Azidoaurates of the alkali metals

被引：19

作者：

Afyon, Semih

Hoehn, Peter

Armbruester, Marc

Baranov, Alexey

Wagner, Frank R.

Somer, Mehmet

Kniep, Ruediger

机构：

[1] Max Planck Inst Chem Phys Fester Stoffe, D-01187 Dresden, Germany

[2] Koc Univ, Sariyer, Turkey

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2006年 / 632卷 / 10-11期

关键词：

azides; crystal structure; vibrational spectroscopy; ELF;

D O I：

10.1002/zaac.200600062

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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 orangered compounds were prepared by reaction of the respective binary azides with HAuCl4 in aqueous solutions at room temperature. The crystal structures determined by single crystal X-ray diffraction methods are monoclinic (C2/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, beta = 91.220(5)degrees / 90.322(5)degrees / 92.72(5)degrees) 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.

引用

页码：1671 / 1680

页数：10

共 35 条

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