Priprava i karakterizacija spojeva nikla(II) s derivatima pirazina

master's thesis

• Title (english): Synthesis and characterization of nickel(II) compounds with substituted pyrazines
• Author: Zorica Kukavica
• Mentor: Željka Soldin (mentor)
• Committee member: Željka Soldin (predsjednik povjerenstva)
• Committee member: Vesna Petrović Peroković (član povjerenstva)
• Committee member: Sanda Rončević (član povjerenstva)
• Committee member: Marijana Đaković (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Chemistry); Zagreb
• Defense date and country: 2017-09-29, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

Istražene su reakcije te su ispitani uvjeti priprave novih kompleksnih spojeva niklova(II) klorida, niklova(II) bromida i niklova(II) jodida s aminopirazinom (NH2-pyz) i klorpirazinom (Cl-pyz). Pripravljeni su sljedeći spojevi [NiCl2(NH2-pyz)4] (1), [NiCl2(NH2-pyz)2]n (2), [NiBr2(NH2-pyz)4] (3),[NiBr2(NH2-pyz)2]n (4), [NiI2(NH2-pyz)2]n (5), [NiCl2(Cl-pyz)2]n (6) i [NiBr2(Cl-pyz)2]n (7). Spojevi su okarakterizirani kemijskom analizom, infracrvenom spektroskopijom, termogravimetrijskom analizom i difrakcijom rentgenskog zračenja na praškastom uzorku. Spoju 1 je rentgenskom strukturnom analizom određena kristalna i molekulska struktura. Vodikove veze diktiraju način slaganja molekula u supramolekulskim strukturama spojeva s aminopirazinom, dok do udruživanja spojeva s klorpirazinom dolazi preko halogenskih veza.

Abstract (english)

The reaction conditions of nickel(II) chloride, nickel(II) bromide and nickel(II) iodide with aminopyrazine and chloropyrazine were investigated. The following complexes were prepared: [NiCl2(NH2-pyz)4] (1), [NiCl2(NH2-pyz)2]n (2), [NiBr2(NH2-pyz)4] (3),[NiBr2(NH2-pyz)2]n (4), [NiI2(NH2-pyz)2]n (5), [NiCl2(Cl-pyz)2]n (6) i [NiBr2(Cl-pyz)2]n (7). Compounds were characterized by chemical analysis, infrared spectroscopy, thermogravimetric analysis and X-ray powder diffraction. Compound 1 was structurally characterized by single crystal X-ray diffraction method. Supramolecular structure of aminopyrazine based complexes rely on hydrogen bonds, while halogen bond acts as main driving force in assembling of chloropyrazine based complexes.

• Keywords: halogenske veze; infracrvena spektroskopija; niklovi(II) spojevi; rentgenska strukturna analiza; termogravimetrijska analiza; vodikove veze
• Keywords (english): crystal structure analysis; halogen bond; hydrogen bond; infared spectroscopy; nickel(II) compounds; ; thermogravimetric analysis
• Language: croatian
• URN:NBN: urn:nbn:hr:217:542460
• 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: 2019-09-29
• Created on: 2017-10-23 14:38:59