Recent progress in imidoselenium chemistry is reviewed. Selenium diimides are thermally unstable and decompose forming a number of cyclic selenium imide derivatives Se3(NR)2, Se3(NR)3, Se6(NR)2, Se9(NR)6, OSe(μ-NR)2SeO, RNSe(μ-NR)2SeO, and RNSe(μ-NR)2SO2 (R = t Bu or adamantyl). All species have been structurally characterized. The experimental and theoretical evidence for the possibility of [2 + 2] cyclodimerization of selenium diimides is discussed.
Acknowledgments
Financial support from Academy of Finland is gratefully acknowledged.
Notes
a a [12].
b The active nucleus is denoted in bold.
c The citations refer to the experimental chemical shifts.