Artículos de revistas
Intensidades espectrales en compuestos de coordinación de los metales de transición: aplicaciones a sistemas del tipo Cs2SnBr6: OsBr26
Autor
ACEVEDO , R.
MUÑOZ , G.
MERUANE , T.
Institución
Resumen
EL ESPECTRO DE LUMINISCENCIA DEL SISTEMA CS-2 SNBR6:OSBR2-6 ES EXAMINADO UTILIZANDO UN FORMALISMO VIBRÓNICO GENERALIZADO. PARA EFECTOS ILUSTRATIVOS HEMOS ESCOGIDO LAS EXCITACIONES MÁS CARACTERÍSTICAS, LAS CUALES EXHIBEN UNA RIQUÍSIMA ESTRUCTURA VIBRÓNICA Y DISTRIBUCIONES DE INTENSIDADES NO ESPERADAS. ESTAS ABSORCIONES SON ANALIZADAS CON ÉNFASIS EN LOS FACTORES ELECTRÓNICOS Y VIBRACIONALES QUE DETERMINAN LAS INTENSIDADES ESPECTRALES GLOBALES Y LAS DISTRIBUCIONES RELATIVAS DE INTENSIDADES ASOCIADAS A TRANSICIONES ELECTRÓNICAS GENÉRICAS DE LA FORMA TM = R-+ VK (K = 3,4,6). LAS BONDADES Y DESVENTAJAS DE LOS MÉTODOS DE CÁLCULO COMO TAMBIÉN UN ESTUDIO CRÍTICO DE LOS DATOS EXPERIMENTALES DISPONIBLES ES UNO DE LOS OBJETIVOS CENTRALES DE ESTE TRABAJO. CONCLUSIONES RELEVANTES CON RELACIÓN A LOS MECANISMOS DE INTENSIDADES ESPECTRALES COMO TAMBIÉN A ACOPLAMIENTOS DE VIBRACIONES INTERNAS Y EXTERNAS SON OBTENIDAS Y SUGERIDAS PARA MEJORAR NUESTRA COMPRENSIÓN DE ESTOS COMPLEJOS PROCESOS.AbstractTHE 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 UNEXPECTED VIBRONIC STRUCTURES. THESE ABSORPTIONS ARE TACKLED WITH EMPHASIS ON BOTH THE ELECTRONIC AND THE VIBRATIONAL FACTORS WHICH ARE RESPONSIBLE FOR BOTH THE OVERALL AND THE RELA TIVE VIBRONIC INTENSITIES ASSOCIATED WITH GENERIC TRANSITIONS OF THE -M = -1 + VK (K = 3, 4, 6) TYPE. THE ADVANTAGES AND DISAVANTAGES OF THE CALCULATION MODEL AS WELL AS A CRITICAL STUDIES OF THE EXPERIMENTAL DATA AVAILABLE ARE DISCUSSED. RELEVANT CONCLUSIONS ARE DRAWN OUT IN CONECTION WITH THE INTENSITY SPECTRAL MECHANISM AS WELL AS THE EVENTUAL INFLUENCE ON THE CALCULATED INTENSITIES DUE TO THE COUPLING AMONG THE INTERNAL AND THE ESTERNAL VIBRATIONS AND SOME SUGGESTIONS FOR IMPROVEMENTS ARE PUT FORWARD TO ADVANCE THE STATE OF THE ART IN THE VIBRONIC COUPLING THEORY. 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 UNEXPECTED VIBRONIC STRUCTURES. THESE ABSORPTIONS ARE TACKLED WITH EMPHASIS ON BOTH THE ELECTRONIC AND THE VIBRATIONAL FACTORS WHICH ARE RESPONSIBLE FOR BOTH THE OVERALL AND THE RELA TIVE VIBRONIC INTENSITIES ASSOCIATED WITH GENERIC TRANSITIONS OF THE -M = -1 VK (K = 3, 4, 6) TYPE. THE ADVANTAGES AND DISAVANTAGES OF THE CALCULATION MODEL AS WELL AS A CRITICAL STUDIES OF THE EXPERIMENTAL DATA AVAILABLE ARE DISCUSSED. RELEVANT CONCLUSIONS ARE DRAWN OUT IN CONECTION WITH THE INTENSITY SPECTRAL MECHANISM AS WELL AS THE EVENTUAL INFLUENCE ON THE CALCULATED INTENSITIES DUE TO THE COUPLING AMONG THE INTERNAL AND THE ESTERNAL VIBRATIONS AND SOME SUGGESTIONS FOR IMPROVEMENTS ARE PUT FORWARD TO ADVANCE THE STATE OF THE ART IN THE VIBRONIC COUPLING THEORY.