Kinetika dimerizacije monomera i disocijacije dimera p-halogennitrozobenzena u čvrstom stanju

master's thesis

• Title (english): Kinetics of dimerization of monomers and dissociation of dimers of p-halogenonitrosobenzenes in solid state
• Author: Nikolina Lešić
• Mentor: Ivana Biljan (mentor)
• Committee member: Ivana Biljan (predsjednik povjerenstva)
• Committee member: Tajana Preočanin (član povjerenstva)
• Committee member: Snežana Miljanić (član povjerenstva)
• Committee member: Hrvoj Vančik (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Chemistry); Zagreb
• Defense date and country: 2018-02-23, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

U ovom radu je istražena kinetika reakcija dimerizacije p-jod- i p-klornitrozobenzena te
disocijacije E-dimera p-jodnitrozobenzena u čvrstom stanju. p-Jod- i p-klornitrozobenzen
pripravljeni su oksidacijom odgovarajućih amino derivata mehanokemijski odnosno u otopini.
E-dimer p-jodnitrozobenzena pripravljen je kristalizacijom iz otopine. Kinetika dimerizacije
p-jod- i p-klornitrozobenzena istražena je nakon fotodisocijacije dimera u KBr pastili pri
kriogenim uvjetima. Također je istražena mogućnost dimerizacije p-klornitrozobenzena
nakon kriogene depozicije para monomera na pločicu cezijeva jodida. Kinetike reakcija
dimerizacije i disocijacije praćene su pri različitim temperaturama vremenski razlučenom
IR spektroskopijom. Iz temperaturne ovisnosti koeficijenata brzina reakcija određeni
su aktivacijski parametri za reakciju dimerizacije monomera i disocijacije dimera phalogennitrozobenzena.

Abstract (english)

In this work, kinetics of dimerization reactions of p-iodo- and p-chloronitrosobenzene and
dissociation of E-dimer of p-iodonitrosobenzene in solid state were studied. p-Iodo- and
p-chloronitrosobenzene were prepared by oxidation of corresponding amino derivatives
by mechanochemical synthesis and in a solution. E-dimer of p-iodonitrosobenzene was
prepared by crystallization from the solution. Kinetics of dimerization of p-iodo- and pchloronitrosobenzene
was investigated after photodissociation of dimers in KBr pellet under
cryogenic conditions. In addition, the possibility of dimerization of p-chloronitrosobenzene
after cryogenic deposition of monomer molecules on the cesium iodide surface was studied.
Kinetics of dimerization and dissociation reactions were followed at different temperatures by
using time-resolved IR spectroscopy. From the temperature dependence of the reaction rate
constants, the activation parameters for the reaction of dimerization of monomers and
dissociation of dimers of p-halogenonitrosobenzenes were estimated.

• Keywords: aromatski C-nitrozo spojevi; dimerizacija; disocijacija; kinetika; ĉvrsto stanje; p-halogennitrozobenzeni
• Keywords (english): aromatic C-nitroso compounds; dimerization; dissociation; kinetics; solid state; p-halogenonitrosobenzenes
• Language: croatian
• URN:NBN: urn:nbn:hr:217:792191
• 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: 2019-02-23
• Created on: 2018-03-06 08:50:56