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Chemiluminescence of CaCl From the Ca+Cl 2 Reaction in Argon Matrix
Author(s) -
Guo SuiWhei,
Chang JuWei,
Lee YuanPern
Publication year - 1985
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.198500035
Subject(s) - chemistry , chemiluminescence , argon , excited state , radical , matrix (chemical analysis) , analytical chemistry (journal) , wavelength , energy transfer , atomic physics , photochemistry , molecular physics , optics , physics , organic chemistry , chromatography
Visible chemiluminescence in the 5800‐6600 Å region was observed from the Ca+Cl 2 reaction in an argon matrix. The longer wavelength doublet progression is assigned as the A 2 Π 3/2, 1/2 → X 2 Σ + transition of CaCl, with v 00 = 16189 and 16126 cm −1 , respectively. Emission from the vibrationally excited v ' = 1 level of the A state was also observed. This is the first observation of resolved spin‐orbit components in matrix chemiluminescent reactions. The progression with v 00 =16855 cm −1 was assigned as the B 2 Σ + → X 2 Σ + transition of CaCl. Both transitions showed very small matrix shifts in the T 2 values. A weak band at 17185 cm −1 was assigned as either the E 2 Σ→ B 2 Σ + or the a 4 Σ + → A 2 Π transition of CaCl. Ca atomic emission at 4232 and 6574 Å was also observed and it was attributed to the energy transfer processes from excited CaCl radicals.