Synthesis and Characterization of [XeOXe](2+) in the Adduct-Cation Salt, [CH3 CN- - -XeOXe- - -NCCH3 ][AsF6 ]2.

Autor: De Backere JR; Department of Chemistry, McMaster University, Hamilton, ON, L8S 4M1, Canada., Bortolus MR; Department of Chemistry, McMaster University, Hamilton, ON, L8S 4M1, Canada., Schrobilgen GJ; Department of Chemistry, McMaster University, Hamilton, ON, L8S 4M1, Canada. schrobil@mcmaster.ca.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2016 Sep 19; Vol. 55 (39), pp. 11917-20. Date of Electronic Publication: 2016 Aug 25.
DOI: 10.1002/anie.201606851
Abstrakt: Acetonitrile and [FXeOXe- - -FXeF][AsF6 ] react at -60 °C in anhydrous HF (aHF) to form the CH3 CN adduct of the previously unknown [XeOXe](2+) cation. The low-temperature X-ray structure of [CH3 CN- - -XeOXe- - -NCCH3 ][AsF6 ]2 exhibits a well-isolated adduct-cation that has among the shortest Xe-N distances obtained for an sp-hybridized nitrogen base adducted to xenon. The Raman spectrum was fully assigned by comparison with the calculated vibrational frequencies and with the aid of (18) O-enrichment studies. Natural bond orbital (NBO), atoms in molecules (AIM), electron localization function (ELF), and molecular electrostatic potential surface (MEPS) analyses show that the Xe-O bonds are semi-ionic whereas the Xe-N bonds may be described as strong electrostatic (σ-hole) interactions.
(© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)
Databáze: MEDLINE
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