Varandas, António

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Credit Name
Varandas, António
 
Name
Varandas, A. J. C.
 
Variants
Varandas, António J. C.
Varandas, A.
 
 
Email
varandas@uc.pt
 
 
Scopus Author ID
 
Status
UC Researcher
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Publications
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Date Issued:  [2000 TO 2024]

Results 1-82 of 82 (Search time: 0.002 seconds).

Issue DateTitleAuthor(s)TypeAccess
11-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
22001Ab initio theoretical calculation and potential energy surface for ground-state HO3Yu, H. G. ; Varandas, A. J. C. articleopenAccess
32006Accurate DMBE Potential Energy Surface For the N(2D) + H2(1S g+ ) Reaction Using an Improved Switching Function FormalismVarandas, A. ; Poveda, L. articleopenAccess
423-Apr-2009Accurate Double Many-Body Expansion Potential Energy Surface for the Lowest Singlet State of MethyleneJoseph, S. ; Varandas, A. J. C. articleopenAccess
52007Accurate global ab initio potentials at low-cost by correlation scaling and extrapolation to the one-electron basis set limitVarandas, A. J. C. articleopenAccess
62006Accurate MRCI study of ground-state N2H2 potential energy surfaceBiczysko, M. ; Poveda, L. A. ; Varandas, A. J. C. articleopenAccess
72012Accurate Potential Energy Surfaces and Beyond: Chemical Reactivity, Binding, Long-Range Interactions, and SpectroscopyBytautas, Laimutis; Bowman, Joel M.; Huang, Xinchuan; Varandas, António J. C. articleopenAccess
82-Oct-2003Accurate Single-Valued Double Many-Body Expansion Potential Energy Surface for Ground-State HN2Poveda, L. A. ; Varandas, A. J. C. articleopenAccess
92008Application of renormalized coupled-cluster methods to potential function of waterPiecuch, Piotr ; Wloch, Marta ; Varandas, António J. C. articleopenAccess
105-Feb-2004Are Vibrationally Excited Molecules a Clue for the “O3 Deficit Problem” and “HOx Dilemma” in the Middle Atmosphere?Varandas, A. J. C. articleopenAccess
1131-May-2001Calculation of the Rovibrational Partition Function Using Classical Methods with Quantum CorrectionsPrudente, Frederico V. ; Riganelli, Antonio ; Varandas, António J. C. articleopenAccess
122008Can extrapolation to the basis set limit be an alternative to the counterpoise correction? A study on the helium dimerVarandas, A. articleopenAccess
1315-Jun-2023Carbon-[n]Triangulenes and Sila-[n]Triangulenes: Which Are Planar?Varandas, A. J. C. articleopenAccess
142003Cone states of tri-hydrogen isotopomers and criterion for the geometric phase effectVarandas, A. J. C. ; Viegas, L. P. articleopenAccess
1527-Jun-2002A Direct Evaluation of the Partition Function and Thermodynamic Data for Water at High TemperaturesPrudente, Frederico V. ; Varandas, António J. C. articleopenAccess
167-Mar-2012Double Many-Body Expansion Potencial Energy Surfaces for NHx (x=2,3) SystemsYong Qing Li doctoralThesisopenAccess
176-Dec-2007Double many-body expansion potential energy surfaces for nitrogen-hydrogen molecular systemsPoveda Calviño, Luis Argel doctoralThesisopenAccess
182008Dynamics and kinetics of the S + HO2 reaction: A theoretical studyBallester, M. Y. ; Varandas, A. J. C. articleopenAccess
1922-Apr-2004Dynamics Study of the N(4S) + O2 Reaction and Its ReverseCaridade, P. J. B. S. ; Varandas, A. J. C. articleopenAccess
2014-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
2112-Dec-2002Dynamics Study of the O2 + HO2 Atmospheric Reaction with Both Reactants Highly Vibrationally ExcitedZhang, L. ; Varandas, A. J. C. articleopenAccess
2215-Nov-2001Dynamics Study of the O2(v) + HO2 Atmospheric ReactionZhang, Lei ; Varandas, António J. C. articleopenAccess
2310-May-2001Dynamics Study of the OH + O2 Branching Atmospheric Reaction. 2. Influence of Reactants Internal Energy in HO2 and O3 FormationCaridade, P. J. S. B. ; Zhang, L. ; Garrido, J. D. ; Varandas, A. J. C. articleopenAccess
249-Aug-2001Dynamics Study of the OH + O2 Branching Atmospheric Reaction. 3. Dissociation in Collisions of Vibrationally Excited ReactantsCaridade, P. J. S. B. ; Betancourt, M. ; Garrido, J. D. ; Varandas, A. J. C. articleopenAccess
