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
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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
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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
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Volumen: | 126
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Número: | 15
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DOI: |
http://dx.doi.org/10.1063/1.2716666 |
Título revista: | Journal of Chemical Physics
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Título revista abreviado: | J Chem Phys
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ISSN: | 00219606
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CODEN: | JCPSA
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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