Reaction of KrF2 with AsF5 at temperatures between -78 and -53°C yields [KrF] [AsF6], a...

Reaction of KrF₂ with AsF₅ at temperatures between -78 and -53°C yields [KrF] [AsF₆], a compound in which KrF⁺ interacts strongly with AsF₆ ^- through a fluorine bridge, as shown. Would you predict the Kr – F bond to be shorter in KrF⁺ or in KrF₂? Provide a brief explanation. (See J. F. Lehmann, D. A. Dixon, G. J. Schrobilgen, Inorg. Chem., 2001 , 40 , 3002.)