Thorsten Schroer

C6F5XeCl and [(C6F5Xe)2Cl][AsF6]: The First Isolated and Unambiguously Characterized Xenon(II) Chlorine Compounds

: Xenon(II) chlorine compounds can be obtained as the isolable organo derivatives C(6)F(5)XeCl and [(C(6)F(5)Xe)(2)Cl][AsF(6)] (whose cation is depicted) in 85 and 91 % yield, respectively. These compounds decompose vigorously at 36 degrees C and 100 degrees C, respectively, leading to the formation of C(6)F(5)Cl and Xe gas and of C(6)F(5)Cl, C(6)F(6), and [C(6)F(5)Xe][AsF(6)], respectively.

The race for the first generation of the pentazolate anion in solution is far from over

The previous claim for the first generation of the pentazolate anion in solution was carefully reexamined; no evidence for the formation of cyclo-(N5-) was found under the reported conditions.

C6F5XeCl und [(C6F5Xe)2Cl][AsF6]: die ersten isolierten und zweifelsfrei charakterisierten Xenon(II)-Chlor-Verbindungen

Xenon(II)-Chlor-Verbindungen lassen sich in Form der isolierbaren Organoderivate C6F5XeCl und [(C6F5Xe)2Cl][AsF6] (dessen Kation abgebildet ist) in 85 bzw. 91 % Ausbeute gezielt synthetisieren. Diese Verbindungen zersetzen sich schlagartig bei 36°C bzw. 100°C unter Bildung von C6F5Cl und Xe-Gas bzw. C6F5Cl, C6F6 und [C6F5Xe][AsF6].

Koordinationsverhalten des Pentafluorphenylxenonium Salzes [C6F5Xe]+[AsF6]- gegenüber Pyridinen unterschiedlicher Basizität / Co-ordinative Behaviour of the Pentafluorophenylxenonium Salt [C6F5Xe]+[AsF6]- to Pyridines of Different Basicity

The arylxenonium cation in the salt [C6F5Xe]+ [AsF6]- is isoelectronic to C6F5I, but coordinatively unsaturated with respect to N-bases like MeCN and pyridines. Co-ordination of strongly basic pyridines causes weakening of the Xe-C bond and C6F1 radical formation. The thermal decomposition of pyridine co-ordinated arylxenonium cations gives three groups of products: C-pentafluorophenylated pyridines, N-pentafluorophenylated pyridinium and N-protonated pyridinium salts. The co-ordination ability of the different pyridines shows a good correlation (C6F5 group) with the 19F NMR shift values of the p-F atom and the coupling constants 3J (19F-129Xe). An X-ray structure analysis was performed for the co-ordination product [C6F5Xe · 2,6-C5H3F2N ]+ [AsF6]- and for [C6F5-C5H5N]+ [(C6F5)2BF2]-, which was obtained by thermolysis of the corresponding adduct.

Improved Synthesis of CsN3Dedicated to Professor Joachim Strähle on the Occasion of his 65th Birthday

Abstract : Cesium azide can conveniently be prepared from anhydrous CsF and (CH3)3SiN3 in SO2 solvent in high purity and yield. In this reaction, the initially generated SO2F(-) anion is converted in SO2 solvent to solvated azide, (SO2)(sub n)N3(-), which is labile and releases S02 under dynamic vacuum yielding pure CsN3.

In Pursuit of the PO2+ Cation. The Reaction of KPO2F2 and SbF5 leads to an Eight‐membered Antimony‐Oxygen‐Phosphorus‐bridged Ring

Abstract : The reaction of KPO2F2 with the strong Lewis acid SbF3 was studied as a potential pathway to the unknown PO2(+) cation. The resulting product has the desired PO2SbF6 composition but consists of an eight-membered, oxygen-bridged ring that was characterized by vibrational and NMR spectroscopy, ab initio methods, and a single crystal x-ray diffraction study. The formation of the oxygen-bridged ring and its mechanism are discussed.