three of which contain decavanadate anions, while one contains molybdovanadate anion. The mentioned compounds were prepared by different synthetic methods in solution such as: synthesis at room temperature, synthesis with heating at the boiling point of the mixture and hydrothermal synthesis, as well as liquid-assisted grinding with vapour-assisted aging. The molecular and crystal structure of all the prepared compounds was determined by X-ray diffraction on a monocrystalline sample and they were characterized using elemental analysis and infrared spectroscopy, and where possible, they were also characterized by X-ray diffraction on a polycrystalline sample and thermal analysis.

• Keywords: dekavanadati; kobalt(III); kompleksni spojevi; mehanokemijska sinteza potpomognuta tekućinom; molibdovanadati; polioksometalati
• Keywords (english): cobalt(III); complex compounds; decavanadates; liquid-assisted grinding; molybdovanadates; polyoxometalates
• Language: croatian
• URN:NBN: urn:nbn:hr:217:521313
• 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: 2024-09-14
• Created on: 2023-09-22 12:22:31