Negative ion formation in potassiumâ•finitromethane collisions
نویسندگان
چکیده
Ion-pair formation in gaseous nitromethane (CH3NO2) induced by electron transfer has been studied by investigating the products of collisions between fast potassium atoms and nitromethane molecules using a crossed molecular-beam technique. The negative ions formed in such collisions were analysed using time-of-flight mass spectroscopy. The six most dominant product anions are NO2 , O , CH3NO2 , OH , CH2NO2 and CNO . By using nitromethane-d3 (CD3NO2), we found that previous mass 17 amu assignment to O delayed fragment, is in the present experiment may be unambiguously assigned to OH . The formation of CH2NO2 may be explained in terms of dissociative electron attachment to highly vibrationally excited molecules.
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