No description available.

Inaug.-diss.--Basel. / Lebenslauf.

Inaug.-diss.--Basel. / Lebenslauf.

Thesis (Ph. D.)--University of Illinois, 1905.

Thesis (Ph. D.)--University of Michigan, 1940. / Two articles, by F.F. Blicke and S.R. Safir, reprinted from the Journal of the American chemical society, v. 63, 1941. The 2d article is a Contribution from the College of pharmacy, University of Michigan.

Thesis (Ph. D.)--University of Nebraska, 1940. / Bibliography: p. 27-28.

Abstract of Thesis (Ph. D.)--University of Illinois, 1922. / Vita. Bibliography: p. 14.

Thesis (PH. D.)--University of Nebraska, 1938. / eContent provider-neutral record in process. Description based on print version record. Bibliography: p. 24.

Tetramethyldiarsine Is found to add across the double bond of fluoroölefins of the type CF₂=CFX (X = F,Cl,Br), to give addition products. Thus 1:1 adducts, i.e. (CH₃)₂As-CF₂-CFX-As(CH₃)₂, are obtained in the reactions of tetramethyldiarsine and CF₂=CFX (X = CI,Br). The reaction of tetramethyldiarsine and tetrafluoroethylene, however, gives (CH₃)₂Aa-(CF₂-CF₂)₄-As(CH₃)₂, a 1:4 adduct. Iodotrifluoroethylene and tetramethyldiarsine react to give an adduct which Is unstable in air, but this reaction yields dimethylperfluorovinylarsine, b.p. 71°. The above arsine is also prepared by the reaction of iododimethylarsine and iodotrifluoroethylene in the presence of mercury. Tetramethyldiarsine does not react with ethylene at 20°. Bromotrifluoroethylene does not give an addition product with tetrakis(trifluoromethyl) diarsine. Hexafluoro-2-butyne reacts with tetramethyldiarsine at 20° to yield a 1:1 adduct, trans-1,2-bis(dimethylarsino)-1,2-bis(trIfluoromethyl)ethylene. Tetrakis (trifluoromethyl)diarsine and arsenobenzene do not react with hexafluoro-2—butyne to give adducts. Iodotrifluoromethane reacts with arsenobenzene to produce iodophenyltrifluoromethylarsine, phenylbis(trifluoromethyl) arsine and phenyIdliodoarsine. The mechanism of this reaction has been suggested. The iodophenyltrifluoromethylarsine reacts with silver chloride to yield chlorophenyltrifluoromethylarsine. The chloroarsine and bis(trifluoromethyl)arsine react with the elimination of hydrogen chloride to form a diarsine, which Is believed to be the symmetrical 1,2-bis(phenyl)-!, 2-bis (trifluoromethyl) diarsine. This same diarsine is probably formed by the coupling of two iodophenyltrifluoromethylarsine molecules in the presence of mercury. Paranitroarsenobenzene reacts with iodotrifluoromethane with explosive violence. Trimethylarsine does not undergo exchange reaction with bromotrifluoroethylene to give dimethylperfluorovinylarsine. Hexafluoro-2-butyne does not give an addition compound with iodo- dimethylarsine. Tetrakis(trifluoromethyl)diphosphine fails to yield adduct with bromotrifluoroethylene at 120°. Hexafluoro-2-butyne also does not give adducts with tetrakis(trifluoromethyl)diphosphine, hexa-phenylditin and hexabutylditin. / Science, Faculty of / Chemistry, Department of / Graduate

Call number: LD2668 .T4 1938 B31