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Two salts of the 6,6-difluoro-6H-dibenzo[c,e][1,2]oxaborinin-6-ide anion with different cations
(2020)
The crystal structures are reported of the 6,6-difluoro-6H-dibenzo[c,e][1,2]oxaborinin-6-ide (or 9,9-difluoro-10-oxa-9-boraphenanthren-9-ide) anion with two different cations, namely, potassium 6,6-difluoro-6H-dibenzo[c,e][1,2]oxaborinin-6-ide, K+·C12H8BF2O−, (II), featuring a polymeric structure, and bis(tetraphenylphosphonium) bis(6,6-difluoro-6H-dibenzo[c,e][1,2]oxaborinin-6-ide) acetonitrile trisolvate, 2C24H20P+·2C12H8BF2O−·3CH3CN, (III), which is composed of discrete cations, anions and acetonitrile solvent molecules linked by C—H...O, C—H...N and C—H...F hydrogen bonds. There are only minor differences in the geometrical parameters of the anions in these structures.