TY - JOUR
T1 - Intensity enhancement of symmetry forbidden transitions in solid solutions of benzene and naphthalene
AU - Lubart, Rachel
AU - Lindner, Malka Brith
PY - 1982
Y1 - 1982
N2 - Intensity enhancement of symmetry forbidden transitions in solid solutions of benzene and naphthalene has been measured at various temperatures. The effect, which consists essentially in allowing electronically forbidden transitions as a result of intermolecular interactions is attributed to two factors: 'self-borrowing' and 'solvent borrowing'. Their relative contribution depends on the site symmetry of the solvent, thus explaining the marked intensity change in absorption of the 'forbidden bands' observed in phase transitions. 'Forbidden bands' were detected in the 1A1g→1B2u transition and not in the 1A1g→1B1u transition and a qualitative explanation for this difference is presented.
AB - Intensity enhancement of symmetry forbidden transitions in solid solutions of benzene and naphthalene has been measured at various temperatures. The effect, which consists essentially in allowing electronically forbidden transitions as a result of intermolecular interactions is attributed to two factors: 'self-borrowing' and 'solvent borrowing'. Their relative contribution depends on the site symmetry of the solvent, thus explaining the marked intensity change in absorption of the 'forbidden bands' observed in phase transitions. 'Forbidden bands' were detected in the 1A1g→1B2u transition and not in the 1A1g→1B1u transition and a qualitative explanation for this difference is presented.
UR - https://www.scopus.com/pages/publications/49049144187
U2 - 10.1016/0584-8539(82)80120-7
DO - 10.1016/0584-8539(82)80120-7
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AN - SCOPUS:49049144187
SN - 0584-8539
VL - 38
SP - 953
EP - 959
JO - Spectrochimica Acta - Part A Molecular Spectroscopy
JF - Spectrochimica Acta - Part A Molecular Spectroscopy
IS - 8
ER -