Characterization of A_x[W₆I₁₄] as Key Compounds for Ligand-Substituted A₂[W₆I₈L₆] Clusters

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• 作者：Thorsten Hummel ; Markus Strö ; bele ; Dominic Schmid ; David Enseling ; Thomas J&uuml ; stel and H.-J&uuml ; rgen Meyer
• 刊名：European Journal of Inorganic Chemistry
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：2016
• 期：31
• 页码：5063-5067
• 全文大小：826K
• ISSN：1099-0682c

文摘

A_x[W₆I₁₄] compounds with A = Na, K, Rb, or Cs are prepared from W₃I₁₂ and alkali iodides (AI). Crystal structures were solved and refined for Na[W₆I₁₄] and A₂[W₆I₁₄] compounds with A = K, Rb and Cs on the basis of powder and single-crystal XRD diffraction. All compounds behave stable in air and can be dissolved in polar organic solvents making them valuable precursors for long-needed soluble octahedral [W₆I₈I₆]^2– cluster ions. Excitation and emission spectra of solid Na[W₆I₁₄] and Cs₂[W₆I₁₄] are reported as reference systems for photophysically active A₂[W₆I₈L₆] compounds (L = inorganic or organic ligand), which can be developed therefrom, as demonstrated for Na₂[W₆I₈(OCH₃)₆]·8(CH₃OH).