Germanium dibromideGermanium dibromide is a bromide of germanium with the chemical formula GeBr2.PreparationGermanium dibromide can be obtained by reducing germanium tetrabromide with germanium or zinc.PropertiesGermanium dibromide is a yellow-white solid that is soluble in ethanol and acetone. It disproportionates into germanium tetrabromide and germanium. It hydrolyzes to germanium dihydroxide. Germanium dibromide is monoclinic, space group P21/c, lattice parameters a = 11.68 Å, b = 9.12 Å, c = 7.02 Å, and β = 101.9°. It can react with cyclopentadienylsodium or cyclopentadienylthallium in ether solvent to form germanocene.