Theoretical study of the reactivity of 4d transition metal ions with N2O

Abstract The reactions of 4d transition metal ions (except Tc and Cd) with N2O on two potential energy surfaces, producing the metal oxide ion and N2, are studied by means of density functional theory. The results indicate that the lowest energy path corresponds to the η O 1 coordination of N2O followed by the insertion of M+ into the N–O bond. The reaction mechanism between 4d transition metal ions and N2O is an insertion–elimination mechanism. All products are formed in exothermic processes. The potential energy curve crossings, which dramatically affect reaction mechanisms, are discussed in detail.

[1]  A. Dandekar,et al.  Decomposition and reduction of N2O over copper catalysts , 1999 .

[2]  Charles W. Bauschlicher,et al.  Theoretical Study of M+−CO2and OM+CO Systems for First Transition Row Metal Atoms , 1997 .

[3]  M. Frisch,et al.  Ab Initio Calculation of Vibrational Absorption and Circular Dichroism Spectra Using Density Functional Force Fields , 1994 .

[4]  D. Bohme,et al.  O-atom transport catalysis by atomic cations in the gas phase: reduction of N2O by CO. , 2005, Journal of the American Chemical Society.

[5]  J. Mascetti,et al.  Vanadium insertion into CO2, CS2 and OCS: A comparative theoretical study , 2002 .

[6]  A. Delabie,et al.  Evaluating the Activation Barriers for Transition Metal N2O Reactions , 2001 .

[7]  G. Koyanagi,et al.  Gas-Phase Oxidation and Nitration of First-, Second-, and Third-Row Atomic Cations in Reactions with Nitrous Oxide: Periodicities in Reactivity , 2004 .

[8]  G. Koyanagi,et al.  Gas-phase reduction of oxides of nitrogen with CO catalyzed by atomic transition-metal cations. , 2003, Angewandte Chemie.

[9]  M. Kappes,et al.  Oxidation of transition-metal cations in the gas phase. Oxygen bond dissociation energies and formation of an excited-state product , 1981 .

[10]  N. Turro Modern Molecular Photochemistry , 1978 .

[11]  K. Yoshizawa,et al.  Intrinsic reaction coordinate analysis of the conversion of methane to methanol by an iron–oxo species: A study of crossing seams of potential energy surfaces , 1999 .

[12]  Freek Kapteijn,et al.  Heterogeneous catalytic decomposition of nitrous oxide , 1996 .

[13]  R. Fournier,et al.  Theoretical Study of the Interaction of the Ti Atom with CO2: Cleavage of the C-O Bond , 1997 .

[14]  Helmut Schwarz,et al.  CH and CC Bond Activation by Bare Transition‐Metal Oxide Cations in the Gas Phase , 1995 .