The Preparation and Properties of Complexes of Antimony and Bismuth Trifluorides with Strong Fluoride Acceptors

1973 ◽  
Vol 51 (5) ◽  
pp. 667-673 ◽  
Author(s):  
T. Birchall ◽  
P. A. W. Dean ◽  
B. Della Valle ◽  
R. J. Gillespie
Keyword(s):  
Raman Spectrum ◽  
Sulfur Dioxide ◽  
Raman Spectra ◽  
Mössbauer Spectra ◽  
Type A ◽  
Antimony Pentafluoride ◽  
Type B ◽  
Liquid Sulfur ◽  
Mossbauer Spectra

The reactions of antimony and bismuth trifluorides with the pentafluorides of antimony and arsenic in liquid sulfur dioxide yield the adducts SbF3•SbF5 (type A), SbF3•AsF5, BiF3•3SbF5, and BiF3•AsF5; no adducts of the trifluorides with BF3 were isolated. Antimony metal reacts with excess of antimony pentafluoride and arsenic pentafluoride in liquid sulfur dioxide giving a second form of SbF3•SbF5 (type B) and the same form of SbF3•AsF5 as produced from SbF3, respectively. BiF3•3SbF5 can be formulated as Bi(SbF6)3, but its Raman spectrum indicates the presence of extensive cation–anion fluorine-bridging. Their Raman spectra suggest that BiF3•AsF5, SbF3•AsF5, and SbF3•SbF5 (type B) have similar structures, possibly containing polymeric fluorine-bridged cations, but that SbF3•SbF5 (type A) has a different structure probably like that of AsF3•SbF5. The 121Sb Mössbauer spectra of the SbF3 adducts support the assignment of similar structures to SbF3•AsF5 and SbF3•SbF5 (type B), and the suggestion that SbF3•AsF5 and both forms of SbF3•SbF5 contain antimony (III) fluoro-cations. 19F n.m.r. shows that SbF3 has appreciable solubility in SO2 solutions of SbF5 and indicates the possible formation of "fluxional" SbF2–SbnF5n+1 molecules in SbF3–SbF5 solutions.

O-Methylation of a sulfone with methyl fluoride – antimony pentafluoride – sulfur dioxide. Preparation and properties of tetrahydro-1-methoxythiophenium 1-oxide hexafluoroantimonate

1984 ◽  
Vol 62 (1) ◽  
pp. 69-73 ◽  
Author(s):  
Magdy Malak Abdel-Malik ◽  
Philip Arthur Woodworth Dean ◽  
James Frederick King
Keyword(s):  
Sulfur Dioxide ◽  
Antimony Pentafluoride ◽  
Liquid Sulfur ◽  
Methyl Fluoride ◽  
Methyl Group ◽  
Spectroscopic Evidence ◽  
Group A

Reaction of sulfolane (tetrahydrothiophene 1,1-dioxide) (1) with methyl fluoride – antimony pentafluoride in liquid sulfur dioxide gives crystalline tetrahydro-1-methoxythiophenium 1-oxide hexafluoroantimonate (2), thereby providing the first characterized example of an alkoxysulfoxonium salt. This salt (2) is also formed, but more slowly, by reaction of methyl fluoride with the crystalline 1:1 complex of sulfolane and antimony pentafluoride. Reaction of 2 with nucleophiles leads to transfer of the methyl group, a facile process even with such weak nucleophiles as nitrobenzene and phenyl N,N-dimethylsulfamate. Spectroscopic evidence has been obtained for O-methylation of other sulfones, either by reaction with MeF•SbF5•SO2, or via the sulfone•SbF5 complex and methyl fluoride, or by transmethylation with 2.

Mößbauer- und Raman-Spektren von Fe(O2PF2)3 und Fe(O2PCl2)3 / Mössbauer- and Raman-Spectra of Fe (O2PF2) 3 and Fe (O2PCl2)3

1971 ◽  
Vol 26 (8) ◽  
pp. 747-750 ◽  
Author(s):  
J. Pebler ◽  
K. Dehnicke
Keyword(s):  
Raman Spectra ◽  
Mössbauer Spectra ◽  
Mossbauer Spectra ◽  
Octahedral Environment

From Mössbauer spectra of Fe (O2PF2)3 and Fe (O2PCl2) follows a distortion of the symmetric octahedral environment of Fe (III). Whereas in Fe (O2PCl2)3 only O-Atoms are ligands of Fe (III) in Fe (O2PF2) 3 both O- and F-Atoms have ligand-functions.Simple ionic forces between Fe (III) and the Dihalogenphosphatogroups are excluded as a result of Raman spectra.

Biological and Morphological Studies on Low-Leukemia-Strain Mice with Hodgkin's-Like Neoplasia Induced by Serial Cell-Free Transmission of Leukemic Organs of SJL/J Strain Mice

1968 ◽  
Vol 26 ◽  
pp. 210-211
Author(s):  
S. Fujinaga ◽  
K. Maruyama ◽  
C.W. Williams ◽  
K. Sekhri ◽  
L. Dmochowski
Keyword(s):  
Tissue Culture ◽  
Type A ◽  
Reticulum Cell ◽  
Type B ◽  
Viral Origin ◽  
Serial Transfer ◽  
Strain Mouse ◽  
Morphological Studies ◽  
Cell Neoplasm ◽  
Free Material

Yumoto and Dmochowski (Cancer Res.27, 2098 (1967)) reported the presence of mature and immature type C leukemia virus particles in leukemic organs and tissues such as lymph nodes, spleen, thymus, liver, and kidneys of SJL/J strain mice with Hodgki's-like disease or reticulum cell neoplasm (type B). In an attempt to ascertain the possibility that this neoplasia may be of viral origin, experiments with induction and transmission of this neoplasm were carried out using cell-free extracts of leukemic organs from an SJL/J strain mouse with spontaneous disease.It has been possible to induce the disease in low-leukemia BALB/c and C3HZB strain mice and serially transfer the neoplasia by cell-free extracts of leukemic organs of these mice. Histological examination revealed the neoplasia to be of either reticulum cell-type A or type B. Serial transfer is now in its fifth passage. In addition leukemic spleen from another SJL/J strain mouse with spontaneous reticulum cell neoplasm (type A) was set up in tissue culture and is now in its 141st serial passage in vitro. Preliminary results indicate that cell-free material of 39th tissue culture passage can reproduce neoplasia in BALB/c mice.

A MODEL FOR EXPLAINING THE MÖSSBAUER SPECTRA OF FERRIMAGNETIC SPINELS WITH A HIGH DEGREE OF DIAMAGNETIC SUBSTITUTION

1979 ◽  
Vol 40 (C2) ◽  
pp. C2-669-C2-670 ◽  
Author(s):  
E. De Grave ◽  
A. Govaert ◽  
D. Chambaere ◽  
G. Robbrecht
Keyword(s):  
Mössbauer Spectra ◽  
Mossbauer Spectra ◽  
High Degree
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