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Improved Access to Organo-Soluble Di- and Tetrafluoridochlorate(I)/(III) Salts.

ABSTRACT: A facile one-pot gram-scale synthesis of tetraalkylammonium tetrafluoridochlorate(III) [cat][ClF4 ] ([cat]=[NEt3 Me]+ , [NEt4 ]+ ) is described. An acetonitrile solution of the corresponding alkylammonium chloride salt is fluorinated with diluted fluorine at low temperatures. The reaction proceeds via the [ClF2 ]- anion which is structurally characterized for the first time. The potential application of [ClF4 ]- salts as fluorinating agents is evaluated by the reaction with diphenyl disulfide, Ph2 S2 , to pentafluorosulfanyl benzene, PhSF5 . The CN moieties in acetonitrile and [B(CN)4 ]- are transferred in CF3 groups. Exposure of carbon monoxide, CO, leads to the formation of carbonyl fluoride, COF2 , and elemental gold is dissolved under the formation of tetrafluoridoaurate [AuF4 ]- .

SUBMITTER: Prohm P

PROVIDER: S-EPMC7540313 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

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Improved Access to Organo-Soluble Di- and Tetrafluoridochlorate(I)/(III) Salts.

Pröhm P P Schmid J R JR Sonnenberg K K Voßnacker P P Steinhauer S S Schattenberg C J CJ Müller R R Kaupp M M Riedel S S

Angewandte Chemie (International ed. in English) 20200715 37

A facile one-pot gram-scale synthesis of tetraalkylammonium tetrafluoridochlorate(III) [cat][ClF4 ] ([cat]=[NEt3 Me]+ , [NEt4 ]+ ) is described. An acetonitrile solution of the corresponding alkylammonium chloride salt is fluorinated with diluted fluorine at low temperatures. The reaction proceeds via the [ClF2 ]- anion which is structurally characterized for the first time. The potential application of [ClF4 ...[more]

PMID: 32459871

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