Publication: Azidoaurates of the alkali metals
Program
KU-Authors
Afyon, Semih
Somer, Mehmet Suat
KU Authors
Co-Authors
Hoehn, Peter
Armbruester, Marc
Baranov, Alexey
Wagner, Frank R.
Kniep, Ruediger
Publication Date
Language
Type
Embargo Status
Journal Title
Journal ISSN
Volume Title
Alternative Title
Abstract
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.
Source
Publisher
Wiley
Subject
Chemistry, inorganic and nuclear
Citation
Has Part
Source
Zeitschrift fur Anorganische und Allgemeine Chemie
Book Series Title
Edition
DOI
10.1002/zaac.200600062