Selenium dibromide explained

Selenium dibromide is a compound made of one selenium and two bromine atoms. It is unstable. No solid form of the compound has been discovered but it is a component of the equilibria in the vapour above selenium tetrabromide and in nonaqueous solutions. In acetonitrile solution, selenium reacts with to form an equilibrium mixture containing, and .^[1] This covalent compound has a bent molecular geometry in the gas phase.^[2]

Notes and References

1. Ralf . Steudel . Detlef . Jensen . Frank . Baumgart . ⁷⁷Se-NMR and raman spectroscopic characterization of selenium dibromide (SeBr₂) and its reaction with titanocene pentasulphide to give cyclic selenium sulphides of ring size 6, 7, 8, and 12 . Polyhedron . 9 . 9 . 1990 . 1199–1208 . 10.1016/S0277-5387(00)86896-5 .
2. Shlykov . Sergey A. . Titov . Anton V. . Oberhammer . Heinz . Giricheva . Nina I. . Girichev . Georgiy V. . The molecular structure of selenium dibromide as determined by combined gas-phase electron diffraction–mass spectrometric experiments and quantum chemical calculations . Phys. Chem. Chem. Phys. . 2008 . 10 . 42 . 6438–6445 . 10.1039/B808071B . 18972032 . 2008PCCP...10.6438S .