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Issue DateTitleAuthor(s)TypeAccess
12000Singularities in the Hamiltonian at electronic degeneraciesVarandas, A. J. C. ; Xu, Z. R. articleopenAccess
22001Ab initio theoretical calculation and potential energy surface for ground-state HO3Yu, H. G. ; Varandas, A. J. C. articleopenAccess
32006Accurate MRCI study of ground-state N2H2 potential energy surfaceBiczysko, M. ; Poveda, L. A. ; Varandas, A. J. C. articleopenAccess
410-Oct-2002Six-Dimensional Energy-Switching Potential Energy Surface for HeHCNAnsari, Wazir-ul H. ; Varandas, António J. C. articleopenAccess
55-Feb-2004Are Vibrationally Excited Molecules a Clue for the “O3 Deficit Problem” and “HOx Dilemma” in the Middle Atmosphere?Varandas, A. J. C. articleopenAccess
630-May-2002Dynamics Study of the OH + O2 Branching Atmospheric Reaction. 4. Influence of Vibrational Relaxation in Collisions Involving Highly Excited SpeciesGarrido, J. D. ; Caridade, P. J. S. B. ; Varandas, A. J. C. articleopenAccess
723-Apr-2009Accurate Double Many-Body Expansion Potential Energy Surface for the Lowest Singlet State of MethyleneJoseph, S. ; Varandas, A. J. C. articleopenAccess
822-Mar-2001Vibrational Calculations for the HD2 First-Excited Electronic State Using a Coordinate-Transformation TechniqueXu, Z. R. ; Varandas, A. J. C. articleopenAccess
97-Feb-2008A Theoretical Study of Rate Coefficients for the O + NO Vibrational RelaxationCaridade, P. J. S. B. ; Mota, V. C. ; Mohallem, J. R. ; Varandas, A. J. C. articleopenAccess
1017-Mar-2005Unimolecular and Bimolecular Calculations for HN2Caridade, P. J. S. B. ; Rodrigues, S. P. J. ; Sousa, F. ; Varandas, A. J. C. articleopenAccess
112007Kinetics and dynamics of O + OClO reaction in a modified many-body expansion potential energy surface for ClO3Teixeira, O. B. M. ; Marques, J. M. C. ; Varandas, A. J. C. articleopenAccess
1219-Jan-2006New Double Many-Body Expansion Potential Energy Surface for Ground-State HCN from a Multiproperty Fit to Accurate ab Initio Energies and Rovibrational CalculationsVarandas, A. J. C. ; Rodrigues, S. P. J. articleopenAccess
132000Superfícies de energia potencial, propriedades eléctricas, espetroscopia e reactividade de sistemas moleculares.Rodrigues, Sérgio Paulo Jorge doctoralThesisembargoedAccess
142003Theoretical studies of unimolecular and bimolecular reactions: from electronic structure to dynamics.Trujillo, Jorge Luís Llanio doctoralThesisembargoedAccess
152008Application of renormalized coupled-cluster methods to potential function of waterPiecuch, Piotr ; Wloch, Marta ; Varandas, António J. C. articleopenAccess
1627-Jun-2002A Direct Evaluation of the Partition Function and Thermodynamic Data for Water at High TemperaturesPrudente, Frederico V. ; Varandas, António J. C. articleopenAccess
1731-May-2001Calculation of the Rovibrational Partition Function Using Classical Methods with Quantum CorrectionsPrudente, Frederico V. ; Riganelli, Antonio ; Varandas, António J. C. articleopenAccess
1828-Dec-2006Dynamics Study of the OH + O3 Atmospheric Reaction with Both Reactants Vibrationally ExcitedZhang, Lei ; Luo, Pingya ; Huang, Zhiyu ; Varandas, António J. C. articleopenAccess
1922-Feb-2007Recalibrated Double Many-Body Expansion Potential Energy Surface and Dynamics Calculations for HN2Caridade, P. J. S. B. ; Poveda, L. A. ; Rodrigues, S. P. J. ; Varandas, A. J. C. articleopenAccess
202006Extrapolating potential energy surfaces by scaling electron correlation at a single geometryVarandas, A. J. C. ; Piecuch, P. articleopenAccess
2115-Nov-2001Dynamics Study of the O2(v) + HO2 Atmospheric ReactionZhang, Lei ; Varandas, António J. C. articleopenAccess
2212-Dec-2002Dynamics Study of the O2 + HO2 Atmospheric Reaction with Both Reactants Highly Vibrationally ExcitedZhang, L. ; Varandas, A. J. C. articleopenAccess
232007Trajectory binning scheme and non-active treatment of zero-point energy leakage in quasi-classical dynamicsVarandas, A. J. C. articleopenAccess
241-Sep-2008An ab initio study of the interaction between He and C36 with extrapolation to the one electron basis set limitVarandas, A. J. C. articleopenAccess
2518-Oct-2001On the Rovibrational Partition Function of Molecular Hydrogen at High TemperaturesRiganelli, Antonio ; Prudente, Frederico V. ; Varandas, António J. C. articleopenAccess
