Search Results - "Melko, Joshua J."

Activation of Methane by FeO+: Determining Reaction Pathways through Temperature-Dependent Kinetics and Statistical Modeling by Ard, Shaun G, Melko, Joshua J, Ushakov, Vladimir G, Johnson, Ryan, Fournier, Joseph A, Shuman, Nicholas S, Guo, Hua, Troe, Jürgen, Viggiano, Albert A

“…The temperature dependences of the rate constants and product branching ratios for the reactions of FeO+ with CH4 and CD4 have been measured from 123 to 700 K…”
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Spin-inversion and spin-selection in the reactions FeO(+) + H2 and Fe(+) + N2O by Ard, Shaun G, Johnson, Ryan S, Melko, Joshua J, Martinez, Oscar, Shuman, Nicholas S, Ushakov, Vladimir G, Guo, Hua, Troe, Jürgen, Viggiano, Albert A

“…The reactions of FeO(+) with H2 and of Fe(+) with N2O were studied with respect to the production and reactivity of electronically excited (4)Fe(+) cations…”
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Mechanisms of sequential ion-molecule reactions in protonated methanol using mass spectrometry, ab initio methods, and statistical modeling by White, Melanie C., Mizrahi, Rachel E., Ruliffson, Jennifer E., Khoury, Matthew, Melko, Joshua J.

“…We present mass spectrometry results for reactions of protonated methanol clusters, (CH3OH)nH+. Mass spectra indicate a preference for association over…”
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Temperature Dependence of the OH– + CH3I Reaction Kinetics. Experimental and Simulation Studies and Atomic-Level Dynamics by Xie, Jing, Kohale, Swapnil C, Hase, William L, Ard, Shaun G, Melko, Joshua J, Shuman, Nicholas S, Viggiano, Albert A

“…Direct dynamics simulations and selected ion flow tube (SIFT) experiments were performed to study the kinetics and dynamics of the OH– + CH3I reaction versus…”
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Temperature and Isotope Dependent Kinetics of Nickel-Catalyzed Oxidation of Methane by Ozone by Sweeny, Brendan C, Ard, Shaun G, Melko, Joshua J, Ruliffson, Jennifer E, White, Melanie C, Viggiano, Albert A, Shuman, Nicholas S

“…The temperature dependent kinetics of Ni+ + O3 and of NiO+ + CH4/CD4 are measured from 300 to 600 K using a selected-ion flow tube apparatus. Together, these…”
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S‑P Coupling Induced Unusual Open-Shell Metal Clusters by Cheng, Shi-Bo, Berkdemir, Cuneyt, Melko, Joshua J, Castleman, A. W

“…Metal clusters featuring closed supershells or aromatic character usually exhibit remarkably enhanced stability in their cluster series. However, not all…”
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Further Insight into the Reaction FeO+ + H2 → Fe+ + H2O: Temperature Dependent Kinetics, Isotope Effects, and Statistical Modeling by Ard, Shaun G, Melko, Joshua J, Martinez, Oscar, Ushakov, Vladimir G, Li, Anyang, Johnson, Ryan S, Shuman, Nicholas S, Guo, Hua, Troe, Jürgen, Viggiano, Albert A

“…The reactions of FeO+ with H2, D2, and HD were studied in detail from 170 to 670 K by employing a variable temperature selected ion flow tube apparatus. High…”
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Statistical modeling of the reactions Fe(+) + N2O → FeO(+) + N2 and FeO(+) + CO → Fe(+) + CO2 by Ushakov, Vladimir G, Troe, Jürgen, Johnson, Ryan S, Guo, Hua, Ard, Shaun G, Melko, Joshua J, Shuman, Nicholas S, Viggiano, Albert A

“…The rates of the reactions Fe(+) + N2O → FeO(+) + N2 and FeO(+) + CO → Fe(+) + CO2 are modeled by statistical rate theory accounting for energy- and angular…”
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Determining Rate Constants and Mechanisms for Sequential Reactions of Fe+ with Ozone at 500 K by Melko, Joshua J, Ard, Shaun G, Lê, Trí, Miller, Gregory S, Martinez, Oscar, Shuman, Nicholas S, Viggiano, Albert A

“…We present rate constants and product branching ratios for the reactions of FeO x + (x = 0–4) with ozone at 500 K. Fe+ is observed to react with ozone at the…”
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Probing the Electronic Structures and Relative Stabilities of Monomagnesium Oxide Clusters MgOx- and MgOx (x = 1-4): A Combined Photoelectron Imaging and Theoretical Investigation by SHIBO CHENG, BERKDEMIR, Cuneyt, MELKO, Joshua J, CASDEMAN, A. W

