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Improved Access to Organo‐Soluble Di‐ and Tetrafluoridochlorate(I)/(III) Salts
Author(s) -
Pröhm P.,
Schmid J. R.,
Sonnenberg K.,
Voßnacker P.,
Steinhauer S.,
Schattenberg C. J.,
Müller R.,
Kaupp M.,
Riedel S.
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202006268
Subject(s) - acetonitrile , chemistry , benzene , salt (chemistry) , fluoride , inorganic chemistry , chloride , carbon monoxide , carbon disulfide , fluorine , medicinal chemistry , polymer chemistry , organic chemistry , catalysis
A facile one‐pot gram‐scale synthesis of tetraalkylammonium tetrafluoridochlorate(III) [cat][ClF 4 ] ([cat]=[NEt 3 Me] + , [NEt 4 ] + ) is described. An acetonitrile solution of the corresponding alkylammonium chloride salt is fluorinated with diluted fluorine at low temperatures. The reaction proceeds via the [ClF 2 ] − anion which is structurally characterized for the first time. The potential application of [ClF 4 ] − salts as fluorinating agents is evaluated by the reaction with diphenyl disulfide, Ph 2 S 2 , to pentafluorosulfanyl benzene, PhSF 5 . The CN moieties in acetonitrile and [B(CN) 4 ] − are transferred in CF 3 groups. Exposure of carbon monoxide, CO, leads to the formation of carbonyl fluoride, COF 2 , and elemental gold is dissolved under the formation of tetrafluoridoaurate [AuF 4 ] − .