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Synthese und Kristallstrukturen von IMalnBr 4 und NaInI 4
Author(s) -
Staffel Thomas,
Meyer Gerd
Publication year - 1989
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.655740111
Subject(s) - crystallography , octahedron , crystal structure , chemistry , stereochemistry
Inhaltsübersicht. Einkristalle von NaInBr 4 und NaInI 4 erhält man aus Gemengen der binären Komponenten durch langsames Abkühlen der Schmelze. NaInBr 4 gehört zum NaAlCl 4 ‐Typ: Orthorhombisch, P2 1 2 1 2 1 , Z = 4; a = 1108,1(1); b = 1050,7(1); c = 676,1(1) pm. NaInI 4 ist isotyp mit LiAlCl 4 : Monoklin, P2 1 /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 [InX 4 ] – (X = Br, I) auf. Die Koordinationszahl von Na + ist C.N. = 6 (NaInI 4 ; leicht verzerrt oktaedrisch) bzw. C.N. = 6+1+1 (NaInBr 4 ; verzerrtes, doppelt bekapptes Prisma). Synthesis and Crystal Structures of NaInBr 4 and NaInI 4 Single crystals of NaInBr 4 and NaInI 4 are obtained from mixtures of the binary components by slow cooling of the melts. NaInBr 4 belongs to the NaAlCl 4 type of structure: Ortho‐rhombic, P2 1 2 1 2 1 , Z = 4, a = 1108.1(1), b = 1050.7(1), c = 676.1(1) pm. NaInI 4 is isotypic with LiAlCl 4 : Monoclmic, P2 1 /c, Z = 4, a = 852.1(2), b = 766.1(2), c = 1558.3(3) pm, β = 92.65(2)°. Almost tetrahedral polyhedra [InX 4 ] – (X = Br, I) are characteristic for both structures. The coordination number of Na + is C.N. = 6 (NaInI 4 ; slightly distorted octahedron) and C.N. = 6+1+1 (NaInBr 4 ; distorted bicapped trigonal prism), respectively.
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