First structural evidence of a Se–Br–Br halogen-bonded molecular complex†
Abstract
The halogenation of 2,6-dibromo-9-selenabicyclo[3.3.1]-nonane 1 with 1 equivalent of molecular dihalogens (Br2 and I2) afforded a 1 : 1 molecular complex 1–X2 (X = Br (2); X = I (3)), while an excess of Br2 resulted in the ionic species [C8H12Br2SeBr]Br5− (4). X-ray crystallographic data and the nature of Se⋯Br non-covalent bonding in the solid state and solution is discussed.
- This article is part of the themed collection: Selenium & Tellurium chemistry at the beginning of the 3rd millennium: a celebration of ICCST