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Synthesis, crystal structures, and vibrational spectra of novel azidopalladates of the alkali metals cs-2[pd(n-3)(4)] and rb-2[pd(n-3)(4)]center dot 2/3h(2)o
(Wiley-V C H Verlag Gmbh, 2010) Hoehn, Peter; N/A; Department of Chemistry; Afyon, Semih; Somer, Mehmet Suat; Master Student; Faculty Member; Department of Chemistry; Graduate School of Sciences and Engineering; College of Sciences; N/A; 178882
The transparent dark orange compounds Cs-2[Pd(N-3)(4)] and Rb-2[Pd(N-3)(4)]center dot 2/3H(2)O are synthesized by reaction of the respective binary alkali metal azides with K2PdCl4 in aqueous solutions. According to single-crystal X-ray diffraction investigations, the novel ternary azidopalladates(II) crystallize in the monoclinic space group P2(1)/c (no. 14) with a = 705.7(2) pm, b = 717.3(2) pm, c = 1125.2(5) pm, beta = 104.58(2)degrees, mP30 for Cs2[Pd(N-3)(4)] and a = 1041.4(1) pm, b 1292.9(2) pm, c = 1198.7(1) pm, beta = 91.93(1)degrees, MP102 for Rb-2[Pd(N-3)(4)]center dot 2/3H(2)O, respectively. Predominant structural features of both compounds are discrete [Pd-II(N-3)(4)](2-) anions with palladium in a planar coordination by nitrogen, but differing in point group symmetries. The vibrational spectra of the compounds are analyzed based on the idealized point group C-4h of the spectroscopically relevant unit, [Pd(N-3)(4)](2-) taking into account the site symmetry splitting due to the symmetry reduction in the solid phase.