Core-dependent and ligand-dependent relativistic corrections to the nuclear magnetic shieldings in MH4−nYn (n = 0–4; M = Si, Ge, Sn, and Y = H, F, Cl, Br, I) model compounds
The nuclear magnetic shieldings of Si, Ge, and Sn in MH4−nYn (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 hydrogens by heavy-halogen atoms. We applied the linear response elimination of small components (LRESC) formalism to...
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Springer Verlag
2014
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
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| LEADER | 08827caa a22009977a 4500 | ||
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| 001 | PAPER-14525 | ||
| 003 | AR-BaUEN | ||
| 005 | 20250724111511.0 | ||
| 008 | 190411s2014 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-84919936054 | |
| 024 | 7 | |2 cas |a germanium, 7440-56-4; hydrogen, 12385-13-6, 1333-74-0; iodine, 7553-56-2; lead, 7439-92-1, 13966-28-4; proton, 12408-02-5, 12586-59-3; silicon, 7440-21-3; tin, 14314-35-3, 7440-31-5 | |
| 030 | |a JMMOF | ||
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Maldonado, A.F. | |
| 245 | 1 | 0 | |a Core-dependent and ligand-dependent relativistic corrections to the nuclear magnetic shieldings in MH4−nYn (n = 0–4; M = Si, Ge, Sn, and Y = H, F, Cl, Br, I) model compounds |
| 260 | |b Springer Verlag |c 2014 | ||
| 270 | 1 | 0 | |m Melo, J.I.; Dpto. Fisica, Facultad de Ciencias Exactas y Naturales, Univ. Buenos Aires and IFIBA-ConicetArgentina |
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| 506 | |2 openaire |e Política editorial | ||
| 520 | 3 | |a The nuclear magnetic shieldings of Si, Ge, and Sn in MH4−nYn (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 hydrogens by heavy-halogen atoms. We applied the linear response elimination of small components (LRESC) formalism to calculate those shieldings and learn whether including only a few of the leading relativistic correction terms is sufficient to be able to quantitatively reproduce the full relativistic value. It was observed that the nuclear magnetic shieldings change as the number of heavy halogen substituents and their weights vary, and the pattern of σ(M) generally does not exhibit the normal halogen dependence (NHD) behavior that can be seen in similar molecular systems containing carbon atoms. We also analyzed each relativistic correction afforded by the LRESC method and split them in two: core-dependent and ligand-dependent contributions; we then looked for the electronic mechanisms involved in the different relativistic effects and in the total relativistic value. Based on this analysis, we were able to study the electronic mechanism involved in a recently proposed relativistic effect, the “heavy atom effect on vicinal heavy atom” (HAVHA), in more detail. We found that the main electronic mechanism is the spin–orbit or σp T(3) correction, although other corrections such as σp S(1) and σp S(3) are also important. Finally, we analyzed proton magnetic shieldings and found that, for molecules containing Sn as the central atom, σ(H) decreases as the number of heavy halogen substituents (of the same type: either F, Cl, or Br) increases, albeit at different rates for different halogens. σ(H) only increase as the number of halogen substituents increases if the halogen is iodine. © 2014, Springer-Verlag Berlin Heidelberg. |l eng | |
| 593 | |a Physics Department, Natural and Exact Science Faculty, Northeastern University of Argentina, Corrientes, Argentina | ||
| 593 | |a Institute of Modelling and Innovation on Technology, IMIT, Corrientes, Argentina | ||
| 593 | |a Dpto. Fisica, Facultad de Ciencias Exactas y Naturales, Univ. Buenos Aires and IFIBA-Conicet, Buenos Aires, Argentina | ||
| 690 | 1 | 0 | |a LRESC |
| 690 | 1 | 0 | |a NMR |
| 690 | 1 | 0 | |a POLARIZATION PROPAGATORS |
| 690 | 1 | 0 | |a RELATIVISTIC EFFECTS |
| 690 | 1 | 0 | |a GERMANIUM |
| 690 | 1 | 0 | |a HALOGEN |
| 690 | 1 | 0 | |a HYDROGEN |
| 690 | 1 | 0 | |a IODINE |
| 690 | 1 | 0 | |a LEAD |
| 690 | 1 | 0 | |a LIGAND |
| 690 | 1 | 0 | |a PROTON |
| 690 | 1 | 0 | |a SILICON |
| 690 | 1 | 0 | |a TIN |
| 690 | 1 | 0 | |a ARTICLE |
| 690 | 1 | 0 | |a ATOM |
| 690 | 1 | 0 | |a ELECTRON |
| 690 | 1 | 0 | |a EXCITATION |
| 690 | 1 | 0 | |a MAGNETIC FIELD |
| 690 | 1 | 0 | |a MAGNETISM |
| 690 | 1 | 0 | |a NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY |
| 690 | 1 | 0 | |a POLARIZATION |
| 690 | 1 | 0 | |a PROTON NUCLEAR MAGNETIC RESONANCE |
| 700 | 1 | |a Aucar, G.A. | |
| 700 | 1 | |a Melo, Juan Ignacio | |
| 773 | 0 | |d Springer Verlag, 2014 |g v. 20 |k n. 9 |p J. Mol. Model. |x 16102940 |t Journal of Molecular Modeling | |
| 856 | 4 | 1 | |u https://www.scopus.com/inward/record.uri?eid=2-s2.0-84919936054&doi=10.1007%2fs00894-014-2417-z&partnerID=40&md5=f4066bcf287953271bae0443831e0f81 |y Registro en Scopus |
| 856 | 4 | 0 | |u https://doi.org/10.1007/s00894-014-2417-z |y DOI |
| 856 | 4 | 0 | |u https://hdl.handle.net/20.500.12110/paper_16102940_v20_n9_p_Maldonado |y Handle |
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