2530-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
2628-Dec-2006Dynamics Study of the OH + O3 Atmospheric Reaction with Both Reactants Vibrationally ExcitedZhang, Lei ; Luo, Pingya ; Huang, Zhiyu ; Varandas, António J. C. articleopenAccess
2717-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
282002Existence of strictly diabatic basis sets for the two-state problemKryachko, Eugene S. ; Varandas, António J. C. articleopenAccess
292006Extrapolating potential energy surfaces by scaling electron correlation at a single geometryVarandas, A. J. C. ; Piecuch, P. articleopenAccess
3016-Oct-2008Extrapolating to the One-Electron Basis Set Limit in Polarizability CalculationsJunqueira, G. M. A. ; Varandas, A. J. C. articleopenAccess
315-May-2000First principles calculation of the potential energy surface for the lowest-quartet state of H3 and modelling by the double many-body expansion methodAbreu, P. E. ; Varandas, A. J. C. articleopenAccess
322003Forbidden transitions in benzeneBorges, I. ; Varandas, A. J. C. ; Rocha, A. B. ; Bielschowsky, C. E. articleopenAccess
3328-Feb-2008Generalized Uniform Singlet- and Triplet-Pair Extrapolation of the Correlation Energy to the One Electron Basis Set LimitVarandas, A. J. C. articleopenAccess
342004Geometric phase effect at N-fold electronic degeneracies in Jahn-Teller systemsVarandas, A. J. C. ; Xu, Z. R. articleopenAccess
3518-Oct-2007HN2(2A‘) Electronic Manifold. I. A Global ab Initio Study of First Two StatesMota, Vinícius C. ; Varandas, António J. C. articleopenAccess
3624-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
372013Implications of the O + OH reaction in hydroxyl nightglow modelingCaridade, P. J. S. B. ; Horta, J.-Z. J. ; Varandas, A. J. C. articleopenAccess
382000Is 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
392007Kinetics 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
4018-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
412013Manifestation of external field effect in time-resolved photo-dissociation dynamics of LiFMeng, Qing-Tian ; Varandas, A. J. C. articleopenAccess
422003O método das trajectórias clássicas: colisões coplanares do tipo A+BCMarques, Jorge M. C. ; Riganelli, Antonio ; Varandas, António J. C. articleopenAccess
4320-Jul-2000MRCI Calculation, Scaling of the External Correlation, and Modeling of Potential Energy Curves for HCl and OClPeña-Gallego, A. ; Abreu, P. E. ; Varandas, A. J. C. articleopenAccess
442008Møller-Plesset perturbation energies and distances for HeC20extrapolated to the complete basis set limitVarandas, A. J. C. articleopenAccess
4518-Dec-2003Nascent versus “Steady-State” Rovibrational Distributions in the Products of the O(3P) + O3(1A) ReactionCaridade, P. J. S. B. ; Llanio-Trujillo, J. L. ; Varandas, A. J. C. articleopenAccess
4619-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
472005A 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
482001Nuclear dynamics in the vicinity of a crossing seam: Vibrational spectrum of HD2 revisitedXu, Z. R. ; Varandas, A. J. C. articleopenAccess
492001OH(v)+O3: Does chemical reaction dominate over non-reactive quenching?Varandas, A. J. C. ; Zhang, L. articleopenAccess
502000On 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
512000On the interaction of two conical intersections: the H6 systemVarandas, A. J. C. ; Voronin, A. I. ; Borges, I. articleopenAccess
5218-Oct-2001On the Rovibrational Partition Function of Molecular Hydrogen at High TemperaturesRiganelli, Antonio ; Prudente, Frederico V. ; Varandas, António J. C. articleopenAccess
532002On triplet tetraoxygen: ab initio study along minimum energy path and global modellingVarandas, A. J. C. ; Llanio-Trujillo, J. L. articleopenAccess
5428-Aug-2014Photoinduced coupled twisted intramolecular charge transfer and excited-state proton transfer via intermolecular hydrogen bonding: a DFT/TD-DFT studyWang, Dandan ; Lü, Rui ; Yuan, Minghu ; Chen, Junsheng ; Feng, Liqiang ; Fu, Aiping ; Tian, Fenghui ; Varandas, António J. C. ; Chu, Tianshu articleopenAccess
