ORCID Profile
0000-0002-7555-0635
Current Organisation
University of Tasmania
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Transition metal chemistry | Organometallic chemistry | Inorganic chemistry |
Publisher: American Chemical Society (ACS)
Date: 23-05-2018
Publisher: American Chemical Society (ACS)
Date: 26-07-2019
Publisher: CSIRO Publishing
Date: 2019
DOI: 10.1071/CH19247
Publisher: American Chemical Society (ACS)
Date: 30-12-2021
Publisher: Wiley
Date: 26-05-2021
Abstract: Palladium(II) boronates are recognized as fundamental pre‐transmetalation intermediates in Suzuki–Miyaura cross‐couplings. While these typically transient species have been detected and studied spectroscopically, it is conspicuous that they have never been isolated since this important reaction was discovered over forty years ago. This study reports the synthesis of a family of unprecedented arylpalladium(II) boronates that are, by design, kinetically stable at ambient temperature, both in solution and in the solid state. These properties enabled unambiguous crystallographic confirmation of their structure for the first time and their chemical competence in a Suzuki–Miyaura reaction was demonstrated.
Publisher: American Chemical Society (ACS)
Date: 19-06-2019
Publisher: CSIRO Publishing
Date: 2020
DOI: 10.1071/CH20194
Abstract: An air- and moisture-tolerant alternate synthetic pathway to the preparation of a cationic chelated bis(NHC) methylpalladium(ii) complex, [{(MesIm)2CH2}Pd(Me)(NCMe)][PF6], is described. The pathway involves the isolation of a bis(NHC) AgI complex, [{(MesIm)2CH2}2Ag2][PF6]2, via metallation of the corresponding diimidazolium salt with Ag2O followed by carbene transfer to [(COD)PdBrMe]. This new method avoids a previously reported unstable intermediate that displayed rapid decomposition at room temperature, attaining the targeted cationic methylpalladium(ii) complex in high yield. CO/ethylene copolymerisation catalysis trials are reported showing solvent dependent catalyst lifetime and copolymer yields. Preliminary ethylene insertion studies are also outlined revealing possible pathways leading towards catalyst deactivation.
Publisher: American Chemical Society (ACS)
Date: 17-02-2023
Publisher: American Chemical Society (ACS)
Date: 14-04-2021
Publisher: CSIRO Publishing
Date: 07-07-2021
DOI: 10.1071/CH21061
Abstract: The translation of nanoparticles to useful applications is often hindered by the reliability of synthetic methodologies to reproducibly generate larger particles of uniform size (diameter 20 nm). The inability to precisely control nanoparticle crystallinity, size, and shape has significant implications on observed properties and therefore applications. A series of iron oxide particles have been synthesised and the impact of size as they agglomerate in aqueous media undergoing flow through a capillary tube has been studied. Reaction conditions for the production of large (side length 40 nm) cubic magnetite (Fe3O4) have been optimised to produce particles with different diameters up to 150 nm. We have focussed on reproducibility in synthesis rather than dispersity of the size distribution. A simple oxidative cleavage of the as-synthesised particles surfactant coating transforms the hydrophobic oleic acid coated Fe3O4 to a hydrophilic system based on azelaic acid. The hydrophilic coating can be further functionalised, in this case we have used a simple biocompatible polyethylene glycol (PEG) coating. The ability of particles to either chain, flow, and fully/or partially aggregate in aqueous media has been tested in a simple in-house system made from commercial components. Fe3O4 nanoparticles (60–85 nm) with a simple PEG coating were found to freely flow at a 2 mm distance from a magnet over 3 min at a rate of 1 mL min−1. Larger particles with side lengths of ~150 nm, or those without a PEG coating were not able to fully block the tube. Simple calculations have been performed to support these observations of magnetic agglomeration.
Publisher: Wiley
Date: 19-08-2010
Publisher: American Chemical Society (ACS)
Date: 13-01-2022
DOI: 10.1021/ACS.INORGCHEM.1C02964
Abstract: This report details the synthesis and characterization of a small family of previously unreported, structurally related chromium, molybdenum, tungsten, manganese, and iron complexes bearing N-heterocyclic carbene and carbonyl supporting ligands. These complexes have the general form [ML(CO)
Publisher: American Chemical Society (ACS)
Date: 23-12-2022
DOI: 10.1021/ACS.INORGCHEM.1C03336
Abstract: A range of palladium complexes featuring electronically modified, imidazole-based abnormal N-heterocyclic carbene (aNHC) ligands have been prepared in the hopes of accessing a new class of cationic aNHC ligands electronically distinct from normal NHCs and aNHCs. These palladium complexes represent the first ex les of transition metal-ligated aNHC complexes featuring a cationic moiety adjacent to the abnormal carbene center. It was anticipated that these design principles could facilitate electron transfer between the imidazolinylidene and the cationic heterocycle, thus reducing the electron density at the abnormal carbene center. However, this case study suggests that greater conformational restrictions that allow for heterocycle coplanarity are necessary to achieve significant electron transfer and enable access to a new class of cationic charge-appended aNHCs with unique electronic properties.
