Browsing by Author "Acevedo, R."
Now showing items 1-12 of 12
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Acevedo, R.; Díaz, G. (1986)A full normal coordinate analysis for the Cr(CN)3− 6 ion, in octahedral symmetry, has been carried out on the basis of new experimental data, using three different force fields. Consistent sets of force constants have been ...
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Acevedo, R.; Muñoz, G.; Meruane, T. (Sociedad Mexicana de Fisica, 2001)The luminiscence spectrum of the Cs2SnBr6:OsBr2-6 system is examined utilizing a generalized vibronic formalisms. For illustrative purposes we have chosen the most characteristic excitations, which show up a rich and ...
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Acevedo, R.; Diaz, G. (1986)A normal coordinates analysis for the M(NH3)42+ complex ions iN Td symmetry (M = Zn, Cd, Co) and in D4h symmetry (M = Cu, Pd, Pt) has been undertaken on the basis of a General Valence Force Field (GVFF), using simplified ...
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Acevedo, R.; Vásquez, S. O.; Meruane, T.; Poblete, V.; Pozo, J. (Sociedad Mexicana de Fisica, 1998)The well-resolved emission and absorption spectra of centrosymmetric coordination compounds of the transition metal ions have been used widely to provide the experimental data against which to test theoretical models of ...
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Acevedo, R.; Meruane, T.; Poblete, V. (Sociedad Mexicana de Fisica, 1998)The visible and near infrared luminescence spectra of MoCl63- in Cs2NaMCl6 (M=Sc, Y, ln) and MoBr63- in Cs2NaYBr6 have been reported between 15 000 cm-1 and 3000 cm-1 at liquid helium temperatures. It has been observed ...
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Acevedo, R.; Hurtado, O.; Meruane, T.; Navarro, Gonzalo; Díaz, V.; Pozo, J. (Sociedad Mexicana de Fisica, 1998)The optical properties of Cs2NaEuCl6 system are reinvestigated on the basis of new and updated experimental data from Raman, electronic Raman, Infrared absorption and visible luminescence. These experimental studies have ...
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Poblete, V.; Acevedo, R.; Tanner, P. A. (Sociedad Mexicana de Fisica, 1998)The stoichiometric elpasolites of the type Cs2NaLnCl6 are known to belong to the space group Fm3m(script O signh 5). The structural data of these elpasolites is both scare and rather limited and therefore a throughout ...
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Poblete, V.; Acevedo, R. (Sociedad Mexicana de Fisica, 1998)In this research work, we report the synthesis and structural characterization of the stoichiometric elpasolite Cs2NaSmCl6. The synthesis was performed under a solid state reaction in nitrogen atmosphere from the chemicals ...
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Acevedo, R.; Flint, C. D.; Meruane, T.; Muñoz, G.; Passman, M.; Poblete, V. (Elsevier, 1997)A symmetry adapted formalism to evaluate the vibronic intensities induced by the ungerade vibrational modes in centrosymmetric coordination compounds of the rare earths is put forward and applied to several selected ...
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Acevedo, R.; Vasquez, S. O.; Flint, C. D. (1991)The relative intensities of about 90 of the more prominent vibronic bands in the2Eg →4A2g luminescence spectrum of the MnF2-6 ion in Cs2SiF6 have been measured at 80 K. The reported intensities cover a range of more than ...
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Acevedo, R.; Vasquez, S. O.; Flint, C. D. (1991)A method to estimate the contribution to the vibronic intensity in electronic transitions of inorganic complex ions due to second order terms in the Herzberg-Teller expansion of vibronic wavefunctions is developed and ...
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Acevedo, R.; Diaz, G.; Letelier, J. R.; Flint, C. D. (1990)The vibronic intensities of the vibronic origins due to the three odd-parity vibrational modes of the Г8(2T2g) Г8(4A2g) electronic transition of the ReBr2-6 ion are calculated using both crystal-field and ligand-polarization ...