Synthesis, structure, and properties of the new mixed-valent dodecahalogenotrimetallate In4Ti3Br12 and its relation to compounds A3Ti2X9 (A = K, In; X = Cl, Br).

Black single crystals of the new dodecahalogenotrimetallate In(4)Ti(3)Br(12) were obtained by reacting InBr(3) with Ti-wire at 450 °C in a silica tube sealed under vacuum. In(4)Ti(3)Br(12) (Pearson symbol hR57, space group R3m, Z = 3, a = 7.3992(8) Å, c = 36.