Abstract: | Inhaltsübersicht. Einkristalle von NaInBr4 und NaInI4 erhält man aus Gemengen der binären Komponenten durch langsames Abkühlen der Schmelze. NaInBr4 gehört zum NaAlCl4-Typ: Orthorhombisch, P212121, Z = 4; a = 1108,1(1); b = 1050,7(1); c = 676,1(1) pm. NaInI4 ist isotyp mit LiAlCl4: Monoklin, P21/c, Z = 4; a = 852,1(2); b = 766,1(2); c = 1558,3(3) pm; β = 92,65(2)°. In beiden Strukturen treten annähernd tetraedrische Baugruppen [InX4]– (X = Br, I) auf. Die Koordinationszahl von Na+ ist C.N. = 6 (NaInI4; leicht verzerrt oktaedrisch) bzw. C.N. = 6+1+1 (NaInBr4; verzerrtes, doppelt bekapptes Prisma). Synthesis and Crystal Structures of NaInBr4 and NaInI4 Single crystals of NaInBr4 and NaInI4 are obtained from mixtures of the binary components by slow cooling of the melts. NaInBr4 belongs to the NaAlCl4 type of structure: Ortho-rhombic, P212121, Z = 4, a = 1108.1(1), b = 1050.7(1), c = 676.1(1) pm. NaInI4 is isotypic with LiAlCl4: Monoclmic, P21/c, Z = 4, a = 852.1(2), b = 766.1(2), c = 1558.3(3) pm, β = 92.65(2)°. Almost tetrahedral polyhedra [InX4]– (X = Br, I) are characteristic for both structures. The coordination number of Na+ is C.N. = 6 (NaInI4; slightly distorted octahedron) and C.N. = 6+1+1 (NaInBr4; distorted bicapped trigonal prism), respectively. |