The compounds AuMnPnn (A = Ca, Sr, Ba; Pn = As, Sb), have been synthesized by reacting the elements in stoichiometric amounts in welded Nb tubes sealed in quartz ampules at high temperature (1250 °C). Single-crystal X-ray data (130 K, tetragonal, Iijacd (142), Z = 8) were

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Several rational approaches to solid-state synthesis have been proposed and may lead to a large number of new compounds.1"3 Such a rational approach is seen in the Zintl concept,2,4,5 which has been applied to intermetallics,2,5 ternary main-group compounds,6,7 ternary transition-metal chalcogenides,8 and ternary lanthanide transition-metal pnictides.9 The Zintl concept can (1) (a) Simon, A.

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