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Binding Energies of Aromatic 1:1 Hetero‐Clusters in a Supersonic Jet
Author(s) -
Haas Yehuda,
Kendler Shai
Publication year - 1997
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.199700048
Subject(s) - chemistry , van der waals force , ionization , excited state , binding energy , jet (fluid) , fluorescence , supersonic speed , atomic physics , ground state , ionic bonding , molecule , argon , yield (engineering) , chemical physics , photochemistry , ion , organic chemistry , thermodynamics , physics , quantum mechanics
Methods used to experimentally estimate the binding energies of van der Waals clusters containing an aromatic molecule are surveyed. These include microwave and infrared absorption spectroscopies, single and two photon ionization, dispersed fluorescence, and stimulated emission pumping. The problems encountered in the application of these methods are briefly discussed, and prospects for the firm establishment of the binding energies are assessed. Although the present database is too small for firm conclusions, methods based on dispersed fluorescence (i.e., probing the excited state surface) tend to yield lower values for argon adducts than those based on ionization, probing the ground state, or ionic surfaces. A mechanism that may account for this tendency is proposed, and further experiments are proposed to test it.