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Motivated by the possible importance of OBrO in atmospheric photochemistry, multireference configuration interaction calculations of the low-lying excited states were carried out to obtain information about the electronic vertical spectrum up to excitation energies of about 6 eV from the ground state, including the transition dipole moments, and about possible photodissociation pathways, based on one-dimensional cuts through the potential energy surfaces for dissociation into BrO + O and Br + O2, respectively. In addition, for probing the angle dependence the bending potentials were also calculated.
Quasiclassical dynamics of proton scattering by N2 on an improved ab initio potential energy surface
(2001)
An improved analytical representation of the ground electronic potential energy surface (PES) of the (H+, N2) system is generated using the ab initio data reported in our earlier work. The new analytical PES function describes adequately the global behavior and in particular the angular dependence of the interaction as well as the long-range part so that it is amenable to scattering studies. We investigate the elastic and inelastic H+-N2 scattering dynamics on this PES by the quasiclassical trajectory method for center-of-mass collision energies in the range 29-144 eV. The trajectory results thus obtained are compared with the available experimental findings and with recent quantum-mechanical (vibrational close-coupling rotational infinite-order sudden) results. Despite some differences, the experimental data are well reproduced by the present calculations.
Complete 3D potential energy surfaces for the two lowest electronic states of the system (N2H)+
(1996)
The electronic and geometric structure, stability and molecular properties of the cationic van-der-Waals complex Ar2H+ in its ground electronic state are studied by means of two ab-initio quantum-chemical approaches: conventional configuration interaction (multi-reference and coupled cluster methods) and a diatomics-in-molecules model with ab-initio input data.