Publisher: MDPI AG
Date: 04-12-2018
DOI: 10.3390/CATAL8120620
Abstract: Ongoing research exploring the chemistry of N-heterocyclic carbenes (NHCs) has led to the development and discovery of new NHC subclasses that deviate beyond Arduengo’s prototypical N,N′-disubstituted imidazol-2-ylidene-based structures. These systems continue to enable and extend the fundamental role of NHC ligands in synthesis and catalysis. In this regard, the advent of protic NHCs has garnered particular interest. This derives in part from their applications to the selective preparation of unique molecular scaffolds and their unprecedented bifunctional reactivity, which can be exploited in transition metal-catalyzed processes. In comparison, the synthetic applications of closely related anionic naked NHCs remain rather underexplored. With this in mind, this review highlights the interesting fundamental properties of non-classical anionic naked NHCs, and focuses on their emerging applications in synthesis and catalysis.
Publisher: MyJove Corporation
Date: 07-11-2018
DOI: 10.3791/58195
Abstract: A recently developed pressurized hot water extraction (PHWE) method which utilizes an unmodified household espresso machine to facilitate natural products research has also found applications as an effective teaching tool. Specifically, this technique has been used to introduce second- and third-year undergraduates to aspects of natural products chemistry in the laboratory. In this report, two experiments are presented: the PHWE of eugenol and acetyleugenol from cloves and the PHWE of seselin and (+)-epoxysuberosin from the endemic Australian plant species Correa reflexa. By employing PHWE in these experiments, the crude clove extract, enriched in eugenol and acetyleugenol, was obtained in 4-9% w/w from cloves by second-year undergraduates and seselin and (+)-epoxysuberosin were isolated in yields of up to 1.1% w/w and 0.9% w/w from C. reflexa by third-year students. The former exercise was developed as a replacement for the traditional steam distillation experiment providing an introduction to extraction and separation techniques, while the latter activity featured guided-inquiry teaching methods in an effort to simulate natural products bioprospecting. This primarily derives from the rapid nature of this PHWE technique relative to traditional extraction methods that are often incompatible with the time constraints associated with undergraduate laboratory experiments. This rapid and practical PHWE method can be used to efficiently isolate various classes of organic molecules from a range of plant species. The complementary nature of this technique relative to more traditional methods has also been demonstrated previously.
Publisher: Wiley
Date: 25-05-2022
DOI: 10.1002/AOC.6746
Abstract: This Minireview presents and discusses recent developments in photoactive hotoluminescent N ‐heterocyclic carbene (NHC) transition metal complexes and their viability as catalysts in bond‐forming photocatalysis. Specifically, we summarise key structural motifs adopted by photoactive NHC transition metal complexes and highlight some of their photophysical properties. Representative ex les of their applications as catalysts in bond‐forming photochemical reactions are also showcased presenting the state‐of‐the‐art and future opportunities for this exciting class of NHC transition metal complexes.
Publisher: ARKAT USA, Inc.
Date: 04-09-2022
Publisher: American Chemical Society (ACS)
Date: 06-2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3DT32895C
Abstract: N,N'-Asymmetrically substituted, methylene-linked bis(imidazol-2-ylidene) complexes have been prepared subsequent to a selective synthesis of the bis(imidazolium) salt precursors involving the quarternisation of N-alkyl and -aryl imidazoles with N-halomethyl imidazolium salts. The adaptability of the ligand precursor synthesis is illustrated through access to the N-Me/N'-Mes and N-Mes/N'-2,6-(i-Pr)2Ph systems, leading to the Pd(II) complexes [{(MeIm)(MesIm)CH2}Pd(L)2](n+), L = Cl/I (n = 0) and NCMe (n = 2), and [{(MesIm)[2,6-(i-Pr)2PhIm]CH2}Pd(L)2], L = Cl/I. The dicationic hybrid N,N'-alkyl/aryl complex was inactive in the copolymerisation of ethylene/carbon monoxide, displaying reactivity akin to N,N'-dialkyl analogues.
Publisher: Wiley
Date: 26-05-2021
Abstract: Palladium(II) boronates are recognized as fundamental pre‐transmetalation intermediates in Suzuki–Miyaura cross‐couplings. While these typically transient species have been detected and studied spectroscopically, it is conspicuous that they have never been isolated since this important reaction was discovered over forty years ago. This study reports the synthesis of a family of unprecedented arylpalladium(II) boronates that are, by design, kinetically stable at ambient temperature, both in solution and in the solid state. These properties enabled unambiguous crystallographic confirmation of their structure for the first time and their chemical competence in a Suzuki–Miyaura reaction was demonstrated.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1DT04205J
Abstract: This Perspective presents and discusses a selection of rhenium-catalysed carbon–carbon bond-forming reactions and rhenium-catalysed reaction cascades of allyl alcohol substrates.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3CC00882G
Abstract: This Highlight examines key strategies that have enabled the structural authentication of important species that shed light on fundamental on-cycle intermediates in transition-metal-catalysed cross-couplings.
Publisher: Elsevier BV
Date: 11-2018
Publisher: CSIRO Publishing
Date: 2018
DOI: 10.1071/CH18233
Abstract: This highlight article focuses on some seminal discoveries in organopalladium(iv) chemistry and the implications and notable applications of these findings in contemporary palladium catalysis and in particular C–H activation.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2CE01643E
Abstract: Crystal structures of mono- and di-2-bromoimidazolium salts of bromide, hexafluorophosphate, or double salts of the two, have indicated a tendency for disorder in the absence of the bromide anion as a halogen bond acceptor.
Publisher: American Chemical Society (ACS)
Date: 22-03-2023
Publisher: Wiley
Date: 13-10-2023
Start Date: 12-2024
End Date: 12-2027
Amount: $417,237.00
Funder: Australian Research Council
View Funded Activity