Dalton Transactions

doi: 10.1039/b920940apmid: N/A

doi: 10.1039/b920942ppmid: N/A

Wang, Sujing; Wang, Zhiyong; Zha, Zhenggen

doi: 10.1039/b913539apmid: 19859587

Recently, organic reactions catalyzed by metal/metal oxide nanoparticles (NPs) has attracted much attention. The notable advantages of this novel family of heterogeneous catalysts, such as high catalytic activity, good recyclability and improved selectivity, extend to a wide-range of applications in various organic reactions. This perspective provides an overview of the progresses made in metal/metal oxide NPs catalyzed organic reactions achieved in our group. Based on our investigations, we suggest that further exploration is required in two aspects in this area: (1) the effects of the size and shape of NPs on the reaction activity and selectivity, and (2) the effect of the supporting environment of the artificial template on the reaction activity and selectivity.

Brimblecombe, Robin; Dismukes, G. Charles; Swiegers, Gerhard F.; Spiccia, Leone

doi: 10.1039/b912669dpmid: 19859588

Photoelectrochemical cells that efficiently split water into oxygen and hydrogen, “the fuel of the future”, need to combine robust water oxidation catalysts at the anode (2H2O → O2 + 4H+ + 4e−) with hydrogen reduction catalysts at the cathode (2H+ + 2e−→ H2). Both sets of catalysts will, ideally, operate at low overpotentials and employ light-driven or light-assisted processes. In this Perspective article, we focus on significant efforts to develop solid state materials and molecular coordination complexes as catalyst for water oxidation. We briefly review the field with emphasis on the various molecular catalysts that have been developed and then examine the activity of molecular catalysts in water oxidation following their attachment to conducting electrodes. For such molecular species to be useful in a solar water-splitting device it is preferable that they are securely and durably affixed to an electrode surface. We also consider recent developments aimed at combining the action of molecular catalysts with light absorption so that light driven water oxidation may be achieved.

Izarova, Natalya V.; Biboum, Rosa Ngo; Keita, Bineta; Mifsud, Maria; Arends, Isabel W. C. E.; Jameson, Geoffrey B.; Kortz, Ulrich

doi: 10.1039/b917079kpmid: 19859589

A novel heteropolyoxopalladate structural type has been discovered: the polyoxo-15-palladate(II) [Pd0.4Na0.6⊂Pd15P10O50H6.6]12− (Pd15) has been prepared in a one-pot self-assembly reaction and characterized by single-crystal XRD, elemental analysis, IR, TGA, 31P NMR and electrochemistry; preliminary catalytic studies showed that Pd15 is active as a catalyst in alcohol oxidation by dioxygen.

Qin, Li; Zhang, Qisheng; Sun, Wei; Wang, Jingyun; Lu, Canzhong; Cheng, Yanxiang; Wang, Lixiang

doi: 10.1039/b916782jpmid: 19859590

Luminescent heteroleptic CuI complexes based on asymmetrical iminephosphine ligands exhibit improved electrochemical and photochemical stability as compared to the analogous complexes based on traditional diimine or diphosphine ligands.

Radloff, Christian; Weigand, Jan J.; Hahn, F. Ekkehardt

doi: 10.1039/b916651cpmid: 19859591

A tetranuclear molecular rectangle consisting of two bridging dicarbene ligands and two bridging diphosphine ligands was prepared by connection of two dinuclear gold(I) complexes with 1,2-bis(diphenylphosphino)ethane.

Ferguson, Alan; McGregor, Julie; Brechin, Euan K.; Thomas, Lynne H.; Murrie, Mark

doi: 10.1039/b913102gpmid: 19859592

The synthesis, structure and magnetic properties of [Fe14O4(OH)4(H2L)2(HL)4(piv)20] (1) and [Fe8Cu2O4(H2L)4(HL)2(OBz)12] (2) are reported (H3L = 2-amino-2-(hydroxymethyl)propane-1,3-diol): both complexes have unique core structures and display non-zero spin ground states.

Breynaert, Eric; Kirschhock, Christine E. A.; Maes, André

doi: 10.1039/b913558hpmid: 19859593

A structure elucidation strategy combining X-ray Absorption Spectroscopy (XAS) and Density Functional Theory (DFT) is demonstrated and reveals the existence of the [TcO]2+ moiety.

Tidmarsh, Ian S.; Batchelor, Luke J.; Scales, Emma; Laye, Rebecca H.; Sorace, Lorenzo; Caneschi, Andrea; Schnack, Jürgen; McInnes, Eric J. L.

doi: 10.1039/b911586bpmid: 19859594

The crystal structure of the monomeric vanadium(III) species mer-[V(bipy)Cl3(MeCN)] (1; bipy = 2,2′-bipyridine) is reported. The solvothermal reaction of [V(bipy)Cl3(MeCN)]with Na(O2CPh) yields the T-shaped cluster [V3(O)Cl3(O2CPh)2(bipy)2(OEt)2], magnetic studies of which show strong intramolecular antiferromagnetic coupling giving a well isolated S = 1 ground state. Solvothermal treatment of 1 with triols yields a series of polymetallic clusters [V4Cl6(thme)2(bipy)3], [V3Cl4(Hcht)2(bipy)2]Cl and [V8(OH)2Cl4(cht)4(O2CPh)6(bipy)2], structurally related to previously reported {M4} centred triangles. Magnetic studies of this series reveal very weak intramolecular antiferromagnetic exchange and very strong local zero-field splitting effects.