Gold Complexes Incorporating N-Heterocyclic Carbene and lmidazole-2-thione Ligands

Ahmed Hassoon Mageed

Research output: ThesisDoctoral Thesis

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Abstract

This thesis describes an investigation into the synthesis, structure, spectroscopic and electrochemical properties of a series of new gold complexes bearing N-heterocyclic carbene (NHC) and imidazole-2-thione (IMT) ligands. There were four main areas of focus: (a) oxidative halogenation of dinuclear Au1-NHC complexes derived from azolium cyclophanes, to give Au11 complexes or mixed valence Au1/Au111 complexes; (b) stable Au111 complexes bearing four N-heterocyclic carbene groups, synthesized
directly from KAuCl4 and azolium salts; (c) new cis-Au111-NHC cyanide complexes, formed by reaction of dinuclear Au111-NHC bromide complexes with NaCN; and (d) synthesis of new cyclophane imidazole-2-thione ligands and their complexes with Au1•
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • The University of Western Australia
Supervisors/Advisors
  • Baker, Murray, Supervisor
  • Dorta, Reto, Supervisor
Award date16 Apr 2018
DOIs
Publication statusUnpublished - 2018

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Thiones
Gold
Ligands
Bearings (structural)
Halogenation
Cyanides
Bromides
Electrochemical properties
Salts
carbene

Cite this

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title = "Gold Complexes Incorporating N-Heterocyclic Carbene and lmidazole-2-thione Ligands",
abstract = "This thesis describes an investigation into the synthesis, structure, spectroscopic and electrochemical properties of a series of new gold complexes bearing N-heterocyclic carbene (NHC) and imidazole-2-thione (IMT) ligands. There were four main areas of focus: (a) oxidative halogenation of dinuclear Au1-NHC complexes derived from azolium cyclophanes, to give Au11 complexes or mixed valence Au1/Au111 complexes; (b) stable Au111 complexes bearing four N-heterocyclic carbene groups, synthesized directly from KAuCl4 and azolium salts; (c) new cis-Au111-NHC cyanide complexes, formed by reaction of dinuclear Au111-NHC bromide complexes with NaCN; and (d) synthesis of new cyclophane imidazole-2-thione ligands and their complexes with Au1•",
keywords = "Gold, Heterocyclic, Coordination chemistry, X-ray diffraction, Nuclear magnetic resonance, Photochemical properties",
author = "Mageed, {Ahmed Hassoon}",
year = "2018",
doi = "10.4225/23/5af934ce9e44b",
language = "English",
school = "The University of Western Australia",

}

Gold Complexes Incorporating N-Heterocyclic Carbene and lmidazole-2-thione Ligands. / Mageed, Ahmed Hassoon.

2018.

Research output: ThesisDoctoral Thesis

TY - THES

T1 - Gold Complexes Incorporating N-Heterocyclic Carbene and lmidazole-2-thione Ligands

AU - Mageed, Ahmed Hassoon

PY - 2018

Y1 - 2018

N2 - This thesis describes an investigation into the synthesis, structure, spectroscopic and electrochemical properties of a series of new gold complexes bearing N-heterocyclic carbene (NHC) and imidazole-2-thione (IMT) ligands. There were four main areas of focus: (a) oxidative halogenation of dinuclear Au1-NHC complexes derived from azolium cyclophanes, to give Au11 complexes or mixed valence Au1/Au111 complexes; (b) stable Au111 complexes bearing four N-heterocyclic carbene groups, synthesized directly from KAuCl4 and azolium salts; (c) new cis-Au111-NHC cyanide complexes, formed by reaction of dinuclear Au111-NHC bromide complexes with NaCN; and (d) synthesis of new cyclophane imidazole-2-thione ligands and their complexes with Au1•

AB - This thesis describes an investigation into the synthesis, structure, spectroscopic and electrochemical properties of a series of new gold complexes bearing N-heterocyclic carbene (NHC) and imidazole-2-thione (IMT) ligands. There were four main areas of focus: (a) oxidative halogenation of dinuclear Au1-NHC complexes derived from azolium cyclophanes, to give Au11 complexes or mixed valence Au1/Au111 complexes; (b) stable Au111 complexes bearing four N-heterocyclic carbene groups, synthesized directly from KAuCl4 and azolium salts; (c) new cis-Au111-NHC cyanide complexes, formed by reaction of dinuclear Au111-NHC bromide complexes with NaCN; and (d) synthesis of new cyclophane imidazole-2-thione ligands and their complexes with Au1•

KW - Gold

KW - Heterocyclic

KW - Coordination chemistry

KW - X-ray diffraction

KW - Nuclear magnetic resonance

KW - Photochemical properties

U2 - 10.4225/23/5af934ce9e44b

DO - 10.4225/23/5af934ce9e44b

M3 - Doctoral Thesis

ER -