552009Potential Energy Surface for Ground-State H2S via Scaling of the External Correlation, Comparison with Extrapolation to Complete Basis Set Limit, and Use in Reaction DynamicsSong, Y. Z. ; Caridade, P. J. S. B. ; Varandas, A. J. C. articleopenAccess
562012Potential energy surfaces and dynamics of atmospheric reactionsGalvão, Breno Rodrigues Lamaghere doctoralThesisopenAccess
572-Apr-2018Potential Energy Surfaces of Elemental Carbon ClustersRocha, Carlos Murilo Romero doctoralThesisopenAccess
5814-Sep-2006Predicting Catalysis: Understanding Ammonia Synthesis from First-Principles CalculationsHellman, A. ; Baerends, E. J. ; Biczysko, M. ; Bligaard, T. ; Christensen, C. H. ; Clary, D. C. ; Dahl, S. ; Harrevelt, R. van ; Honkala, K. ; Jonsson, H. ; Kroes, G. J. ; Luppi, M. ; Manthe, U. ; Nørskov, J. K. ; Olsen, R. A. ; Rossmeisl, J. ; Skúlason, E. ; Tautermann, C. S. ; Varandas, A. J. C. ; Vincent, J. K. articleopenAccess
592006A Quantum Wave Packet Dynamics Study of the N(2D) + H2 ReactionChu, Tian-Shu ; Han, Ke-Li ; Varandas, António J. C. articleopenAccess
602002A 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
6122-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
6227-Apr-2006Ro-Vibrational States of Triplet H2DAlijah, Alexander ; Varandas, António J. C. articleopenAccess
632013Roadmap to spline-fitting potentials in high dimensionsPatrício, M. ; Santos, J. L. ; Patrício, F. ; Varandas, A. J. C. articleopenAccess
6421-Jun-2001Single-Valued DMBE Potential Energy Surface for HSO: A Distributed n-Body Polynomial ApproachMartínez-Núñez, E. ; Varandas, A. J. C. articleopenAccess
6524-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
662000Singularities in the Hamiltonian at electronic degeneraciesVarandas, A. J. C. ; Xu, Z. R. articleopenAccess
6710-Oct-2002Six-Dimensional Energy-Switching Potential Energy Surface for HeHCNAnsari, Wazir-ul H. ; Varandas, António J. C. articleopenAccess
6815-May-2003Steady-State Distributions of O2 and OH in the High Atmosphere and Implications in the Ozone ChemistryVarandas, A. J. C. articleopenAccess
692000Test studies on the potential energy surface and rate constant for the OH+O3 atmospheric reactionVarandas, A. J. C. ; Zhang, L. articleopenAccess
702013The coupled 3D wave packet approach for triatomic reactive scattering in hyperspherical coordinatesAdhikari, Satrajit ; Varandas, António J.C. articleopenAccess
7118-Dec-2014Theoretical studies on the low-lying electronic states of N2O: From structural aspects to reaction dynamicsLi, Jing doctoralThesisopenAccess
727-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
7328-Jul-2008A theoretical study on the HSO2 molecular systemFurones, Maikel Yusat Ballester doctoralThesisopenAccess
742007Trajectory binning scheme and non-active treatment of zero-point energy leakage in quasi-classical dynamicsVarandas, A. J. C. articleopenAccess
7517-Mar-2005Unimolecular and Bimolecular Calculations for HN2Caridade, P. J. S. B. ; Rodrigues, S. P. J. ; Sousa, F. ; Varandas, A. J. C. articleopenAccess
762007Variational transition-state theory study of the atmospheric reaction OH + O3 → HO2+ O 2Ju, Li-Ping ; Han, Ke-Li ; Varandas, António J. C. articleopenAccess
7722-Mar-2001Vibrational Calculations for the HD2 First-Excited Electronic State Using a Coordinate-Transformation TechniqueXu, Z. R. ; Varandas, A. J. C. articleopenAccess
789-Jul-2013Vibrational Energy Transfer in N(D-2) + N-2 Collisions: A Quasiclassical Trajectory StudyGalvão, B. R. L. ; Varandas, A. J. C. ; Braga, J. P. ; Belchior, J. C. articleopenAccess
792005Vibrational relaxation of highly excited HO2 in collisions with O2Varandas, A. J. C. ; Zhang, L. articleopenAccess
802008Vibrational Relaxation of Highly Vibrationally Excited O3 in Collisions with OHZhang, Lei ; Luo, Pingya ; Huang, Zhiyu ; Chen, Hong ; Varandas, António J. C. articleopenAccess
8125-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
822005What are the Implications of Nonequilibrium in the O+OH and O+HO2 Reactions?Varandas, A. J. C. articleopenAccess