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

Australian Journal of Chemistry

Volume 69 Number 5 2016

Professor Brice Bosnich In Memoriam

CH15433Antimicrobial Properties of Mono- and Di-fac-rhenium Tricarbonyl 2-Pyridyl-1,2,3-triazole Complexes

Sreedhar V. Kumar, Warrick K. C. Lo, Heather J. L. Brooks, Lyall R. Hanton and James D. Crowley
pp. 489-498
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A family of mono- and di-fac-rhenium tricarbonyl 2-pyridyl-1,2,3-triazole complexes with different aliphatic and aromatic substituents were synthesized in good-to-excellent yields. The complexes were tested for antimicrobial activity in vitro against both Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) microorganisms. Several of the cationic complexes displayed activity against Staphylococcus aureus, but the minimum inhibitory concentrations for all the complexes were modest (i.e. 16–1024 µg mL–1).

CH15577Investigation of Functional Group Effects on Palladium Catalysed Asymmetric P–H Addition

Xi-Rui Li, Renta Jonathan Chew, Yongxin Li and Pak-Hing Leung
pp. 499-504
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The pincer catalysed asymmetric P–H addition of diphenylphosphine to 3-benzylidene-2,4-pentadione is herein reported. Albeit successful in catalysing a series of similar substrates, unexpected chelation of the dione substrate to the palladacycle catalyst resulted in inactivation of the catalyst with adjacent coordination sites. Protected phosphine adducts were isolated and characterised.

CH15693X-Ray Structures and Dynamic Solution Behaviours of Five-Coordinate Nickel(II) Complexes Containing Di- and Tritertiary Arsine Ligands

David A. McMorran, Michael G. Fitzpatrick, Robert G. Cunninghame, Alison J. Downard, Ward T. Robinson and Lyall R. Hanton
pp. 512-523
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Nickel(II) complexes containing two tritertiary arsine ligands are found to be five-coordinate in the solid state but undergo a novel fluxionality in solution whereby all six arsine donors contribute to the coordination sphere. Related complexes containing two ditertiary arsine ligands and one or two halides also show that, where a potential sixth donor exists, dynamic solution behaviours operate to utilise it in bonding.

CH15701Self-Assembly of Square-Planar Halide Complexes of Trimethylphosphine-Stabilized Diphenyl-Arsenium, -Stibenium, and -Bismuthenium Hexafluorophosphates

J. Wolfram Wielandt, Simon Petrie, Nathan L. Kilah, Anthony C. Willis, Rian D. Dewhurst, Ferdinand Belaj, Andreas Orthaber, Robert Stranger and S. Bruce Wild
pp. 524-532
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Square-planar halide complexes with four trimethylphosphine-stabilized diphenyl-stibenium or -bismuthenium ions surrounding a central halide ion in discrete centrosymmetrical structures have been prepared. The structures are stabilized by electrostatic interactions between the halide and four stibenium or -bismuthenium cations, as well as four edge-to-face phenyl–phenyl embraces above and below the plane of the main group elements.

CH15697Unique Occurrence of Cationic and Anionic Bis-1,2-diaminocyclohexane Copper(II) Units in a Double Complex Salt

Norman Kelly, Marco Wenzel, Thomas Doert, Kerstin Gloe, Jan J. Weigand, Leonard F. Lindoy and Karsten Gloe
pp. 533-536
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The reaction of (±)-trans-diaminocyclohexane (dach) with copper(ii) sulfate in water resulted in the spontaneous formation of the double complex salt, [Cu(dach)2(H2O)2][Cu(dach)2(SO4)2]·6H2O, which unexpectedly incorporated a Cu(dach)22+ motif in both of its complex cation and anion. Each copper(ii) centre had a trans N4O2-donor coordination shell, yielding an overall Jahn–Teller-distorted octahedral geometry.

CH15761Deprotonation of Large Calixarenes – Cation Binding and Conformations

Jack M. Harrowfield, George A. Koutsantonis, Mark I. Ogden, Alexandre N. Sobolev and Allan H. White
pp. 546-554
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The conformational behaviour of larger calixarenes in the solid state is considered in the context provided by single crystal X-ray studies of p-t-butylcalix[10]arene·2dmso·7H2O and [NMe4][p-t-butylcalix[9]arene-H]·2dmso·H2O.

CH15795CCC-NHC Pincer Zr Diamido Complexes: Synthesis, Characterisation, and Catalytic Activity in Hydroamination/Cyclisation of Unactivated Amino-Alkenes, -Alkynes, and Allenes

Henry U. Valle, Gopalakrishna Akurathi, Joon Cho, Wesley D. Clark, Amarraj Chakraborty and T. Keith Hollis
pp. 565-572
Graphical Abstract Image

CCC-NHC pincer Zr diamido complexes initiate hydroamination at room temperature. Hydroamination rates are improved using these complexes.

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Professor Kenneth Seddon OBE, one of AJC’s longest-standing Editors, sadly passed away on 21 January from prostate cancer. Ken was one of the world's best ionic liquids experts. His consistent unwavering support, loyalty and advocacy for AJC over the last 10 years will be sorely missed.