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Opis

The optimized synthesis of acyclic dialkoxy§disulfides and aromatic polysulfides is described and§their physical properties probed. In particular, the§origin of the high barrier to rotation in the§dialkoxy disulfides was determined to be due to a§generalized anomeric effect. The origin of the high§rotational barrier was also verified experimentally.§ Complimentary to this thermal process, the§decomposition of dialkoxy disulfides was also§investigated. §§Theoretical modeling on the relative ground state§energies of dialkoxy disulfides is also described. §It has been ascertained that the equilibrium position§between the two isomers can be influenced by the ring§size of the molecule; larger rings promote the§dialkoxy disulfide isomer. These modeling studies§were successfully corroborated experimentally. §§The kinetics of desulfurization of acyclic aromatic§tri- and tetrasulfides is described. Tetrasulfides§were found to transfer a sulfur atom to§triphenylphosphine over ten times faster than their§trisulfide analogues.

Szczegóły książki

• Pełny tytuł: The Chemical and Physical Properties of Polychalcogens
• Podtytuł: Dialkoxydisulfides, Thionosulfites and Polysulfides
• Autor: Eli Zysman-Colman
• Język: Angielski
• Oprawa: Miękka
• Liczba stron: 500
• EAN: 9783639148954
• ID: 06823449
• Wydawca: VDM Verlag Dr. Müller
• Waga: 758 g
• Wymiary: 218 × 149 × 32 mm
• Rok wydania: 2009

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