Front Cover: Formation of Cyclic Selenium Imides via Acyclic Selenium Imide Chlorides in Cyclocondensation of Selenium Dichloride with tert-Butylamine (Eur. J. Inorg. Chem. 28/2025)

Abstract

The Front Cover describes the cyclic organic selenium imides and acyclic imidoselenium chlorides that have been isolated and identified upon cyclocondensation of SeCl₂ and tBuNH₂. The name selenium is derived from selene, the Greek name for the Moon. In their Research Article (DOI: 10.1002/ejic.202500292), H. M. Tuononen, R. S. Laitinen and co-workers present detailed DFT calculations that describe the complicated reaction route in terms of elementary steps involving key intermediate formation, chain extension, and ring closure, in a similar manner to what has been proposed for the formation of cyclophosphazanes and -phosphazenes. Some steps also involve redox processes.