262005What are the Implications of Nonequilibrium in the O+OH and O+HO2 Reactions?Varandas, A. J. C. articleopenAccess
2716-Oct-2008Extrapolating to the One-Electron Basis Set Limit in Polarizability CalculationsJunqueira, G. M. A. ; Varandas, A. J. C. articleopenAccess
2817-Jul-2003Dynamics Study of the Reaction S + O2 → SO + O and Its Reverse on a Single-Valued Double Many-Body Expansion Potential Energy Surface for Ground-State SO2Rodrigues, S. P. J. ; Varandas, A. J. C. articleopenAccess
292002Existence of strictly diabatic basis sets for the two-state problemKryachko, Eugene S. ; Varandas, António J. C. articleopenAccess
302005A novel accurate representation of a double-valued potential energy surface by the DMBE method. Application to triplet H3+(a3E')Varandas, António J. C. ; Alijah, Alexander ; Cernei, Mihail articleopenAccess
3114-Oct-2004Dynamics Study of the O + HO2 Reaction Using Two DMBE Potential Energy Surfaces: The Role of Vibrational ExcitationSilveira, Dora M. ; Caridade, Pedro J. S. B. ; Varandas, António J. C. articleopenAccess
3224-Jan-2002Single-Valued Double Many-Body Expansion Potential Energy Surface of Ground-State SO2Rodrigues, S. P. J. ; Sabín, J. A. ; Varandas, A. J. C. articleopenAccess
332000On the behavior of single-surface nuclear wavefunctions in the vicinity of the conical intersection for an X3 systemVarandas, A. J. C. ; Xu, Z. R. articleopenAccess
3425-Apr-2002A VTST Study of the H + O3 and O + HO2 Reactions Using a Six-dimensional DMBE Potential Energy Surface for Ground State HO3Fernández-Ramos, A. ; Varandas, A. J. C. articleopenAccess
352003Cone states of tri-hydrogen isotopomers and criterion for the geometric phase effectVarandas, A. J. C. ; Viegas, L. P. articleopenAccess
362008Dynamics and kinetics of the S + HO2 reaction: A theoretical studyBallester, M. Y. ; Varandas, A. J. C. articleopenAccess
372004Geometric phase effect at N-fold electronic degeneracies in Jahn-Teller systemsVarandas, A. J. C. ; Xu, Z. R. articleopenAccess
382008Can extrapolation to the basis set limit be an alternative to the counterpoise correction? A study on the helium dimerVarandas, A. articleopenAccess
392008Møller-Plesset perturbation energies and distances for HeC20extrapolated to the complete basis set limitVarandas, A. J. C. articleopenAccess
402007Variational transition-state theory study of the atmospheric reaction OH + O3 → HO2+ O 2Ju, Li-Ping ; Han, Ke-Li ; Varandas, António J. C. articleopenAccess
412002A realistic double many-body expansion potential energy surface for from a multiproperty fit to accurate ab initio energies and vibrational levelsVarandas, A. J. C. ; Rodrigues, S. P. J. articleopenAccess
422000Is there a barrier for the C2v insertion reaction in O(1D)+H2? A test dynamics study based on two-valued energy-switching potential energy surfacesVarandas, A. J. C. ; Voronin, A. I. ; Caridade, P. J. S. B. ; Riganelli, A. articleopenAccess
432002On triplet tetraoxygen: ab initio study along minimum energy path and global modellingVarandas, A. J. C. ; Llanio-Trujillo, J. L. articleopenAccess
442000Test studies on the potential energy surface and rate constant for the OH+O3 atmospheric reactionVarandas, A. J. C. ; Zhang, L. articleopenAccess
452001OH(v)+O3: Does chemical reaction dominate over non-reactive quenching?Varandas, A. J. C. ; Zhang, L. articleopenAccess
462000On the interaction of two conical intersections: the H6 systemVarandas, A. J. C. ; Voronin, A. I. ; Borges, I. articleopenAccess
472003Forbidden transitions in benzeneBorges, I. ; Varandas, A. J. C. ; Rocha, A. B. ; Bielschowsky, C. E. articleopenAccess
4818-Apr-2002Li + Li2 Dissociation Reaction Using the Self-Consistent Potential and Trajectory Surface Hopping MethodsMarques, J. M. C. ; Voronin, A. I. ; Varandas, A. J. C. articleopenAccess
4924-Apr-2008HN2(2A‘) Electronic Manifold. II. Ab Initio Based Double-Sheeted DMBE Potential Energy Surface via a Global Diabatization AngleMota, Vinícius C. ; Varandas, António J. C. articleopenAccess
502006Accurate DMBE Potential Energy Surface For the N(2D) + H2(1S g+ ) Reaction Using an Improved Switching Function FormalismVarandas, A. ; Poveda, L. articleopenAccess
Results 1-50 of 76 (Search time: 1.265 seconds).