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Probing the Electronic Structures and Relative Stabilities of Monomagnesium Oxide Clusters MgO x – and MgO x (x = 1–4): A Combined Photoelectron Imaging and Theoretical Investigation by Cheng, Shibo, Berkdemir, Cuneyt, Melko, Joshua J, Castleman, A. W

“…The electronic and structural properties of small monomagnesium oxide clusters, MgO x – and MgO x (x = 1–4), have been investigated using a synergistic…”
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Exploring the Reactions of Fe+ and FeO+ with NO and NO2 by Melko, Joshua J, Ard, Shaun G, Fournier, Joseph A, Shuman, Nicholas S, Troe, Jürgen, Viggiano, Albert A

“…We report for the first time temperature dependences (from 300 to 600 K) of the reactions of Fe+ and FeO+ with NO and NO2. Both ions react quickly with NO2,…”
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Iron cation catalyzed reduction of N2O by CO: gas-phase temperature dependent kinetics by Melko, Joshua J, Ard, Shaun G, Fournier, Joseph A, Li, Jun, Shuman, Nicholas S, Guo, Hua, Troe, Jürgen, Viggiano, Albert A

“…The ion-molecule reactions Fe(+) + N2O → FeO(+) + N2 and FeO(+) + CO → Fe(+) + CO2, which catalyze the reaction CO + N2O → CO2 + N2, have been studied over the…”
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Reactions of Fe+ and FeO+ with C2H2, C2H4, and C2H6: Temperature-Dependent Kinetics by Ard, Shaun G, Melko, Joshua J, Fournier, Joseph A, Shuman, Nicholas S, Viggiano, Albert A

“…We present the first temperature-dependent rate constants and branching ratios for the reactions of Fe+ and FeO+ with C2H2, C2H4, and C2H6 from 170 to 700 K…”
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Temperature-Dependent Kinetics of Charge Transfer, Hydrogen-Atom Transfer, and Hydrogen-Atom Expulsion in the Reaction of CO+ with CH4 and CD4 by Melko, Joshua J, Ard, Shaun G, Johnson, Ryan S, Shuman, Nicholas S, Guo, Hua, Viggiano, Albert A

“…We have determined the rate constants and branching ratios for the reactions of CO+ with CH4 and CD4 in a variable-temperature selected ion flow tube. We find…”
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Origins of Stability in Mixed Bismuth−Indium Clusters by Gupta, Ujjwal, Reveles, J. Ulises, Melko, Joshua J, Khanna, Shiv N, Castleman, A. W

“…The electronic structure and stability of neutral and negatively charged Bi x In y (x = 1−4, y = 1−6) clusters are investigated through anionic photoelectron…”
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Electron Attachment to C7F14, Thermal Detachment from C7F14 –, the Electron Affinity of C7F14, and Neutralization of C7F14 – by Ar by Miller, Thomas M, Friedman, Jeffrey F, Shuman, Nicholas S, Ard, Shaun G, Melko, Joshua J, Viggiano, A. A

“…Rate coefficients and branching fractions have been measured for electron attachment to perfluoromethylcyclohexane, C7F14, along with thermal detachment rate…”
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Comment on “Role of (NO)2 Dimer in Reactions of Fe+ with NO and NO2 Studied by ICP-SIFT Mass Spectrometry” by Melko, Joshua J, Ard, Shaun G, Fournier, Joseph A, Shuman, Nicholas S, Troe, Jürgen, Viggiano, Albert A

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Electronic Structure Similarities in Pb x Sb y – and Sn x Bi y – Clusters by Melko, Joshua J, Werner, Ute, Mitrić, Roland, Bonačić-Koutecký, Vlasta, Castleman, A. W

“…The geometric and electronic structure of Pb x Sb y – and Sn x Bi y – clusters are investigated by photoelectron spectroscopy and theoretical methods. It is…”
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Effect of Charge and Composition on the Structural Fluxionality and Stability of Nine Atom Tin−Bismuth Zintl Analogues by Gupta, Ujjwal, Reber, Arthur C, Clayborne, Penee A, Melko, Joshua J, Khanna, Shiv N, Castleman, A. W

“…Synergistic studies of bismuth doped tin clusters combining photoelectron spectra with first principles theoretical investigations establish that highly…”
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