Heptacoordination. Synthesis and characterization of the IOF(sub 5)(super 2-) dianion, an XOF5E species

Research was conducted to examine the structure of the IOF(sub 5)(super 2-) dianion. It was prepared in the form of its cesium salt by means of heating stoichiometric amounts of CsF, I2O5 and IF5 to 162 degrees C for 14 days. Characterization was carried out using vibrational spectroscopyp. The resulting structure was comparable to the one established for the isoelectronic XeOF(sub 5-) by combined X-ray diffraction and ab initio vibrational spectroscopy study.