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BaAuP and BaAuAs, Synthesis via Disproportionation of Gold upon Interaction with Pnictides as Bases
Author(s) -
Nuss Jürgen,
Jansen Martin
Publication year - 2009
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.200900070
Subject(s) - disproportionation , ternary operation , metal , gold compounds , crystallography , moisture , chemistry , materials science , metallurgy , organic chemistry , catalysis , combinatorial chemistry , computer science , programming language
Abstract Gold disproportinates in the presence of the Zintl phases Ba 3 P 2 or Ba 3 As 2 forming BaAuP and BaAuAs, respectively, and BaAu 2 . The air and moisture sensitive ternary compounds crystallise in the ZrBeSi type of structure, an ordered variant of AlB 2 : BaAuP ( P 6 3 / mmc ; a = 440.68(6) pm; c = 899.8(2) pm; R 1 = 0.0237; 183 independent reflections); BaAuAs ( P 6 3 / mmc ; a = 453.53(5) pm; c = 902.7(1) pm; R 1 = 0.0255; 168 independent reflections). Both compounds, which are accessible as pure phases by reacting BaP or BaAs with gold, can be classified as poor metallic conductors.