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ChemistryOpen

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April 2012

Volume 1, Issue 2

Pages 57–114

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      Cover Picture: (ChemistryOpen 2/2012) (page 57)

      Article first published online: 25 APR 2012 | DOI: 10.1002/open.201290005

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      The cover picture shows the concept behind ChemistryOpen. By creating the first chemical society-owned open-access journal, ChemPubSoc Europe and Wiley-VCH have unlocked the door to all areas of chemistry, symbolized here by the periodic table. Work published in ChemistryOpen will be accessible to all, irrespective of socioeconomic or geographical considerations. With the backing of 16 continental European chemical societies and the experience of its sister journals to hand, ChemistryOpen is expected to continue the high standards and level of excellence to be expected from a ChemPubSoc Europe journal.

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      Masthead: ChemistryOpen 2/2012 (page 58)

      Article first published online: 25 APR 2012 | DOI: 10.1002/open.201290006

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      Graphical Abstract: ChemistryOpen 2/2012 (pages 59–62)

      Article first published online: 25 APR 2012 | DOI: 10.1002/open.201290007

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      Masthead: ChemistryOpen 2/2012 (page 63)

      Article first published online: 25 APR 2012 | DOI: 10.1002/open.201290008

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      Spotlights on our sister journals: ChemistryOpen 2/2012 (pages 64–66)

      Article first published online: 25 APR 2012 | DOI: 10.1002/open.201290009

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      An Efficient and Recyclable Catalytic System Comprising Nanopalladium(0) and a Pyridinium Salt of Iron Bis(dicarbollide) for Oxidation of Substituted Benzyl Alcohol and Lignin (pages 67–70)

      Dr. Yinghuai Zhu, Dr. Li Chuanzhao, Meriska Sudarmadji, Ng Hui Min, Algin Oh Biying, Prof. John A. Maguire and Prof. Narayan S. Hosmane

      Article first published online: 4 APR 2012 | DOI: 10.1002/open.201100014

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      It′s teamwork! A composite of ionic liquid (IL)-stabilized palladium(0) nanoparticles and a pyridinium salt of iron bis(dicarbollide) (5) was found to be efficient for oxidation of substituted benzyl alcohols and lignin to produce aromatic aldehydes.

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      An Alternative Preparation of 1-(N,N-Dimethylaminomethyl)-1′-(diphenylphosphanyl)ferrocene: Synthesis and Structural Characterization of AuI and PdII Complexes with this Hybrid Ligand (pages 71–79)

      Prof. Dr. Petr Štěpnička, Martin Zábranský and Dr. Ivana Císařová

      Article first published online: 12 APR 2012 | DOI: 10.1002/open.201200004

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      Simple ligands behave complex! 1-(N,N-Dimethylaminomethyl)-1′-(diphenylphosphanyl)ferrocene (1) was prepared from 1,1′-dibromoferrocene and used as a donor for AuI and PdII ions. Compound 1 coordinates AuI as a simple phosphane, and its free amine is easily protonated. A similar observation was made with PdII, for which a ligand-bridged dimer [(μ-1)PdCl2]2 was also isolated.

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      End-to-End Thiocyanato-Bridged Helical Chain Polymer and Dichlorido-Bridged Copper(II) Complexes with a Hydrazone Ligand: Synthesis, Characterisation by Electron Paramagnetic Resonance and Variable-Temperature Magnetic Studies, and Inhibitory Effects on Human Colorectal Carcinoma Cells (pages 80–89)

      Kuheli Das, Dr. Amitabha Datta, Prof. Chittaranjan Sinha, Prof. Jui-Hsien Huang, Dr. Eugenio Garribba, Ching-Sheng Hsiao and Dr. Chin-Lin Hsu

      Article first published online: 13 MAR 2012 | DOI: 10.1002/open.201100011

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      A complex situation! The reactions of the tridentate hydrazone ligand, N′-[1-(pyridin-2-yl)ethylidene]acetohydrazide (HL) with copper nitrate in the presence of thiocyanate, or copper chloride produce a one-dimensional helical coordination chain of [CuL(NCS)]n and a doubly chlorido-bridged dinuclear complex [Cu2L2Cl2], respectively. Both complexes induce a decrease in cell-population growth of human colorectal carcinoma cells.

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      Colloidal Synthesis of Gold Semishells (pages 90–95)

      Denis Rodríguez-Fernández, Dr. Jorge Pérez-Juste, Dr. Isabel Pastoriza-Santos and Prof. Luis M. Liz-Marzán

      Article first published online: 13 MAR 2012 | DOI: 10.1002/open.201200002

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      Growing gold: Colloidal gold semishells were obtained by seeded growth on submicron Janus silica spheres and HF etching, thus avoiding lithographic methods. The method offers tunability of dimensions and of the corresponding plasmonic response.

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      Halogen Bonding versus Hydrogen Bonding: A Molecular Orbital Perspective (pages 96–105)

      Lando P. Wolters and Prof. Dr. F. Matthias Bickelhaupt

      Article first published online: 4 APR 2012 | DOI: 10.1002/open.201100015

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      More than just attraction! Halogen bonds in DX⋅⋅⋅A are similar in nature to hydrogen bonds in DH⋅⋅⋅A (D, X, A=F, Cl, Br, I) but the former have an even more pronounced covalent component (HOMO–LUMO orbital interaction; see figure) than the latter, as follows from detailed bonding analyses.

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      Synthesis and Structural Characterization of Stable Branched DNA G-Quadruplexes Using the Trebler Phosphoramidite (pages 106–114)

      Rubén Ferreira, Dr. Margarita Alvira, Dr. Anna Aviñó, Dr. Irene Gómez-Pinto, Dr. Carlos González, Dr. Valérie Gabelica and Dr. Ramon Eritja

      Article first published online: 25 APR 2012 | DOI: 10.1002/open.201200009

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      Tuning the treble! Herein, we describe a method to prepare highly stable G-quadruplexes by linking four guanine (G)-rich DNA strands on one end. This approach allows the introduction of specific modifications in one of the strands. For instance, we prepared a quadruplex with a single antiparallel strand. In this case, all-parallel or 3+1 structures are observed depending on the cation present. In addition to the expected monomolecular species, we observed the presence of dimeric G-quadruplex structures.

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