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Relative Lewis Basicities of Six Al(OR F ) 4 − Superweak Anions and the Structures of LiAl{OCH(CF 3 ) 2 } 4 and [1‐Et‐3‐Me‐1,3‐C 3 H 3 N 2 ][Li{Al{OCH(CF 3 ) 2 } 4 } 2 ]
Author(s) -
Ivanova Svetlana M.,
Nolan Benjamin G.,
Kobayashi Yoshihiro,
Miller Susie M.,
Anderson Oren P.,
Strauss Steven H.
Publication year - 2001
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/1521-3765(20010119)7:2<503::aid-chem503>3.0.co;2-1
Subject(s) - dichloromethane , chemistry , lewis acids and bases , ion , aqueous solution , medicinal chemistry , stereochemistry , crystallography , organic chemistry , catalysis , solvent
The relative Lewis basicities of six Al(OR F ) 4 − ions, Al{OC(CH 3 )(CF 3 ) 2 } 4 − , Al{OC(CF 3 ) 3 } 4 − , Al{OCPh(CF 3 ) 2 } 4 − , Al{OC{4‐C 6 H 4 ( t Bu)}(CF 3 ) 2 } 4 − , Al{OC(Cy)(CF 3 ) 2 } 4 − , and Al{OCPh 2 (CF 3 )} 4 − , have been determined by measuring their relative coordinating abilities towards Li + in dichloromethane. The relative Li + Lewis basicities of the Al(OR F ) 4 − ions are linearly related to the aqueous p K a values of the corresponding parent HOR F fluoroalcohols. The Lewis basicity of Al{OCH(CF 3 ) 2 } 4 − could not be measured because two of these anions can coordinate to one Li + cation. The structures of LiAl{OCH(CF 3 ) 2 } 4 and [1‐Et‐3‐Me‐1,3‐C 3 H 3 N 2 ][Li{Al{OCH(CF 3 ) 2 } 4 } 2 ] were determined.