Two salts of the 6,6-di­fluoro-6H-dibenzo[c,e][1,2]oxaborinin-6-ide anion with different cations

The crystal structures are reported of the 6,6-di­fluoro-6 H -dibenzo[ c , e ][1,2]oxaborinin-6-ide (or 9,9-di­fluoro-10-oxa-9-boraphenanthren-9-id)anion with two different cations, namely, potassium 6,6-di­fluoro-6 H -dibenzo[ c , e ][1,2]oxaborinin-6-ide featuring a polymeric structure, and bis­(tetra­phenyl­phospho­nium) bis­(6,6-di­fluoro-6 H -dibenzo[ c , e ][1,2]oxaborinin-6-ide) aceto­nitrile tris­olvate, 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. The crystal structures are reported of the 6,6-di­fluoro-6 H -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-6 H -dibenzo[ c , e ][1,2]oxaborinin-6-ide, K + ·C 12 H 8 BF 2 O − , ( II ), featuring a polymeric structure, and bis­(tetra­phenyl­phospho­nium) bis­(6,6-di­fluoro-6 H -dibenzo[ c , e ][1,2]oxaborinin-6-ide) aceto­nitrile tris­olvate, 2C 24 H 20 P + ·2C 12 H 8 BF 2 O − ·3CH 3 CN, ( 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.