Equimolar quantities of [WI(CO)(NCMe)(dppm)(/72-MeC2Me)][BF4] {dppm = Ph2P(CH2)PPh2} and NaSR (R = Et. Bu', Ph or CH2Ph) react in CH2C12 at room temperature to give the neutral thiolate complexes [WI(SR)(CO)(dppm)(?72-MeC2Me)] (1 —» 4) in good yield. The complex [WI(CO)(NCMe)(dppm)(?72-MeC2Me)][BF4] also reacts with two equiv­ alents of NaSR (R = Et. Bu'. Ph or CH?Ph) in CH2C12 at room temperat...

   In this research carbon nanotubes were produced by chemical vapor deposition of acetylene over a mixture of iron and cobalt catalysts supported on nanometric TiO2 and the influences of two synthesis parameters: growth temperature and catalyst composition ratio on properties of end-product carbon nanotubes were investigated. The catalytic basis was prepared by wet impregnation ...

Elemental phosphorus has been known for about 350 years. As a result of huge scientific interest, numerous textbooks are filled with information about this element, its different allotropes, and its compounds. [1] Like boron and carbon, the element features tremendous structural variability, resulting in great diversity of physical properties and chemical reactivity: White phosphorus, P4, forms...

This manuscript deals with the measurement of carbonaceous particulate matter in aerosols collected at 12 rural/background sites and 2 sub-urban sites across Europe, using, mainly, the EMEP measuring network. Taking into account the relative importance of carbonaceous material in continental atmospheric aerosols and the lack of extensive measurements of carbonaceous aerosol characteristics in r...

Downward fluxes of elemental carbon, metals and polycyclic aromatic hydrocarbons in settling particles from the deep Ionian Sea (NESTOR site), Eastern Mediterranean C. Theodosi, C. Parinos, A. Gogou, A. Kokotos, S. Stavrakakis, V. Lykousis, J. Hatzianestis, and N. Mihalopoulos Environmental Chemistry Processes Laboratory, Department of Chemistry, University of Crete, P.O. Box 2208, 71003 Herakl...

H. Yu, C. Wu, D. Wu, and J. Z. Yu Atmospheric, Marine and Coastal Environment Program, Division of Environment, Hong Kong University of Science&Technology, Clear Water Bay, Kowloon, Hong Kong, China Atmospheric Research Center, HKUST Fok Ying Tung Graduate School, Nansha, Guangzhou 511458, China Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou 510058,...

A novel series of some precursors of 6, 8-dibromoquinazolin-4(3H)-one 61-12 have been synthesized by the based catalysed cyclisation of chromenamido 51-12 with phenylhydrazine hydrate. The overall reaction was base catalysed conventional multistep process. The title compounds have been confirmed by spectral data IR, 1H NMR, 13C NMR and elemental analysis. All the synthesized target molecules we...

Hydrogenobacter thermophilus is a thermophilic, obligately chemolithoautotrophic and aerobic hydrogen-oxidizing bacterium. It is unique in its ability to fix carbon dioxide via the reductive tricarboxylic acid cycle under aerobic conditions. It utilizes molecular hydrogen, elemental sulfur, or thiosulfate as the sole energy source. Here, we report the complete genome sequence of H. thermophilus...

Elemental homeostasis has been largely characterized using three important elements that were part of the Redfield ratio (i.e., carbon: nitrogen: phosphorus). These efforts have revealed substantial diversity in homeostasis among taxonomic groups and even within populations. Understanding the evolutionary basis, and ecological consequences of such diversity is a central challenge. Here, we prop...