Guided-ion beam studies of the reactions of protonated water clusters, H(H2O)+n (n=1–4), with acetonitrile

Honma, Kenji; Sunderlin, L. S.; Armentrout, P. B.
August 1993
Journal of Chemical Physics;8/1/1993, Vol. 99 Issue 3, p1623
Academic Journal
Reactions of protonated water clusters, H(H2O)n+ (n=1–4), with acetonitrile are studied by using guided-ion beam mass spectrometry. Absolute reaction cross sections are determined as a function of the collision energy from thermal energy to over 10 eV. Proton transfer, charge transfer, and dissociative proton transfer are the reactions seen for n=1. For n=2–4, proton transfer is accompanied by solvent transfer such that the dominant product at low collision energies is H(CH3CN)(H2O)n-1+ in each case. At higher collision energies, additional water ligands are lost and the collision-induced dissociation products, H(H2O)n-m+ where m=1 to n-1, are also observed. The total reaction cross sections are large and decrease slightly with the number of water molecules. The results indicate that energy transfer in these complexes is efficient and thus are consistent with reactions that proceed via hydrogen-bonded intermediate complexes.


Related Articles

  • Oxygenated compounds in aged biomass burning plumes over the Eastern Mediterranean: evidence for strong secondary production of methanol and acetone. Holzinger, R.; Williams, J.; Salisbury, G.; Klüpfel, T.; De Reus, M.; Traub, M.; Crutzen, P. J.; Lelieveld, J. // Atmospheric Chemistry & Physics;2005, Vol. 5 Issue 1, p39 

    Airborne measurements of acetone, methanol, PAN, acetonitrile (by Proton Transfer Reaction Mass Spectrometry), and CO (by Tunable Diode Laser Absorption Spectroscopy) have been performed during the Mediterranean Intensive Oxidants Study (MINOS August 2001). We have identified ten biomass burning...

  • Quantification of recent smoking behaviour using proton transfer reaction-mass spectrometry (PTR-MS). Lirk, Philipp; Bodrogi, Florian; Deibl, Martina; Kähler, Christian M.; Colvin, Joshua; Moser, Berthold; Pinggera, Germar; Raifer, Hartmann; Rieder, Josef; Schobersberger, Wolfgang // Wiener Klinische Wochenschrift;2004, Vol. 116 Issue 1/2, p21 

    Smoking is the most important single risk factor in current public health. Surveillance of exposure to tobacco smoke may be accomplished using environmental monitoring or in-vivo tests for smoking biomarkers. Acetonitrile exhaled in human breath has been described as a potential marker mirroring...

  • Sources of long-lived atmospheric VOCs at the rural boreal forest site, SMEAR II. Patokoski, J.; Ruuskanen, T. M.; Kajos, M. K.; Taipale, R.; Rantala, P.; Aalto, J.; Ryyppö, T.; Nieminen, T.; Hakola, H.; Rinne, J. // Atmospheric Chemistry & Physics;2015, Vol. 15 Issue 23, p13413 

    In this study a long-term volatile organic compound (VOCs) concentration data set, measured at the SMEAR II (Station for Measuring Ecosystem-Atmosphere Relations) boreal forest site in Hyytiälä, Finland during the years 2006-2011, was analyzed in order to identify source areas and profiles...

  • Butter and butter oil classification by PTR-MS. S. van Ruth; A. Koot; W. Akkermans; N. Araghipour; M. Rozijn; M. Baltussen; A. Wisthaler; T. Märk; R. Frankhuizen // European Food Research & Technology;May2008, Vol. 227 Issue 1, p307 

    Abstract  The potential of proton transfer reaction mass spectrometry (PTR-MS) as a tool for classification of milk fats was evaluated in relation to quality and authentication issues. Butters and butter oils were subjected to heat and off-flavouring treatments in order to create...

  • The ultrafast dynamics of HBr–water clusters: Influences on ion-pair formation. Hurley, S. M.; Dermota, T. E.; Hydutsky, D. P.; Castleman, A. W. // Journal of Chemical Physics;5/22/2003, Vol. 118 Issue 20, p9272 

    The ultrafast dynamics of HBr-water clusters have been investigated using pump-probe spectroscopy coupled with reflectron time-of-flight mass spectrometry. HBr clusters, mixed HBr-water clusters, and protonated water clusters are observed in the mass spectra. Dynamic studies reveal that when an...

  • Translational energy dependence of O+(4S)+N2→NO++N from thermal energies to 30 eV c.m. Burley, J. D.; Ervin, Kent M.; Armentrout, P. B. // Journal of Chemical Physics;2/15/1987, Vol. 86 Issue 4, p1944 

    Guided ion beam mass spectrometry is used to examine the kinetic energy dependence of the reaction of ground state atomic oxygen ion with molecular nitrogen. An O+(4S) source which produces less than 0.06% excited states is described. Cross sections for the NO++N product channel decrease with...

  • Environment-dependent desorption of benzene molecules. Meserole, Chad A.; Vandeweert, Erno; Dou, Yusheng; Postawa, Zbigniew; Winograd, Nick // AIP Conference Proceedings;2001, Vol. 584 Issue 1, p197 

    We have investigated the dependence of the 8 keV Ar[sup +] ion beam-induced desorption of neutral benzene (C[sub 6]H[sub 6]) molecules on the local environment. The probed system was comprised of carefully constructed combinations of C[sub 6]H[sub 6] and sec-Butyl Alcohol (sBA) deposited on...

  • Mass Defect Filtering on High Resolution LC/MS Data as a Methodology for Detecting Metabolites with Unpredictable Structures: Identification of Oxazole-Ring Opened Metabolites of Muraglitazar. Donglu Zhang; Cheng, Peter T.; Haiying Zhang // Drug Metabolism Letters;Dec2007, Vol. 1 Issue 4, p287 

    This study describes the application of the mass defect filter method for the detection of two unpredicted oxazole-ring opened metabolites of muraglitazar in the feces of humans following oral administration. Unlike other muraglitazar metabolites, these metabolites formed little to no protonated...

  • Characterization of 40 kDa poly(ethylene glycol) polymers by proton transfer reaction QTOF mass spectrometry and H-NMR spectroscopy. Malmstrøm, Joan // Analytical & Bioanalytical Chemistry;Aug2012, Vol. 403 Issue 4, p1167 

    Several electrospray mass spectrometry (ESI-MS) techniques have been described during the past years to enable the characterization work of large poly(ethylene glycol)s (PEGs) and PEGylated proteins. The proton transfer reaction ESI-MS method utilizes amines to charge reduce the electrospray...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics