7787-61-3Relevant articles and documents
FLUORIDE-CONDUCTING SOLID ELECTROLYTES IN GALVANIC CELLS.
Schoonman,Wapenaar,Oversluizen,Dirksen
, p. 709 - 713 (1979)
Concentrated fluoride-excess solid solutions based on the alkaline earth fluorides and with CeF//3 and UF//4 as dopants are suitable solid electrolytes for application in thin film galvanic cells. Galvanic cells were fabricated using Pb or Ca as the anode
Soft-chemistry synthesis and characterization of bismuth oxyfluorides and ammonium bismuth fluorides
Bervas,Yakshinskiy,Klein,Amatucci
, p. 645 - 651 (2006)
Two bismuth oxyfluorides, BiOF and BiO0.5F2, have been prepared by soft chemistry. These two compounds are of interest for application as new type of positive electrode active materials in secondary lithium battery. BiOF was obtained directly from the fluorination of Bi 2O3 by a saturated aqueous solution of NH4F. BiO0.5F2 was obtained by the hydrolysis of β-NH 4BiF4 at 70°C. The ammonium bismuth fluoride β-NH4BiF4, which is a new orthorhombic form of NH4BiF4, was obtained by reacting BiF3 in a saturated aqueous solution of NH4F. Two other ammonium bismuth fluorides, (NH4)0.5BiF3.5 and NH 4Bi3F10, were also prepared by annealing β-NH4BiF4 at a relatively low temperature under inert atmosphere. The existence of the fluorite (NH4) 0.5BiF3.5 is reported for the first time in this paper.
The structural investigation of Ba4Bi3F17
Dombrovski,Serov,Abakumov,Ardashnikova,Dolgikh,Van Tendeloo
, p. 312 - 318 (2004)
The anion-excess ordered fluorite-related phase Ba4Bi 3F17 has been synthesized by a solid state reaction of BaF2 and BiF3 at 873K. The crystal structure of Ba 4Bi3F17 has been studied using electron diffraction and X-ray powder diffraction (a=11.2300(2)A, c=20.7766(5)A, S.G. R3, RI=0.020, RP=0.036). Interstitial fluorine atoms in the Ba4Bi3F17 structure are considered to form isolated cuboctahedral 8:12:1 clusters. The structural relationship between Ba4Bi3F17 and similar rare-earth-based phases is discussed.
Unusual neutral ligand coordination to arsenic and antimony trifluoride
Levason, William,Light, Mark E.,Maheshwari, Seema,Reid, Gillian,Zhang, Wenjian
, p. 5291 - 5297 (2011/06/27)
The preparations and spectroscopic characterisation of the hydrolytically unstable As(iii) complexes, [AsF3(OPR3)2] (R = Me or Ph) and [AsF3{Me2P(O)CH2P(O)Me 2}] are described and represent the first examples of complexes of AsF3 with neutral ligands. The crystal structure of [AsF 3{Me2P(O)CH2P(O)Me2}] contains dimers with bridging diphosphine dioxide, but there are also long contacts between the dimers to neighbouring phosphine oxide groups, completing a very distorted six-coordination at arsenic and producing a weakly associated polymer structure. The reaction of AsF3 with OAsPh3 affords Ph3AsF2, and no arsine oxide complex was formed. Reaction of SbF3 with OER3 (R = Me or Ph, E = P or As), Me 2P(O)CH2P(O)Me2 and Ph2P(O)(CH 2)nP(O)Ph2 (n = 1 or 2) in MeOH produces [SbF3(OER3)2], [SbF3{Me 2P(O)CH2P(O)Me2}] and [SbF3{Ph 2P(O)(CH2)nP(O)Ph2}] respectively. The X-ray structures reveal that the complexes contain square pyramidal SbF 3O2 cores with apical F and cis disposed pnictogen oxides. However, whilst [SbF3(OER3)2] (R = Ph: E = P or As; R = Me: E = As) and [SbF3{Ph2P(O)CH 2P(O)Ph2}] are monomeric, [SbF3{Me 2P(O)CH2P(O)Me2}] is a dimer with bridging diphosphine dioxides producing a twelve-membered ring, and [SbF 3{Ph2P(O)(CH2)2P(O)Ph2}] is a chain polymer with diphosphine dioxide bridges. In the OAsR3 reactions with SbF3, R3AsF2 are also formed. Notably the Sb-O(P) bonds are shorter than As-O(P), despite the covalent radii (As 3. IR and multinuclear (1H, 19F and 31P) NMR data are reported and discussed. BiF3 does not react with pnictogen oxide ligands under similar conditions and halide exchange of bismuth chloro complexes with Me3SnF gave BiF3.
