Electrospray ionization mass spectrometric analysis of chemical reactions of dissolution of selenium in strongly basic amines.
When elemental selenium was added to a strongly basic amine, 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) or 1,5-diazabicyclo[4.3.0]non-5-ene (DBN), the selenium started to dissolve and the solution turned dark brown. We investigated the chemical reaction of this selenium dissolution process by electrospray ionization mass spectrometry (ESI-MS). The study reveals for the first time that cleavage of Se-Se bonds by the amine initiates the reaction to form molecular Se2, which then abstracts hydrogen from the amine molecule. ESI-MS with the use of a nanospray technique was shown to be a useful tool for studying the dissolution of elements in strongly basic or acidic solvents.
Arakawa
Ryuichi
R
Department of Applied Chemistry, Kansai University, Suita, Osaka 564-8680, Japan. arak@ipcku.kansai-u.ac.jp
Sasao
Ai
A
Sonoda
Noboru
N
D019086:Bridged Bicyclo Compounds, Heterocyclic / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D012643:Selenium / Q000737:chemistry*; D012995:Solubility; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*
D019086:Bridged Bicyclo Compounds, Heterocyclic; C013554:1,5-diazabicyclo(4.3.0)non-5-ene; C031033:1,8-diazabicyclo(5.4.0)undec-7-ene; D012643:Selenium