Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
Australian Journal of Chemistry

Australian Journal of Chemistry

Volume 67 Number 6 2014

CH13639Fungal Metabolites as Pharmaceuticals

Andrew M. Beekman and Russell A. Barrow
pp. 827-843
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This review highlights pharmaceuticals currently used in Australia and New Zealand that have their origins in fungal metabolites, discussing the natural products chemistry and medicinal chemistry leading to their application as pharmaceuticals.

CH13574Alloying Buffer Layers in Colloidal CdSe/ZnS Core/Shell Nanocrystals

Huichao Zhang, Yonghong Ye, Boping Yang, Li Shen, Yiping Cui and Jiayu Zhang
pp. 844-850
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When ZnS shell is overcoated onto CdSe core, some nonradiative defects are formed. The X-ray photoelectron analysis reveals that these defects are induced from the formation of interfacial alloy during the epitaxy process. These defects could be significantly suppressed if the ZnxCd1-xSeyS1-y alloy buffer layer is artificially introduced.

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A combined copper hexacyanoferrate (CuHCF) and ordered mesoporous carbon (OMC)-modified glassy carbon electrode was prepared using electrodeposition techniques. The modified electrode had favourable and highly improved electrocatalytic abilities towards captopril.

CH13663Effects of Different Phases of Cigarette Smoke on Lipid Peroxidation and Membrane Structure in Liposomes

Nadezhda P. Palmina, Elena L. Maltseva, Tatyana E. Chasovskaya, Valery V. Kasparov, Nataliya G. Bogdanova, Valery A. Menshov and Aleksei V. Trofimov
pp. 858-866
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Liposomes are subjected to the gas phase and particulate matter of cigarette smoke, a rich source of free radicals. The lipid peroxidation therein is examined and discussed in terms of reaction intermediates and products. In addition the membrane structure is studied by electron spin resonance spectroscopy using spin probes.

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A series of novel 7-aryl-2-phenyldihydropyrazolo[1,2-a][1,2,4]triazole-1,3,5(2H)-triones have been synthesised using a multicomponent approach. These derivatives were evaluated for their antimicrobial activities, some of which demonstrated good antibacterial and antifungal activities.

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Three metal complexes, [Cu2(pmb) (PPh3)2(Cl)2] (1), [Cu2(pmbb)(CH3CN)2(PPh3)2](BF4)2·2DMF (2), and [Ag2(pmbb)(PPh3)2] (ClO4)2 (3) have been synthesised and characterised. Each complex formed a supramolecular self-assembly, governed by C–H···π and π···π interactions.

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Four isostructural 3D lanthanide frameworks with (3,5)-connected (4·6·8)(4·65·83·10) topological motifs have been isolated by use of a bifunctional ligand. Further, all the polymers show similar thermal behaviour and polymer 1 exhibits an intense characteristic red europium emission in the solid state.

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Two new coordination polymers were successfully constructed by employing 3,5-bis(benzimidazol-1-yl)pyridine and dicarboxylates. Complex 1 possesses a uninodal three-connected hcb Shubnikov hexagonal plane net with {63} topology. Complex 2 features a three-connected topological net with {82·10} topology, resulting in the formation of a rarely reported typical T-shaped molecular bilayer motif.

CH13622Mesoporous Carbon-supported Cu/ZnO for Methanol Synthesis from Carbon Dioxide

Huamei Duan, Yunxia Yang, Ranjeet Singh, Ken Chiang, Steven Wang, Penny Xiao, Jim Patel, David Danaci, Nick Burke, Yuchun Zhai and Paul A. Webley
pp. 907-914
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Well dispersed Cu–ZnO catalysts supported on mesoporous (FDU-15) carbon were synthesised. The novel catalysts were used to directly convert CO2 into methanol and displayed superior performance over a commercial catalyst in terms of activity and turnover frequency.

CH13711Novel and Simple Synthesis of Brominated 1,10-Phenanthrolines

Drahomír Výprachtický, Dana Kaňková, Veronika Pokorná, Ivan Kmínek, Vagif Dzhabarov and Věra Cimrová
pp. 915-921
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The novel synthesis of brominated 1,10-phenanthrolines, previously only synthesised by the complicated multi-step and tedious Skraup method, is reported herein. The 1,10-phenanthroline monohydrate is brominated in the presence of SCl2 and pyridine. The key role of a new catalyst (sulfur dichloride - SCl2) is reported.

CH13717Diffusion Studies of Phenylenediamine Isomers in Water-Monohydric-Alcohol Systems

Dale J. Codling, Gang Zheng, Tim Stait-Gardner and William S. Price
pp. 922-928
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Nuclear magnetic resonance was used to measure the self-diffusion of phenylenediamine isomers in various water-monohydric-alcohol (i.e. methanol, ethanol, 1-propanol, and tert-butanol) solvents. It was found that the resonances of phenylenediamine isomers in a mixture were separable via diffusion, with the separation becoming greater at higher concentration of monohydric-alcohols.

CH14029Reaction of 2-Pyridylmethylthiourea Derivatives with [(en)2Co(OSO2CF3)2]+ Induces Hypodentate Coordination of an Ethylenediamine Ligand

Lee Roecker, Alison Anderson, Aladdin Al-Haddad, Cawas Engineer, Joan Fetty, Charles Kiaza, Nicholas Noinaj, Nathan L. Coker, Jeanette Krause and Sean Parkin
pp. 933-943
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Pyridylmethylthiourea derivatives react with [(en)2Co(OSO2CF3)2]+, forming three coordination isomers. Bonding in a tridentate manner results in the formation of a hypodentate ethylenediamine ligand. Bonding only through the thiourea sulfur and thiourea nitrogen atoms forms two structural isomers, both of which contain ethylenediamine coordinated in the usual manner.

CH14021Influence of Chemically Inert Cations on the Hydrogen-bond Network in the Bray-Liebhafsky Oscillatory Reaction

Dragomir R. Stanisavljev, Ivana Ž. Ljubić and Maja C. Milenković
pp. 944-948
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The effects of different alkali sulfates on the Bray-Liebhafsky (BL) reaction dynamics are investigated by comparing the changes in the oscillograms provoked by the same amount of added sulfates. Larger cations have more impact on the BL reaction mechanism. As cations are not directly involved in chemical reactions, they may influence the reaction mechanism by changing the structure of the surrounding water and hydrogen-bond dynamics. The obtained results support the idea that the extent of water hydrogen bonding plays important role in the BL mechanism.

CH13654Regioselective Multicomponent Sequential Synthesis of Oxa-Aza[3.3.3]propellanes

Abdolali Alizadeh, Fahimeh Bayat and Long-Guan Zhu
pp. 949-952
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The propellane skeletons occupy a privileged place in synthetic chemistry. Most of their synthetic processes are based on the introduction of a third ring on the framework of a fused bicyclic structure. However, only limited approaches to propellanes exist through multicomponent reactions. A sequential four-component approach to oxa-aza[3.3.3]propellanes has been developed.

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A new series of [(NNN)PdCl]X (X = ClO4, Cl) complexes, i.e. mononuclear [LnPdCl]ClO4 (Ln = L1, L2, L3) and binuclear [L4Pd2Cl2]Cl2 containing N′-substituted N,N-di(2-picolyl)amine-based ligands were synthesised and characterised by X-ray crystallography. It showed that the co-ordination geometry around the palladium centre of all complexes was slightly distorted square-planar. The catalytic activity of the PdII complexes for methyl methacrylate polymerisation was investigated.

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