Affiliation:
1. Abteilung II für Anorganische Chemie im Eduard-Zintl-Institut der Technischen Hochschule Darmstadt, Hochschulstraße 4, D-6100 Darmstadt
Abstract
The new compound Ca3AlAs3 crystallizes in the orthorhombic system (space group: Pnma) with
a = 1221.2(3) pm, b = 420.1(2) pm, c = 1343.4(4) pm.
In the structure there are AlAs4-tetrahedra connected by common corners to „Einereinfach" chains.
The new compound Ba3AlSb3 crystallizes in the orthorhombic system (space group: Cmca) with
a = 2113.3(10) pm, b = 719.4(5) pm, c = 1400.9(8) pm.
AlSb4-tetrahedra are connected by common edges to isolated Al2Sb6 groups. According to the compositions and structures both compounds belong to the Zintl-phases.
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