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A Highly Hexane Soluble Lithium Salt and other Starting Materials of the Fluorinated Weakly Coordinating Anion [Al{OC(CF 3 ) 2 (CH 2 SiMe 3 )} 4 ] −
Author(s) -
Müller Lutz O.,
Krossing Ingo
Publication year - 2008
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200700579
Subject(s) - chemistry , hexane , lithium (medication) , salt (chemistry) , ion , solubility , polar , medicinal chemistry , ligand (biochemistry) , inorganic chemistry , crystallography , stereochemistry , polymer chemistry , organic chemistry , medicine , biochemistry , physics , receptor , astronomy , endocrinology
The lithium salt of the weakly coordinating alkoxyaluminate anion Li[Al(OC(CF 3 ) 2 (CH 2 SiMe 3 )) 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(CF 3 ) 2 (CH 2 SiMe 3 )] − anion that serves as hexadentate O 2 F 4 ligand and a further bridging F atom of a second anion. Compound 2 reacts with ClCPh 3 giving the [CPh 3 ] + salt which is at least stable in CD 2 Cl 2 over days at 298 K, but decomposes after storage at 333 K for several days.