Strukturna raznolikost kompleksnih spojeva molibdena(VI) s hidrazonskim ligandima

master's thesis

• Title (english): Structural diversity in molybdenum(VI) complexes with hydrazone-based ligands
• Author: Mirna Mandarić
• Mentor: Višnja Vrdoljak (mentor)
• Committee member: Višnja Vrdoljak (predsjednik povjerenstva)
• Committee member: Tajana Preočanin (član povjerenstva)
• Committee member: Sanda Rončević (član povjerenstva)
• Committee member: Marina Cindrić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Chemistry); Zagreb
• Defense date and country: 2018-04-26, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

U okviru ovog diplomskog rada ispitani su uvjeti nastajanja kompleksa molibdena(VI) s
derivatima nikotinhidrazida koji sadrže O i N donorne atome. Provedene su reakcije N'-(2-
hidroksi-3-metoksibenziliden)nikotinhidrazona (H2VanNH) i N'-(2-hidroksi-4-
metoksibenziliden)nikotinhidrazona (H24OMeSalNH) sa spojevima molibdena(VI),
bis(pentan-2,4-dionato)dioksomolibdenom(VI) ([MoO2(acac)2]) i
diklorodioksomolibdenom(VI) ([MoO2Cl2]). Reakcije su provedene u metanolu pri različitim
temperaturama te su dobiveni kompleksi [MoO2(HVanNH)(MeOH)]Cl,
[MoO2(HVanNH)Cl], [MoO2(H4OMeSalNH)Cl] i [MoO2(4OMeSalNH)(MeOH)] (α forma).
Reakcijom [MoO2(HVanNH)Cl] s Et3N priređen je koordinacijski polimer [MoO2(VanNH)]n,
a deprotonacijom [MoO2(H4OMeSalNH)Cl] je dobiven mononuklearni kompleks
[MoO2(4OMeSalNH)(MeOH)] (β forma). Reakcija provedena u solvotermalnim uvjetima pri
110 °C rezultirala je nastajanje polinuklearnog spoja [MoO2(4OMeSalNH)]n. Dobiveni
produkti okarakterizirani su na osnovi podataka IR spektroskopije, klasične kemijske analize i
termičke analize. Postojanje samo jedne faze potvrđeno je usporedbom difraktograma praha.

Abstract (english)

In this Diploma thesis the synthesis conditions and formation of molybdenum(VI) complexes with
nicotinic hydrazide derivatives containing O and N donor atoms were investigated. Reactions of
N'-(2-hydroxy-3-methoxybenzilidene)nicotinhydrazone (H2VanNH) and N'-(2-hydroxy-4-
methoxybenzilidene)nicotinhydrazone (H24OMeSalNH) with molybdenum(VI) compounds
bis(pentane-2,4-dionato)dioxomolybdenum(VI) ([MoO2(acac)2]) and
dichlorodioxomolybdenum(VI) ([MoO2Cl2]) were carried out. Complexes
[MoO2(HVanNH)(MeOH)]Cl, [MoO2(HVanNH)Cl], [MoO2(H4OMeSalNH)Cl] and
[MoO2(4OMeSalNH)(MeOH)] (α form) were obtained when reactions were carried out in
methanol at various temperatures,. The coordination polymer [MoO2(VanNH)]n was prepared
upon reaction [MoO2(HVanNH)Cl] with Et3N, whereas the mononuclear complex
[MoO2(4OMeSalNH)(MeOH)] (β form) was prepared by deprotonation of
[MoO2(H4OMeSalNH)Cl]. This reaction performed under solvothermal conditions at 110 °C
yielded the polynuclear [MoO2(4OMeSalNH)]n complex. The obtained complexes were
characterized by IR spectroscopy, chemical analysis and thermal analysis. The existance of only
one phase was confirmed by comparison of the PXRD patterns.

• Keywords: hidrazoni; kompleksi molibdena(VI); koordinacijski polimeri
• Keywords (english): hydrazones; molybdenum(VI) complexes; coordination polymers
• Language: croatian
• URN:NBN: urn:nbn:hr:217:005767
• 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: 2020-04-17
• Created on: 2018-05-07 13:29:17