Strukturna raznolikost kompleksnih spojeva vanadija(V) s hidrazonskim ligandima

master's thesis

• Title (english): Structural diversity in vanadium(V) complexes with hydrazone-based ligands
• Author: Josipa Hajduković
• Mentor: Višnja Vrdoljak (mentor)
• Committee member: Višnja Vrdoljak (predsjednik povjerenstva)
• Committee member: Iva Juranović Cindrić (član povjerenstva)
• Committee member: Ines Primožič (član povjerenstva)
• Committee member: Jana Pisk (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Chemistry); Zagreb
• Defense date and country: 2020-02-28, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

Sintetizirano je osam novih vanadijevih(V) kompleksa s hidrazonskim ligandima koji sadrže
O i N donorne atome. Kompleksi su dobiveni reakcijom hidrazona H2VIH (N''-(2-hidroksi-3-
metoksibenziliden)izonikotinhidrazon) i H24OMeSIH (N''-(2-hidroksi-4-metoksibenziliden) -
izonikotinhidrazon) s dva spoja vanadija, vanadil acetilacetonatom i amonijevim vanadatom,
u dva otapala, metanolu i etanolu, pri različitim reakcijskim uvjetima. Uočena je velika
strukturna raznolikost dobivenih kompleksa vanadija(V), gdje su na metalni centar
hidrazonski ligandi vezani preko O,N,O donornih atoma. U reakciji s ligandom H2VIH
dobiveni su kompleksi [VO(VIH)(MeO)]4, [VO(VIH)(EtO)]4, [VO2(HVIH)]·2H2O i
[VO2(HVIH)]·0,5H2O, dok su s ligandom H24OMeSIH dobiveni kompleksi
[VO(4OMeSIH)(MeO)(MeOH)], [VO(H4OMeSIH)-O-VO(MeO)(4OMeSIH)],
[VO2(H4OMeSIH)] i [VO(4OMeSIH)(EtO)]. Molekulske i kristalne strukture svih
kompleksa odreĎene su rentgenskom strukturnom analizom na monokristalnom uzorku. Svi
kompleksi dodatno su okarakterizirani termogravimetrijskom analizom i difrakcijom
rentgenskog zračenja na polikristalnom uzorku.

Abstract (english)

Eight new vanadium(V) compexes with hydrazone-based ligands containing O and N donor
atoms were synthesized. Complexes were obtained by the reaction of hydrazones H2VIH (N''-
(2-hydroxy-3-methoxybenzylidene)isonicotinhydrazone) and H24OMeSIH (N''-(2-hydroxy-4-
methoxybenzylidene)isonicotinhydrazone) with two vanadium compounds, vanadyl
acetylacetonate and ammonium vanadate in methanol or ethanol under different reaction
conditions. Structurally different vanadium(V) complexes were obtained with ligands
coordinated via O,N,O donor atoms. In the reaction with H2VIH ligand, complexes
[VO(VIH)(MeO)]4, [VO(VIH)(EtO)]4, [VO2(HVIH)]·2H2O and [VO2(HVIH)]·0,5H2O were
obtained, and with H24OMeSIH ligand [VO(4OMeSIH)(MeO)(MeOH)], [VO(H4OMeSIH)-
O-VO(MeO)(4OMeSIH)], [VO2(H4OMeSIH)] and [VO(4OMeSIH)(EtO)]. The molecular
and crystal structure of the complexes were determined by the single crystal X-ray diffraction
method. All complexes were also characterized by termogravimetric analysis and X-ray
diffraction on a polycrystalline sample.

• Keywords: hidrazonski ligandi; kompleksi vanadija(V)
• Keywords (english): hydrazone-based ligands; vanadium(V) complexes
• Language: croatian
• URN:NBN: urn:nbn:hr:217:734269
• 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: 2024-02-28
• Created on: 2020-06-19 09:43:07