A Highly Hexane Soluble Lithium Salt and other Starting Materials of the Fluorinated Weakly Coordinating Anion [Al{OC(CF3)2(CH2SiMe3)}4]− |
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Authors: | Lutz O Müller Ingo Krossing Prof Dr |
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Institution: | Freiburg/Germany, Institut für Anorganische und Analytische Chemie |
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Abstract: | The lithium salt of the weakly coordinating alkoxyaluminate anion LiAl(OC(CF3)2(CH2SiMe3))4] ( 2 ) is soluble in polar and even in non‐polar solvents. Especially the solubility in n‐hexane confirms 2 to be an excellent candidate for Li ion catalysis. Its polymeric structure consists of a seven coordinated Li+ cation, coordinating a Al(OC(CF3)2(CH2SiMe3)]? anion that serves as hexadentate O2F4 ligand and a further bridging F atom of a second anion. Compound 2 reacts with ClCPh3 giving the CPh3]+ salt which is at least stable in CD2Cl2 over days at 298 K, but decomposes after storage at 333 K for several days. |
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Keywords: | Lithium Anion weakly coordinating Lithium ion catalysis |
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