Molibdenski kompleksi s derivatima hidrazida mravlje kiseline

master's thesis

• Title (english): Molybdenum complexes with formic acid hydrazide derivatives
• Author: Silvija Mrkonja
• Mentor: Jana Pisk (mentor)
• Committee member: Jana Pisk (predsjednik povjerenstva)
• Committee member: Davor Kovačević (član povjerenstva)
• Committee member: Adriana Kenđel (član povjerenstva)
• Committee member: Mirta Rubčić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Chemistry); Zagreb
• Defense date and country: 2023-02-22, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

U okviru ovog diplomskog rada pripravljena su dva hidrazonska liganda, H2L1 i H2L2, derivati hidrazida mravlje kiseline i 2-hidroksibenzaldehida, odnosno 2-hidroksi-5-nitrobenzaldehida. Reakcijama [MoO2(acac)2] i odgovarajućeg hidrazonskog liganda, u množinskom omjeru 1 : 1, u odgovarajućem otapalu, pripravljeni su kompleksni spojevi molibdena(VI). Mononuklearni kompleksni spojevi, [MoO2(L1)(MeOH)] i [MoO2(L2)(MeOH)], sintetizirani su iz metanola, uz dodatak piridina. Reakcijama u acetonitrilu sintetizirani su mononuklearni kompleksni spoj, [MoO2(L2)(H2O)]·MeCN te polinuklearni kompleksni spojevi, [MoO2(L1)]n i [MoO2(L2)]n. Hidrazonski ligandi i kompleksni spojevi karakterizirani su i analizirani razlikovnom pretražnom kalorimetrijom, infracrvenom spektroskopijom te termogravimetrijskom analizom. Difrakcijom rendgenskog zračenja na jediničnom kristalu određene su molekulske i kristalne strukture liganda H2L1 te kompleksnih spojeva [MoO2(L2)(MeOH)] i [MoO2(L2)(H2O)]·MeCN.

Abstract (english)

As part of this diploma thesis, two hydrazone ligands, (H2L1) and (H2L2), derivatives of formic acid hydrazide and 2-hydroxybenzaldehyde or 2-hydroxy-5-nitrobenzaldehyde, were prepared. By reactions of [MoO2(acac)2] and corresponding hydrazone ligand, in 1 : 1 molar ratio, from corresponding solvent, molybdenum(VI) complex compounds were synthesized. Mononuclear complexes, [MoO2(L1)(MeOH)] and [MoO2(L2)(MeOH)] were synthesized from methanol, with pyridine. In reactions with acetonitrile one mononuclear complex compound, [MoO2(L1)(H2O)]·MeCN and two polynuclear complexes, [MoO2(L1)]n and [MoO2(L2)]n, were synthesized. Hydrazone ligands and complexes were characterized and analyzed by differential scanning calorimetry, infrared spectroscopy and thermogravimetric analysis. Molecular and crystal structures of the H2L1ligand and of [MoO2(L2)(MeOH)] and [MoO2(L2)(H2O)]·MeCN complexes were determined by the single crystal X-ray diffraction.

• Keywords: hidrazid mravlje kiseline; hidrazon; molibden(VI); mononuklearni kompleksi; polinuklearni kompleksi
• Keywords (english): formic acid hydrazide; hydrazone; molybdenum(VI); mononuclear complexes; polynuclear complexes
• Language: croatian
• URN:NBN: urn:nbn:hr:217:861351
• 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: Embargoed access; Embargo expiration date: 2025-02-22
• Created on: 2023-03-01 11:38:00