Complexes of niobium, tantalum and tungsten pentahalides with fluorinated ditertiary arsines

1976 ◽  
Vol 29 (2) ◽  
pp. 433 ◽  
Author(s):  
DL Kepert ◽  
KR Trigwell
Keyword(s):  
Metal Complexes ◽  
Oxidation States ◽  
Metal Atoms ◽  
High Oxidation ◽  
Tungsten Hexachloride ◽  
And Tungsten

The fluorinated ditertiary arsines 1,2-bis(dimethylarsino)-3,3,4,4-tetrafluorocyclobutene, 1,2-bis(di- methylarsino)-3,3,4,4,5,5-hexafluorocyclopentene, and 1,2-bis(dimethy1arsino)-4-fluorobenzene react with niobium and tantalum pentachlorides and pentabromides, and with tungsten hexachloride, to form MX5(diarsine). These are the first metal complexes containing fluoro ligands coordinated to metal atoms in such high oxidation states.

Übergangsmetallkomplexe mit Schwefelliganden, XLVIa. Zn-, Cd-, Hg-, Sn-, Pb-, Sb-, Bi- und Ti-Komplexe mit den zwei- und vierzähnigen Thiolatliganden 'buS2'2- = 3,5-Di(t-butyl)benzol-1,2-dithiolat(2—), 'S4'2- = 1,2-Bis(2-mercaptophenylthio)ethan(2—) und 'buS4'2- = 1,2-Bis(3,5-di(t-butyl)-2-mercaptophenylthio)ethan(2–) / Transition Metal Complexes with Sulfur Ligands, XLVIa. Zn, Cd, Hg, Sn, Pb, Bi and Ti Complexes with the Bi- and Tetradentate Thiolato Ligands 'buS2'2- = 3,5-Di(t-butyl)benzene-1,2-dithiolate(2–), 'S4'2 = 1,2-Bis(2-mercaptophenylthio)ethane(2–) and 'buS4'2- = 1,2-Bis(3,5-di(t-butyl)-2-mercaptophenylthio)ethane(2 – )

1989 ◽  
Vol 44 (9) ◽  
pp. 1015-1022 ◽  
Author(s):  
Dieter Sellmann ◽  
Gerhard Freyberger ◽  
Matthias Moll
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Elemental Analysis ◽  
Redox Reactions ◽  
Oxidation States ◽  
High Oxidation ◽  
Butyl Benzene ◽  
Alkali Salts ◽  
Ti Complexes

Syntheses of neutral 'buS2'-, 'S4'- and 'buS4'- and of anionic .buS2-complexes with various main group and transition metals are described. The complexes were prepared by reacting the neutral sulfur ligands or their alkali salts with the metal halide or alkoxide. The ligands coordinate to metal ions in normal as well as high oxidation states. No redox reactions occur in the latter case. The complexes are usually soluble in organic solvents and were characterized by elemental analysis and spectroscopic means.

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