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Does [I3]+ Act as an “[I]+” Donor to CH3CN and N2O? Structure of [H3CCN-I-NCCH3]+[AsF6]

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journal contribution
posted on 02.11.2009, 00:00 by Margaret-Jane Crawford, Michael Göbel, Konstantin Karaghiosoff, Thomas M. Klapötke, Jan M. Welch
The solid state structure of the [(CH3CN)2I]+ cation in [(CH3CN)2I][AsF6] was determined using single crystal X-ray diffraction. The highly reactive cation was prepared by reaction of [I3][AsF6] with CH3CN in liquid SO2. In the solid state, the CNI backbone consisting of seven atoms is linear and shows a dicoordinate iodine center. The ability of [I3][AsF6] to act as a source of “[I]+” to CH3CN and N2O is compared, and the computed structures of the [CH3CNI]+, [(CH3CN)2I]+, [IN2O]+ and [ION2]+ cations are discussed.