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Abstract:

A transformation of the transverse Coulomb vector potential was implemented to calculate molecular magnetic properties via the random-phase approximation (RPA) within the framework of a "longitudinal gauge." In this gauge, the diamagnetic contribution to magnetic susceptibility is a tensor with equal diagonal components as in atoms, irrespective of molecular symmetry, whereas diagonal and average diamagnetic contributions to the nuclear magnetic shielding are the same as in the Coulomb gauge. Near-Hartree-Fock magnetic susceptibility and nuclear magnetic shielding tensors were evaluated for a set of small molecules, HF, H2O, NH3, and CH2, employing extended Gaussian basis sets. The peculiar features of the longitudinal gauge, and the fulfillment of a series of sum rules involving the virial operator, which must be satisfied to guarantee gauge invariance of total magnetic tensors, were exploited to check the degree of convergence of theoretical values and to estimate the corresponding Hartree-Fock limit for the properties. © 1998 John Wiley & Sons, Inc.

Registro:

Documento: Artículo
Título:Calculation of magnetic properties of HF, H2O, NH2 and CH4 molecules using a longitudinal gauge for the vector potential
Autor:Ferraro, M.B.; Caputo, M.C.; Varela, M.P.B.; Lazzeretti, P.
Filiación:Departamento de Fisica, Fac. de Ciencias Exactes y Naturales, Ciudad Universitaria, Pab. 1, (1428) Buenos Aires, Argentina
Dipartimento di Chimica, Univ. degli Studi di Modena, Via Campi 183, 41100 Modena, Italy
Palabras clave:Gauge invariance; Magnetic shielding tensor; Magnetic susceptibility
Año:1998
Volumen:66
Número:1
Página de inicio:31
Página de fin:45
DOI: http://dx.doi.org/10.1002/(SICI)1097-461X(1998)66:1<31::AID-QUA4>3.0.CO;2-0
Título revista:International Journal of Quantum Chemistry
Título revista abreviado:Int J Quantum Chem
ISSN:00207608
CODEN:IJQCB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00207608_v66_n1_p31_Ferraro

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Citas:

---------- APA ----------
Ferraro, M.B., Caputo, M.C., Varela, M.P.B. & Lazzeretti, P. (1998) . Calculation of magnetic properties of HF, H2O, NH2 and CH4 molecules using a longitudinal gauge for the vector potential. International Journal of Quantum Chemistry, 66(1), 31-45.
http://dx.doi.org/10.1002/(SICI)1097-461X(1998)66:1<31::AID-QUA4>3.0.CO;2-0
---------- CHICAGO ----------
Ferraro, M.B., Caputo, M.C., Varela, M.P.B., Lazzeretti, P. "Calculation of magnetic properties of HF, H2O, NH2 and CH4 molecules using a longitudinal gauge for the vector potential" . International Journal of Quantum Chemistry 66, no. 1 (1998) : 31-45.
http://dx.doi.org/10.1002/(SICI)1097-461X(1998)66:1<31::AID-QUA4>3.0.CO;2-0
---------- MLA ----------
Ferraro, M.B., Caputo, M.C., Varela, M.P.B., Lazzeretti, P. "Calculation of magnetic properties of HF, H2O, NH2 and CH4 molecules using a longitudinal gauge for the vector potential" . International Journal of Quantum Chemistry, vol. 66, no. 1, 1998, pp. 31-45.
http://dx.doi.org/10.1002/(SICI)1097-461X(1998)66:1<31::AID-QUA4>3.0.CO;2-0
---------- VANCOUVER ----------
Ferraro, M.B., Caputo, M.C., Varela, M.P.B., Lazzeretti, P. Calculation of magnetic properties of HF, H2O, NH2 and CH4 molecules using a longitudinal gauge for the vector potential. Int J Quantum Chem. 1998;66(1):31-45.
http://dx.doi.org/10.1002/(SICI)1097-461X(1998)66:1<31::AID-QUA4>3.0.CO;2-0