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Abstract:

The third-rank electric hypershielding at the nuclei of 14 small molecules has been evaluated at the Hartree-Fock level of accuracy, by a pointwise procedure for the geometrical derivatives of magnetic susceptibilities and by a straightforward use of its definition within the Rayleigh-Schrödinger perturbation theory. The connection between these two quantities is provided by the Hellmann-Feynman theorem. The magnetically induced hypershielding at the nuclei accounts for distortion of molecular geometry caused by strong magnetic fields and for related changes of magnetic susceptibility. In homonuclear diatomics H2, N2, and F2, a field along the bond direction squeezes the electron cloud toward the center, determining shorter but stronger bond. It is shown that constraints for rotational and translational invariances and hypervirial theorems provide a natural criterion for Hartree-Fock quality of computed nuclear electric hypershielding. © 2007 American Institute of Physics.

Registro:

Documento: Artículo
Título:Calculation of the electric hypershielding at the nuclei of molecules in a strong magnetic field
Autor:Caputo, M.C.; Ferraro, M.B.; Pagola, G.I.; Lazzeretti, P.
Filiación:Departamento de Física, Facultad de Ciencias Exactes y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. I, 1428 Buenos Aires, Argentina
Dipartimento di Chimica, Università degli Studi di Modena e Reggio Emilia, Via Campi 183, 41100 Modena, Italy
Palabras clave:Electric properties; Geometrical optics; Magnetic fields; Magnetic susceptibility; Molecular orientation; Perturbation techniques; Electric hypershielding; Hartree-Fock level; Homonuclear diatomics; Molecular geometry; Molecular structure
Año:2007
Volumen:126
Número:15
DOI: http://dx.doi.org/10.1063/1.2716666
Título revista:Journal of Chemical Physics
Título revista abreviado:J Chem Phys
ISSN:00219606
CODEN:JCPSA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219606_v126_n15_p_Caputo

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Citas:

---------- APA ----------
Caputo, M.C., Ferraro, M.B., Pagola, G.I. & Lazzeretti, P. (2007) . Calculation of the electric hypershielding at the nuclei of molecules in a strong magnetic field. Journal of Chemical Physics, 126(15).
http://dx.doi.org/10.1063/1.2716666
---------- CHICAGO ----------
Caputo, M.C., Ferraro, M.B., Pagola, G.I., Lazzeretti, P. "Calculation of the electric hypershielding at the nuclei of molecules in a strong magnetic field" . Journal of Chemical Physics 126, no. 15 (2007).
http://dx.doi.org/10.1063/1.2716666
---------- MLA ----------
Caputo, M.C., Ferraro, M.B., Pagola, G.I., Lazzeretti, P. "Calculation of the electric hypershielding at the nuclei of molecules in a strong magnetic field" . Journal of Chemical Physics, vol. 126, no. 15, 2007.
http://dx.doi.org/10.1063/1.2716666
---------- VANCOUVER ----------
Caputo, M.C., Ferraro, M.B., Pagola, G.I., Lazzeretti, P. Calculation of the electric hypershielding at the nuclei of molecules in a strong magnetic field. J Chem Phys. 2007;126(15).
http://dx.doi.org/10.1063/1.2716666