2000年2月
Formation of Ca+ (EtOH)(m) from alcohol solutions of CaCl2
JOURNAL OF PHYSICAL CHEMISTRY A
- ,
- ,
- 巻
- 104
- 号
- 6
- 開始ページ
- 1079
- 終了ページ
- 1084
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/jp992472+
- 出版者・発行元
- AMER CHEMICAL SOC
A continuous liquid flow of a calcium chloride (CaCl2) solution in ethanol (EtOH) in a vacuum (a liquid beam) was irradiated with a 266 nm laser, and ions ejected from the surface following multiphoton ionization via the CTTS (charge transfer to solvent) band of Cl- were observed by a time-of-flight mass spectrometer. A variety of core ions (Ca+, CaOEt+, CaOH+, CaCl+, Hi, etc.) are formed by reactions involving Ca2+, solvated electrons, and solvent molecules after the CTTS excitation by the laser irradiation and are ejected into vacuum with several accompanying alcohol molecules. The proposed mechanism is verified by the change of the ion intensity with introduction of an electron scavenger, CHCl3, in the solution. The cluster ion, Ca+(EtOH)(m), remains intact for m < 3, while it dissociates into CaOEt+(EtOH)(m-1) for m greater than or equal to 3. This size-dependent dissociation is simply explained by the energetics.
- リンク情報
- ID情報
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- DOI : 10.1021/jp992472+
- ISSN : 1089-5639
- Web of Science ID : WOS:000085393600001