The structures of [NMe4][RF2J and fNMe4][H2F3J have been determined by X-ray diffraction. The table below shows selected structural data; all F-H-F angles are between 175 and 178°.
Parameter | [NMe4J[HF2] | [NMe41[H2F.,] |
F-H distances | 112.9/112.9 pm | 89/143 pm |
F—F—F angles | - | 125.9° |
From the data given, draw the structures of the anions in [NMe4][HF2] and [NMe4][H2F3l, and say what you can about the bonding in these species.
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