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
 
 
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Status
UC Researcher
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Publications
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Date Issued:  [2000 TO 2024]
Author:  Varandas, António J. C.

Results 1-76 of 76 (Search time: 0.003 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
162008Dynamics and kinetics of the S + HO2 reaction: A theoretical studyBallester, M. Y. ; Varandas, A. J. C. articleopenAccess
1722-Apr-2004Dynamics Study of the N(4S) + O2 Reaction and Its ReverseCaridade, P. J. B. S. ; Varandas, A. J. C. articleopenAccess
1814-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
1912-Dec-2002Dynamics Study of the O2 + HO2 Atmospheric Reaction with Both Reactants Highly Vibrationally ExcitedZhang, L. ; Varandas, A. J. C. articleopenAccess
2015-Nov-2001Dynamics Study of the O2(v) + HO2 Atmospheric ReactionZhang, Lei ; Varandas, António J. C. articleopenAccess
2110-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
229-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
2330-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
2428-Dec-2006Dynamics Study of the OH + O3 Atmospheric Reaction with Both Reactants Vibrationally ExcitedZhang, Lei ; Luo, Pingya ; Huang, Zhiyu ; Varandas, António J. C. articleopenAccess
2517-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
262002Existence of strictly diabatic basis sets for the two-state problemKryachko, Eugene S. ; Varandas, António J. C. articleopenAccess
272006Extrapolating potential energy surfaces by scaling electron correlation at a single geometryVarandas, A. J. C. ; Piecuch, P. articleopenAccess
2816-Oct-2008Extrapolating to the One-Electron Basis Set Limit in Polarizability CalculationsJunqueira, G. M. A. ; Varandas, A. J. C. articleopenAccess
295-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
302003Forbidden transitions in benzeneBorges, I. ; Varandas, A. J. C. ; Rocha, A. B. ; Bielschowsky, C. E. articleopenAccess
3128-Feb-2008Generalized Uniform Singlet- and Triplet-Pair Extrapolation of the Correlation Energy to the One Electron Basis Set LimitVarandas, A. J. C. articleopenAccess
322004Geometric phase effect at N-fold electronic degeneracies in Jahn-Teller systemsVarandas, A. J. C. ; Xu, Z. R. articleopenAccess
3318-Oct-2007HN2(2A‘) Electronic Manifold. I. A Global ab Initio Study of First Two StatesMota, Vinícius C. ; Varandas, António J. C. articleopenAccess
3424-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
352013Implications of the O + OH reaction in hydroxyl nightglow modelingCaridade, P. J. S. B. ; Horta, J.-Z. J. ; Varandas, A. J. C. articleopenAccess
362000Is 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
372007Kinetics 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
3818-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
392013Manifestation of external field effect in time-resolved photo-dissociation dynamics of LiFMeng, Qing-Tian ; Varandas, A. J. C. articleopenAccess
402003O método das trajectórias clássicas: colisões coplanares do tipo A+BCMarques, Jorge M. C. ; Riganelli, Antonio ; Varandas, António J. C. articleopenAccess
4120-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
422008Møller-Plesset perturbation energies and distances for HeC20extrapolated to the complete basis set limitVarandas, A. J. C. articleopenAccess
4318-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
4419-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
452005A 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
462001Nuclear dynamics in the vicinity of a crossing seam: Vibrational spectrum of HD2 revisitedXu, Z. R. ; Varandas, A. J. C. articleopenAccess
472001OH(v)+O3: Does chemical reaction dominate over non-reactive quenching?Varandas, A. J. C. ; Zhang, L. articleopenAccess
482000On 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
492000On the interaction of two conical intersections: the H6 systemVarandas, A. J. C. ; Voronin, A. I. ; Borges, I. articleopenAccess
5018-Oct-2001On the Rovibrational Partition Function of Molecular Hydrogen at High TemperaturesRiganelli, Antonio ; Prudente, Frederico V. ; Varandas, António J. C. articleopenAccess
512002On triplet tetraoxygen: ab initio study along minimum energy path and global modellingVarandas, A. J. C. ; Llanio-Trujillo, J. L. articleopenAccess
5228-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
532009Potential 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
5414-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
552006A Quantum Wave Packet Dynamics Study of the N(2D) + H2 ReactionChu, Tian-Shu ; Han, Ke-Li ; Varandas, António J. C. articleopenAccess
562002A 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
5722-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
5827-Apr-2006Ro-Vibrational States of Triplet H2DAlijah, Alexander ; Varandas, António J. C. articleopenAccess
592013Roadmap to spline-fitting potentials in high dimensionsPatrício, M. ; Santos, J. L. ; Patrício, F. ; Varandas, A. J. C. articleopenAccess
6021-Jun-2001Single-Valued DMBE Potential Energy Surface for HSO: A Distributed n-Body Polynomial ApproachMartínez-Núñez, E. ; Varandas, A. J. C. articleopenAccess
6124-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
622000Singularities in the Hamiltonian at electronic degeneraciesVarandas, A. J. C. ; Xu, Z. R. articleopenAccess
6310-Oct-2002Six-Dimensional Energy-Switching Potential Energy Surface for HeHCNAnsari, Wazir-ul H. ; Varandas, António J. C. articleopenAccess
6415-May-2003Steady-State Distributions of O2 and OH in the High Atmosphere and Implications in the Ozone ChemistryVarandas, A. J. C. articleopenAccess
652000Test studies on the potential energy surface and rate constant for the OH+O3 atmospheric reactionVarandas, A. J. C. ; Zhang, L. articleopenAccess
662013The coupled 3D wave packet approach for triatomic reactive scattering in hyperspherical coordinatesAdhikari, Satrajit ; Varandas, António J.C. articleopenAccess
677-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
682007Trajectory binning scheme and non-active treatment of zero-point energy leakage in quasi-classical dynamicsVarandas, A. J. C. articleopenAccess
6917-Mar-2005Unimolecular and Bimolecular Calculations for HN2Caridade, P. J. S. B. ; Rodrigues, S. P. J. ; Sousa, F. ; Varandas, A. J. C. articleopenAccess
702007Variational transition-state theory study of the atmospheric reaction OH + O3 → HO2+ O 2Ju, Li-Ping ; Han, Ke-Li ; Varandas, António J. C. articleopenAccess
7122-Mar-2001Vibrational Calculations for the HD2 First-Excited Electronic State Using a Coordinate-Transformation TechniqueXu, Z. R. ; Varandas, A. J. C. articleopenAccess
729-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
732005Vibrational relaxation of highly excited HO2 in collisions with O2Varandas, A. J. C. ; Zhang, L. articleopenAccess
742008Vibrational Relaxation of Highly Vibrationally Excited O3 in Collisions with OHZhang, Lei ; Luo, Pingya ; Huang, Zhiyu ; Chen, Hong ; Varandas, António J. C. articleopenAccess
7525-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
762005What are the Implications of Nonequilibrium in the O+OH and O+HO2 Reactions?Varandas, A. J. C. articleopenAccess