136755-50-5Relevant academic research and scientific papers
Tetraselena crown ethers: Synthesis and complexation with mercury salts. Crystal structure of a macrocycle and a mercury(II) complex
Mazouz, Ahmed,Meunier, Philippe,Kubicki, Marek M.,Hanquet, Bernard,Amardeil, Regine,Bornet, Celine,Zahidi, Assou
, p. 1043 - 1048 (2007/10/03)
Dipotassium benzene-1,2-diselenolate, C6H4(SeK)2-1,2 obtained from the reaction of potassium tert-butoxide with a (benzene-1,2-diselenolato)zirconocene, was treated with C6H4[SeCH2(CH2OCH2) nCH2X]2-1,2 (X = Cl, n = 1 1, n = 2 2, n = 3 3 or X = Br n = 3 4) leading to tetraselenacrown ethers C6H4[SeCH2(CH2OCH2) nCH2Se]2-C6H4 (n = 1 6, n = 2 7 or n = 3 8) in a moderate yield (10-20%). This yield can be increased by using the 'caesium effect' from benzene-1,2-diselenol (18-40%). These macrocyclic compounds are able to complex heavy metals [especially mercury(II) ions] via their selenium atoms. The mercury complexes have been characterized by multinuclear NMR spectroscopy. The molecular structures of the tetraselenacrown ether 7 and the mercury complex of macrocycle 8 have been established by X-ray diffraction.
SYNTHESIS OF SELENIUM-CONTAINING CROWN ETHERS AND RELATED COMPOUNDS
Mazouz, Ahmed,Bodiguel, Jacques,Meunier, Philippe,Gautheron, Bernard
, p. 247 - 249 (2007/10/02)
The synthesis of the first examples of selenium-containing crown ethers from the benzene diselenolate anion and dichalcogenated ethers is reported.The reaction is highly dependent on the experimental conditions, particularly the concentration. 1H NMR and mass spectrometry were used to confirm the structures of the new compounds. Keywords: Benzene diseleno crown ethers; benzene diselenopolyethers; 1H NMR
