Crystal structure of aquohydronium hexachloroantimonate(V)

Abstract

. Can. J. Chem. 56,957(1978). Crystals of the compound, H502+SbC16-have been obtained. The structure shows a n isolated H 5 0 2 + ion with 0-0 2.52(1) A. Crystal data: orthorhombic (Imt??m) a = 6.96(1), b = 9.15(1), c = 7.91(1) A. The interest in structures of compounds containing strong hydrogen bonds (ref. 1, and references therein) has shown the importance of the aquohydronium ion, H , 0 2 + , in such systems. However, no previous structure contains this ion isolated from other water molecules or from strong hydrogen bonds to adjacent ions. Crystals of the compound, H,O,+SbCl,-, were obtained in X-ray capillaries when attempting to grow crystals of an adduct of antimony pentachloride. The structure was solved but did not correspond to any product reported in the literature (2). Recently Ortwein and Schmidt (3) have characterized the products H,02+SbC16-and H,O,+-SbC1,-. We now report our structural data on the former compound.The compound formed orthorhombic crystals with a = 6.96(1), b = 9.15(1), c = 7.91(1) A ; D, = 2.45for Z = 2; M = 371.5; space group In~n7rn.l The data crystal was grown by vacuum sublimation in a 0.3 mm quartz X-ray capillary and data were collected on a G.E. XRD-6 manual diffractometer using CuKa radiation.

On the Reaction of Phosphorous Acid with Superacids and the Crystal Structure of H5O2+SbF6- and Me4N+HPF5-

“…The lengths of the Sb−F bonds and the F−Sb−F angles show only small deviations from an ideal octahedral geometry and are in good agreement with known octahedral hexafluoroantimonate anions. − The crystal packing contains two independent H 5 O 2 + ions. Both ions have an inversion center and almost identical O···O distances (2.417(8) and 2.40(1) Å) comparable to those of known H 5 O 2 + salts. − The H 2 O ends of the H 5 O 2 + ions share one proton located in the inversion center of the ion which is approximately of symmetry C 2 h .…”

“…The first X-ray studies on diaquahydronium salts were reported by Olovsson and later studies were reported by Follner, Penneman and Ryan, Brown et al, and Matheson and Whitla . In these structures, the hydrogen atoms were not determined from difference Fourier syntheses.…”

Synthese und Kristallstruktur von N‐Formylformamidinium‐hexachloroantimonat

“…erkennen gibt. Wiihrend regular oktaedrische SbC1,-Spezies (in Abhangigkeit von Art und GroBe des zugehorigen Kations) weitgehend identische Sb-C1-Abstande von etwa 235[14] bzw.236-237 pm [15] aufweisen, finden wir Werte zwischen 235 bis maximal 239 p i . Zudem weicht ein Teil der C1 -Sb -C1-Valenzwinkel deutlich vom 90" (hzw.…”

Tieftemperaturstruktur von diaquahydrogen(1+) hexachloroantimonat, H5O2+.SbCl6−

“…W/ahlt man for das Anion das als schlechter Wasserstoffbriickenpartner bekannte Hexachloroantimonat, so sollte es zu einer Verminderung der Wechselwirkung zwischen Kation und Anion f0hren. Spektroskopische Untersuchungen (Ortwein & Schmidt, 1976) und ROntgenstrukturanalysen (Matheson & Whitla, 1978;Henke, 1980Henke, , 1985 an Hydroxoniumhexachloroantimonaten sind bereits durchgef0hrt worden. Die Stammverbindung der Hydroxoniumhexachloroantimonate, das H30+.SbC16 -, ist, wie von Ortwein & Schmidt (1976) (Bondi, 1964).…”

“…Das Anion liegt auf einem Symmetriezentrum der Raumgruppe und die zweiz/ihlige Drehachse ved~iuft durch das Brtickenwasserstoffatom des Kations. Der O-..O-Abstand im Kation betr~igt 2,400 (3) A, und ist damit signifikant kiirzer als in der von Matheson & Whitla (1978) beschriebenen Form mit 2,52 (1)A. Das Briickenproton H1 befindet sich hierbei ann/ihemd in der Mitte der Verbindungslinie zwischen den beiden Sauerstoffatomen, wie es bei einem solch kurzen O-..O-Abstand zu erwarten ist (Tuckerman et al, 1997 Matheson & Whitla (1978). Betrachtet man allerdings die in der Fouriersynthese ermittelten Wasserstoffatome, so stellt man fest, dab doch Wasserstoffbriicken ausgebildet werden.…”