Azidoaurates of the Alkali Metals | Zendy

Afyon Semih | Zendy; Höhn Peter | Zendy; Armbrüster Marc | Zendy; Baranov Alexey | Zendy; Wagner Frank R. | Zendy; Somer Mehmet | Zendy; Kniep Rüdiger | Zendy

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Azidoaurates of the Alkali Metals

Author(s) -

Afyon Semih,

Höhn Peter,

Armbrüster Marc,

Baranov Alexey,

Wagner Frank R.,

Somer Mehmet,

Kniep Rüdiger

Publication year - 2006

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.200600062

Subject(s) - raman spectroscopy , monoclinic crystal system , ternary operation , alkali metal , chemistry , crystal structure , crystallography , aqueous solution , x ray crystallography , inorganic chemistry , analytical chemistry (journal) , diffraction , organic chemistry , programming language , physics , computer science , optics

Synthesis, crystal structure as well as IR‐ and Raman‐spectroscopic properties of the new ternary azidoaurates(III) A [Au(N 3 ) 4 ] ( A = K, Rb, Cs) are reported. The translucent orange‐red compounds were prepared by reaction of the respective binary azides with HAuCl 4 in aqueous solutions at room temperature. The crystal structures determined by single crystal X‐ray diffraction methods are monoclinic ( C 2/ c (No. 15), K/Rb/Cs[Au(N 3 ) 4 ]: a = 1049.30(9) pm / 1033.93(10) pm / 1011.9(8) pm, b = 1047.52(8) pm / 1064.20(11) pm / 1093.8(8) pm, c = 776.97(7) pm / 809.79(8) pm / 858.4(6) pm, β = 91.220(5)° / 90.322(5)° / 92.72(5)°) and provide the first examples for azidoaurates with mono‐atomic cations. The unusual reduction of the lattice parameter a with increasing cation size in the isotypic series is discussed in detail. IR‐ and Raman‐spectroscopic measurements show strongly covalent gold‐nitrogen contacts, a bonding situation which is further supported by quantum chemical calculations and ELF‐analyses.

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