نتایج جستجو برای: propane
تعداد نتایج: 3880 فیلتر نتایج به سال:
Although propane gas (C3H8) was first detected in the stratosphere of Titan by the 14 Voyager IRIS infrared spectrometer in 1980, obtaining an accurate measurement of its 15 abundance has proved difficult. All existing measurements have been made by modeling 16 the ν26 band at 748 cm : however different analyzes over time have yielded quite different 17 results, and it also suffers from confusi...
Transetherification on polyols involving intra- and intermolecular nucleophilic substitutions is reported. Di- or trialkoxide formation of propane-1,3-diol or 2-(hydroxymethyl)propane-1,3-diol derivatives by NaH triggers the reaction via oxetanes formation, where the order to add NaH and a polyol significantly influences the yields of products. It was demonstrated that the protective group on t...
Experimental data on the kinetics of propane hydrate dissociation at 0.1 MPa and different external temperatures were obtained. A two-stage mechanism of hydrate dissociation was observed visually. In the first stage hydrate dissociated into metastable water and gas. During the second stage the metastable water crystallized into ice. The release of metastable water during hydrate dissociation an...
The title compound, C(19)H(16)FNO, crystallizes with two independent mol-ecules in the asymmetric unit. In the two mol-ecules, the dihedral angles between the benzene and quinoline rings are 72.6 (5) and 76.2 (5)°, between the cyclo-propane and quinoline rings they are 65.2 (5) and 66.0 (5)°, and between the benzene and cyclo-propane rings they are 25.9 (5) and 33.9 (5)°. There are inter-molecu...
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