| Abstract: | KInBr3, the first ternary indium bromide containing divalent indium, is synthesized from InBr3, KBr, and elemental In at 450 °C. Its trigonal crystal structure (a = b = 853.24(1) pm, c = 1077.76(2) pm; P3¯; Z = 4) has been solved and refined from X-ray powder data. Indium atoms of oxidation state two are found in an [In2Br6]2– unit with ecliptic ethane structure while potassium ions are located in two different polyhedra. There is an octahedral coordination by bromine anions for half of the K+ whereas the other K+ cations are located in trigonal Br– prisms, tricapped by three additional Br– anions. |
