Applied Organometallic Chemistry

Cover image for Applied Organometallic Chemistry

November 2008

Volume 22, Issue 11

Pages 615–663

  1. Full Papers

    1. Top of page
    2. Full Papers
    1. Behavioural dynamics in the biological control of pests: role of silicon complexes (pages 615–619)

      Savita Belwal, Nighat Fahmi and R. V. Singh

      Version of Record online: 15 SEP 2008 | DOI: 10.1002/aoc.1426

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      New complexes of silicon (IV) with Schiff base ligands were synthesized and characterized. Further, their pesticidal activities were analysed successfully in vitro and in vivo experiments against pathogenic fungi and bacteria.

    2. Thermoregulated ionic liquids and their application for the hydroformylation of 1-dodecene catalyzed by Rh/TPPTS complex (pages 620–623)

      Bo Tan, Jingyang Jiang, Yanhua Wang, Li Wei, Dianjun Chen and Zilin Jin

      Version of Record online: 10 SEP 2008 | DOI: 10.1002/aoc.1431

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      Based on the synthesis of a new kind of room temperature ionic liquids, quaternary ammonium alkanesulfonate salts tailed with polyether chain to their alkyl group, a thermoregulated ionic liquid biphase system composed of ILPEG750, n-heptane and toluene was developed. The system was applied in the hydroformylation of 1-dodecene catalyzed by Rh/TPPTS complex. Under the optimum conditions, the conversion of 1-dodecene and yield of aldehyde are 99% and 97%, respectively. In addition, the catalyst could be easily separated from products by phase separation and efficiently recovered.

    3. Ferrocenylimidazoline palladacycles as efficient catalysts for the aza-Claisen rearrangement reaction of allylic imidates (pages 624–628)

      Xiuling Cui, Ji Ma, Dejian Yang, Junliang Wu, Maoping Song and Yangjie Wu

      Version of Record online: 5 SEP 2008 | DOI: 10.1002/aoc.1443

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      The ferrocenylimidazoline palladacycles were found to serve as effective catalysts for the aza-Claisen rearrangement of various allylic imidates with low catalyst loading without the use of silver salts for activation. The electronic properties of substituents on the imidazoline moiety and the solubility of chloride-bridged palladacycle dimers significantly affect the catalytic activity of ferrocenylimidazoline palladacycles.

    4. Low-temperature sol–gel transformation of methyl silicon precursors to silica-based hybrid materials (pages 629–636)

      Veena Dhayal, Rakesh Bohra, Meena Nagar, Ajay Kaushik, Sanjay Mathur and Sven Barth

      Version of Record online: 9 SEP 2008 | DOI: 10.1002/aoc.1448

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      Six new methyl silicon (IV) precursors of the type [MeSi{ON[DOUBLE BOND]C(R)Ar}3] have been prepared and characterized by spectroscopic, molecular weight measurements and FAB mass techniques. Formation of homogenous methyl silsesquioxane (MeSiO3/2) from the hydrolysis of the precursors by Sol-Gel technique at low sintering temperature has been observed. Hydrolysis of [MeSi{ON[DOUBLE BOND]C(CH3)C4H3O}3.Al(OPri)3] yields a regular porous structure with porosity in the nanometric range as indicated by XRD and SEM analyses.

    5. Syntheses, characterization and anti-microbial activities of palladium(II) and palladium(IV) complexes of 3,10-C-meso-Me8[14]diene (L1) and its reduced isomeric anes (LA, LB and LC). Crystal and molecular structure of [PdL1][Pd(SCN)4] (pages 637–646)

      Tapashi G. Roy, Saroj K. S. Hazari, Kanak K. Barua, Dong Il Kim, Yu Chul Park and Edward R.T. Tiekink

      Version of Record online: 1 SEP 2008 | DOI: 10.1002/aoc.1451

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      Modest to good anti-fungal and anti-bacterial activities are reported for a series of macrocyclic palladium(II) and palladium(IV) complexes.

    6. Metallic Li in carbonaceous nanotubes grown by metalorganic chemical vapor deposition from a metalorganic precursor (pages 647–658)

      Mahua Das, C. Bittencourt, J-J Pireaux and S. A. Shivashankar

      Version of Record online: 9 SEP 2008 | DOI: 10.1002/aoc.1454

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      Li in carbonaceous nanostructures was obtained in high concentration (as much as 33.4%) through metalorganic chemical vapor deposition involving certain lithium–aminoalkyl moieties, which are formed in situ, by decomposition of a precursor containing both cobalt and lithium. The bimetallic complex containing both lithium and cobalt was characterized by IR spectroscopy, mass spectroscopy, nuclear magnetic resonance spectroscopy, elemental analysis and thermogravimetric analysis. X-ray photoelectron spectroscopy measurements performed on the as-grown films demonstrate that lithium can be stable in metallic form in such a film. Results of X-ray photoelectron spectroscopic analysis of the as-grown films are presented as direct evidence of the formation and stabilization of metallic lithium in carbon nanotubes. Carbon nanotubes, encapsulating metallic lithium, can potentially act as a miniaturized nanobattery. Such a battery would be potentially useful in the next generation of communication and remote sensing devices, where a pulse of current is required for their operation. In addition, with metallic lithium, having an effective nuclear magnetic moment, such materials can be envisioned to show potential applications in devices based on nuclear magnetic resonances.

    7. Styrene polymerization with nickel complexes/methylaluminoxane catalytic system (pages 659–663)

      Yongfei Li, Meili Gao and Qing Wu

      Version of Record online: 5 SEP 2008 | DOI: 10.1002/aoc.1456

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      Styrene (St) polymerization was successfully performed by using of a series of nickel (II) complexes bearing β-diketiminate ligands in the presence of methylaluminoxane (MAO), and iso-rich atactic polystyrene was produced.