Premium
Structural Relations in the Family of Nonmetallic Filled β‐Manganese Phases: The new members AGa 6 Te 10 (A: Sn, Pb) and PbIn 6 Te 10
Author(s) -
Deiseroth HansJörg,
Müller HansDieter
Publication year - 1996
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.19966220305
Subject(s) - manganese , materials science , mineralogy , crystallography , metallurgy , chemistry
Nonmetallic filled β‐manganese phases form a new class of solids with a wide spaced (“eutactical”) partial structure of nonmetal atoms (Te, I), which is topologically equivalent to the arrangement of manganese atoms in cubic β‐Mn (a = 6.315 Å, P4 1 32, Z = 20), a manganese polymorph crystallizing in a tetrahedrally close packed structure. Different fractions of the 100 tetrahedral and 4 metaprismatic holes per unit cell of the β‐Mn like arrangement of nonmetal atoms are occupied by metal atoms or pairs of covalently bonded metal atoms, leading to the different chemical compositions M 7 Te 10 , AM 6 Te 10 , Ag 2 Ga 6 Te 10 , RbX 4 I 5 (M: Al, Ga, In; A: Ca, Pb, Sn; X: Ag, Cu;). Basic structural properties and structural relations between the members of this new family of solids are discussed. In addition we present structural data for three new members of the family of filled β‐Mn phases: SnGa 6 Te 10 (single crystal data: a = 10.203 Å, α = 89.94°, space group R32, Z = 2) PbIn 6 Te 10 (single crystal data: a = 10.619 Å, R32, Z = 2) and PbGa 6 Te 10 (powder data: a = 10.237 Å, α = 89.93°, R32, Z = 2).