TITLE

Gas-phase thermochemistry of VH and CrH

AUTHOR(S)
Chen, Yu-Min; Clemmer, D. E.; Armentrout, P. B.
PUB. DATE
March 1993
SOURCE
Journal of Chemical Physics;3/15/1993, Vol. 98 Issue 6, p4929
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The homolytic bond dissociation energies of the transition-metal neutral hydrides, Do(M–H) (M=V, Cr), are experimentally determined by using guided ion beam tandem mass spectrometry to measure the kinetic energy dependence of the endothermic hydride abstraction reactions of M+ with mono-, di-, and trimethylamine. From the thresholds of these reactions, we derive the 0 K values of Do(V–H)=2.13±0.07 eV and Do(Cr–H)=1.93±0.07 eV. This thermochemistry is compared with theoretical values and previous experimental results.
ACCESSION #
7642696

 

Related Articles

  • A DFT study of temperature dependent dissociation mechanism of HF in HF(HO) cluster. YADAV, SWATANTRA; MISHRA, HIRDYESH; TIWARI, ASHWANI // Journal of Chemical Sciences;Oct2015, Vol. 127 Issue 10, p1839 

    We report a Density Functional Theoretical (DFT) study of dissociation of Hydrogen Fluoride (HF) in HF(H O) cluster, using B3LYP functional and empirical exchange correlation functional M06-2X along with 6-31 + G(d,p) basis set. Dissociation constant, K , of HF dissociation and pK values of HF...

  • Models for direct Monte Carlo simulation of coupled vibration�dissociation. Haas, Brian L.; Boyd, Iain D. // Physics of Fluids A;Feb93, Vol. 5 Issue 2, p478 

    Models are developed to permit direct Monte Carlo techniques to simulate coupled vibration�dissociation (CVD) behavior prevalent in high-temperature gases. This transient thermochemical phenomenon leads to dissociation incubation, reduced quasisteady dissociation rates, and non-Boltzmann...

  • Thermochemistry of the gaseous uranium bromides UBr through UBr5. Lau, K. H.; Hildenbrand, D. L. // Journal of Chemical Physics;3/1/1987, Vol. 86 Issue 5, p2949 

    High temperature gaseous equilibria involving the molecular species UBr, UBr2, UBr3, UBr4, and UBr5 were studied by mass spectrometry over wide temperature ranges; reaction enthalpy data were derived primarily from second-law analysis. From this information, the individual bond dissociation...

  • Kinetics and thermochemistry of ClCO formation from the Cl+CO association reaction. Nicovich, J. M.; Kreutter, K. D.; Wine, P. H. // Journal of Chemical Physics;3/15/1990, Vol. 92 Issue 6, p3539 

    Laser flash photolysis of Cl2/CO/M mixtures (M=N2, CO, Ar, CO2) has been employed in conjunction with Cl(2PJ) detection by time-resolved resonance fluorescence spectroscopy to investigate equilibration kinetics in the reactions Cl(2PJ) +CO↔ClCO as a function of temperature (185–260...

  • Ion imaging study of reaction dynamics in the N+ + CH4 system. Pei, Linsen; Farrar, James M. // Journal of Chemical Physics;10/21/2012, Vol. 137 Issue 15, p154312 

    The velocity map ion imaging method is applied to the ion-molecule reactions of N+ with CH4. The velocity space images are collected at collision energies of 0.5 and 1.8 eV, providing both product kinetic energy and angular distributions for the reaction products CH4+, CH3+, and HCNH+. The...

  • Hydrogen dynamics and metallic phase stabilization in VO2. Warnick, Keith H.; Wang, Bin; Pantelides, Sokrates T. // Applied Physics Letters;3/10/2014, Vol. 104 Issue 10, p1 

    Experimental doping of VO2 with hydrogen has been shown to trigger the semiconductor-to-metal phase transition below room temperature. Here, we report the results of density functional calculations showing that hydrogen-induced lattice distortion stabilizes the metallic phase. We also show that...

  • Dissociation energy and ionization potentials of molecules and molecular ions in a collisional hydrogen plasma. Anisimov, S. I.; Petrov, Yu. V. // JETP Letters;3/10/97, Vol. 65 Issue 5, p412 

    It is shown that the dissociation energies of a hydrogen molecule and a hydrogen molecular ion are virtually independent of the screening length of the Coulomb potential in plasma even at densities for which the decrease in the ionization potential of the molecule reaches 30%. For this reason,...

  • Dissociation kinetics of hydrogen-passivated (100) Si/SiO2 interface defects. Stathis, J. H. // Journal of Applied Physics;6/15/1995, Vol. 77 Issue 12, p6205 

    Presents a study which measured the activation energy for thermal dissociation of hydrogen from silicon dangling-bond defects. Experimental details; Results and discussion; Conclusion.

  • On the thermal dissociation of hydrogen. Jansen, F.; Chen, I.; Machonkin, M. A. // Journal of Applied Physics;12/15/1989, Vol. 66 Issue 12, p5749 

    Presents study which examined the thermal dissociation of hydrogen. Experimental details; Results and discussion; Conclusion.

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics