7787-62-4Relevant articles and documents
Metallocen-Chemie hochfluorierter Ligand-Systeme XII. Synthese und Charakterisierung von Cp2Ti(BiF6)2
Gowik, Petra,Klapoetke, Thomas
, p. C27 - C30 (1990)
The preparation of the first fluorine-coordinated metallocene hexafluorobismuthate complex is reported.Cp2Ti(BiF6)2 (1) was prepared from the reaction of Cp2TiF2 with BiF5 in SO2ClF in the presence of anhydrous HF, followed by recrystallization of 1 from
Preparation and characterization of Ni(BiF6)2 and of the ternary adducts [Ni(CH3CN)6](BiF6)2 and [Ni(CH3CN)6](SbF6)2. Crystal structure of [Ni(CD3CN)6](SbF6)2
Bougon, Roland,Charpin, Pierrette,Christe, Karl O.,Isabey, Jacques,Lance, Monique,Nierlich, Martine,Vigner, Julien,Wilson, William W.
, p. 1389 - 1393 (2008/10/08)
Ni(BiF6)2 was prepared from the reaction of NiF2 with BiF5 in anhydrous HF, followed by removal of the excess of BiF5 by sublimation. The compound was characterized by elemental analysis, X-ray powder data, and vibrational spectroscopy. Both Ni(BiF6)2 and Ni(SbF6)2 react with acetonitrile to give ternary adducts of the formula NiF2·2MF5·6CH3CN, with M = Bi or Sb. These isomorphous adducts are stable at room temperature and were characterized by elemental analyses, X-ray powder data, and infrared and electronic spectroscopy. In these ternary adducts the Ni2+ ion is octahedrally coordinated by six acetonitrile molecules via the nitrogen, and the counterions are MF6-. The [Ni(CD3CN)6](SbF6)2 complex was characterized by X-ray diffraction methods, crystallizing in the trigonal space group R3 with a = 11.346 (3) A?, c = 17.366 (6) A?, V = 1936 A?3, Z = 3, and R = 0.034. The Sb atoms lie on C3 sites and are octahedrally coordinated by six F atoms with two nonequivalent Sb-F distances of 1..80 (1) and 1.83 (1) A?. The octahedrally coordinated Ni atoms lie on C3i sites with Ni-N distances of 2.07 (1) A?. It is shown that coordination of the Ni2+ ions by six CH3CN molecules lessens the strong polarizing effect of these ions on the MF6- counterions, which had been found for the Ni(MF6)2 salts, and reduces their distortion from octahedral symmetry.
INTERACTION BETWEEN URANIUM TETRAFLUORIDE OXIDE AND THE PENTAFLUORIDES OF ARSENIC, NIOBIUM, TANTALUM, AND BISMUTH
Holloway, John H.,Laycock, David,Bougon, Roland
, p. 2303 - 2306 (2007/10/02)
No reaction occurs between UF4O and AsF5 but UF4O*3MF5 (M=Nb and Ta) and UF4O*2BiF5 have been obtained as yellow or orange solids by warming mixtures of UF4O with excess of the appropriate pentafluoride in anhydrous HF or by combination of the oxide tetrafluoride with excess of the pentafluoride as a melt.The solid adducts have been charcterized by their reaction stoicheiometries, chemical analyses, and vibrational spectra.Like UF4O*2SbF5, the adducts are fluorine bridged with some ionic character.The thermal decomposition of the adducts results in the production of uranyl species.
