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Université de Neuchâtel

1-Octen-3-Ol Isolated from Bont Ticks Attracts Amblyomma variegatum

McMahon, Conor ; Guerin, Patrick M. ; Syed, Zainulabeudin

In: Journal of Chemical Ecology, 2001, vol. 27, no. 3, p. 471-486

Volatiles from various life-stages of the bont ticks Amblyomma variegatum and A. hebraeum were collected by using solid-phase microfibers and charcoal traps. An octenol isomer was found to be a major constituent of most of the tick material sampled and was identified as 1-octen-3-ol by gas chromatography–mass spectrometry and by using antenna of the tsetse fly Glossina brevipalpis in gas...

Université de Neuchâtel

(1S,3S,7R)-3-methyl-α-himachalene from the male sandfly Lutzomyia longipalpis (Diptera: Psychodidae) induces neurophysiological responses and attracts both males and females

Spiegel, C.N. ; Jeanbourquin, P. ; Guerin, Patrick M. ; Hooper, A.M. ; Claude, S. ; Tabacchi, R. ; Sano, S. ; Mori, K.

In: Journal of Insect Physiology, 2005, vol. 51, no. 12, p. 1366-1375

Lutzomyia longipalpis adult males form leks on or near hosts and release (1S,3S,7R)-3-methyl-α-himachalene from their tergal glands to lure females to the same site for mating and feeding. Here we have examined whether the male-produced attractant could also serve as a male aggregation stimulus. High resolution chiral capillary gas chromatography analysis of male...

Bibliothèque cantonale jurassienne

A 200 year mid-European air temperature record preserved in lake sediments : an extension of the δ18 OP-air temperature relation into the past

Grafenstein, Ulrich von

In: Geochimica et cosmochimica acta : journal of the Geochemical Society and the Meteoritical Society, 1996, vol. 60, no. 21, p. 4025

Université de Neuchâtel

222Rn as a Partitioning Tracer To Detect Diesel Fuel Contamination in Aquifers : Laboratory Study and Field Observations

Hunkeler, Daniel ; Hoehn, E ; Höhener, P ; Zeyer, J

In: Environmental Science & Technology, 1997, vol. 31, no. 11, p. 3180-3187

The use of 222Rn, a naturally occurring radioactive isotope, was investigated as a partitioning tracer to detect and quantify the amount of non-aqueous-phase liquids (NAPLs) in contaminated aquifers. Diesel fuel was chosen as a model NAPL. The diesel fuel-water partition coefficient for 222Rn was 40 ± 2.3, in bottles containing diesel fuel and water at 12 °C. In...

Université de Neuchâtel

2-(2-Naphthyl)-1,3-dioxane

Thevenet, Damien ; Neier, Reinhard ; Stoeckli-Evans, Helen

In: Acta Crystallographica Section E : Structure Reports Online, 2010, vol. E66, no. 2, p. o473-o474, sup1-8

The title compound, C14H14O2, crystallizes in the chiral monoclinic space group P21. This acetal is composed of a planar naphthalene ring with a 1,3-dioxane ring substituent, which has a chair conformation. In the crystal structure, symmetry-related molecules are connected via a weak C-H ··· O interaction to form a helical chain propagating in [010]. While there are...

Université de Neuchâtel

2,2'-(Propane-2,2-diyl)bis(1H-pyrrole)

Journot, Guillaume ; Neier, Reinhard ; Stoeckli-Evans, Helen

In: Acta Crystallographica Section E : Structure Reports Online, 2010, vol. E66, no. 2, p. o392, sup1-9

The title compound, C11H14N2, crystallized with two independent molecules (A and B) in the asymmetric unit. The two molecules differ only slightly, with the pyrrole rings being inclined to one another at a dihedral angle of 87.67 (8)° in molecule A and 88.09 (7)° in molecule B. In the crystal, there are no classical hydrogen bonds,...

Université de Neuchâtel

2,3,4,7-Tetrahydro-1H-inden-2-ol: synthesis, molecular structure and coordination chemistry

Vieille-Petit, Ludovic ; Therrien, Bruno ; Süss-Fink, Georg

In: Polyhedron, 2004, vol. 23, no. 4, p. 687-691

2,3,4,7-Tetrahydro-1H-inden-2-ol (1) has been synthesised by Birch reduction of indan-2-ol. A single-crystal X-ray structure analysis of 1 shows the compound to exist as hydrogen-bonded polymers along the c-axis due to the presence of a series of hydrogen-bonds between hydroxo functions. The ferrocene ester derivatives, ferrocene carboxylic acid...