Polarization propagators: A powerful theoretical tool for a deeper understanding of NMR spectroscopic parameters

…, RH Romero, AF Maldonado - International Reviews in …, 2010 - Taylor & Francis
Magnetic molecular spectroscopic properties, like NMR J-coupling and magnetic shielding σ,
have been studied by non-relativistic quantum methods since their discovery. When they …

The UKB prescription and the heavy atom effects on the nuclear magnetic shielding of vicinal heavy atoms

AF Maldonado, GA Aucar - Physical Chemistry Chemical Physics, 2009 - pubs.rsc.org
Fully relativistic calculations of NMR magnetic shielding on XYH3 (X = C, Si, Ge and Sn; Y =
Br, I), XHn (n = 1–4) molecular systems and noble gases performed with a fully relativistic …

Relativistic and electron-correlation effects on the nuclear magnetic resonance shieldings of molecules containing tin and lead atoms

AF Maldonado, GA Aucar - The Journal of Physical Chemistry A, 2014 - ACS Publications
The reference values for NMR magnetic shieldings, σ ref , are of the highest importance
when theoretical analysis of chemical shifts are envisaged. The fact that the nonrelativistically …

Relativistic effects on group-12 metal nuclear shieldings

J Roukala, AF Maldonado, J Vaara, GA Aucar… - Physical Chemistry …, 2011 - pubs.rsc.org
The leading-order perturbation theory approach to relativistic effects on the nuclear
magnetic shielding provides an economic method for obtaining the chemical shifts in heavy-element …

Foundations of the LRESC model for response properties and some applications

…, JI Melo, IA Aucar, AF Maldonado - International Journal of …, 2018 - Wiley Online Library
Accurate calculations of some response properties, like the NMR spectroscopic parameters,
are quite exigent for the theoretical quantum chemistry models together with the …

Microsolvation of methylmercury: structures, energies, bonding and NMR constants (199 Hg, 13 C and 17 O)

E Flórez, AF Maldonado, GA Aucar, J David… - Physical Chemistry …, 2016 - pubs.rsc.org
Hartree–Fock (HF) and second order perturbation theory (MP2) calculations within the scalar
and full relativistic frames were carried out in order to determine the equilibrium geometries …

Theoretical developments and applications of polarization propagators

GA Aucar, AF Maldonado, MDA Montero… - … Journal of Quantum …, 2019 - Wiley Online Library
The Argentinian studies of response properties by applying polarization propagators started
more than 35 years ago. It began when the research group led by Professor Ruben …

… ligand-dependent relativistic corrections to the nuclear magnetic shieldings in MH4−n Y n (n = 0–4; M = Si, Ge, Sn, and Y = H, F, Cl, Br, I …

AF Maldonado, GA Aucar, JI Melo - Journal of molecular modeling, 2014 - Springer
The nuclear magnetic shieldings of Si, Ge, and Sn in MH 4−n Y n (M = Si, Ge, Sn; Y = F, Cl,
Br, I and n = 1–4) molecular systems are highly influenced by the substitution of one or more …

NMR Magnetic Shielding in Transition Metal Compounds Containing Cadmium, Platinum, and Mercury

AD Zapata-Escobar, AF Maldonado… - Magnetochemistry, 2023 - mdpi.com
In this article, we delve into the intricate behavior of electronic mechanisms underlying NMR
magnetic shieldings σ in molecules containing heavy atoms, such as cadmium, platinum, …

Coordination of Mercury(II) in Water Promoted over Hydrolysis in Solvated Clusters [Hg(H2O)1–6](aq)2+: Insights from Relativistic Effects and Free Energy Analysis

…, Y Chamorro, AF Maldonado - The Journal of …, 2023 - ACS Publications
Understanding the nature of the interaction between mercury(II) ions, Hg 2+ , and water
molecules is crucial to describe the stability and chemical behavior of structures formed during …