Zobrazeno 1 - 10
of 164
pro vyhledávání: '"Friedhelm Aubke"'
Publikováno v:
Chemistry - A European Journal. 12:8276-8283
The reaction of [Co 2 (CO) 8 ] with (CF 3 ) 3 BCO in hexane leads to the Lewis acid-base adduct [Co 2 (CO) 7 CO-B(CF 3 ) 3 ] in high yield. When the reaction is performed in anhydrous HF solution [Co(CO) 5 ][(CF 3 ) 3 BF] is isolated. The product con
Publikováno v:
Inorganic Chemistry. 44:4206-4214
As the first examples of homoleptic, sigma-bonded superelectrophilic metal carbonyl cations with tetrafluoroborate [BF(4)](-) as the counter anions three thermally stable salts of the composition [M(CO)(6)][BF(4)](2) (M = Fe, Ru, Os) have been synthe
Autor:
Robert C. Thompson, Christian Bach, Westphal U, Rudolf Wartchow, von Ahsen B, Iona H. T. Sham, B. Bley, Friedhelm Aubke, Helge Willner, Changqing Wang, Eduard Bernhardt
Publikováno v:
Inorganic Chemistry. 44:4189-4205
Homoleptic octahedral, superelectrophilic σ-bonded metal carbonyl cations of the type [M(CO)6]2+ (M = Ru, Os) are generated in the Bronsted−Lewis conjugate superacid HF/SbF5 by reductive carbonylation of M(SO3F)3 (M = Ru, Os) or OsF6. Thermally st
Autor:
Gerhard Hägele, M. Bodenbinder, Helge Willner, Christian Bach, G. Balzer, B. Bley, B. von Ahsen, Friedhelm Aubke
Publikováno v:
Magnetic Resonance in Chemistry. 43:520-527
The dynamic CO exchange of the monovalent metal carbonyl cations [Ag(13CO)]+, [Au(13CO)2]+-Au(13CO) SO3F and [Rh(12CO)4-x(13CO)x]+ (x < or = 1) in superacidic solutions was studied by variable-temperature 13C NMR methods. The exchange rates are stron
Autor:
Friedhelm Aubke, Helge Willner
Publikováno v:
Organometallics. 22:3612-3633
Homoleptic σ-bonded metal carbonyl cations (σ-carbonyls) and their derivatives have grown in recent years into a large subgroup of mononuclear metal carbonyl complexes. They are at present formed b...
Autor:
Helge Willner, Annegret Terheiden, Heinz Oberhammer, D. Christen, Michael Berkei, Maik Finze, Eduard Bernhardt, Friedhelm Aubke
Publikováno v:
Journal of the American Chemical Society. 124:15385-15398
Tris(trifluoromethyl)borane carbonyl, (CF(3))(3)BCO, is obtained in high yield by the solvolysis of K[B(CF(3))(4)] in concentrated sulfuric acid. The in situ hydrolysis of a single bonded CF(3) group is found to be a simple, unprecedented route to a
Autor:
Stefan von Ahsen, Friedhelm Aubke, Robert C. Thompson, Iona H. T. Sham, Brian O. Patrick, Helge Willner, Britta von Ahsen
Publikováno v:
Solid State Sciences. 4:1457-1463
Antimony(V) fluoride, SbF5, forms a molecular adduct with pyrazine (1,4-diazine) of the composition 1,4-C4H4N2·2SbF5. Its molecular structure is obtained by single crystal X-ray diffraction. Crystal data of pyrazine·2SbF5: orthorhombic, spacegroup
A 19F nuclear magnetic resonance study of the conjugate BrønstedLewis superacid HSO3FSbF5. Part II
Publikováno v:
Canadian Journal of Chemistry. 80:1265-1277
Solutions of SbF5 in HSO3F with xSbF5 = 0.012 to 0.405 are studied by 500 MHz 1H NMR (299 K) and 471 MHz 19F NMR (213250 K), using NMR tubes fitted with fluoropolymer lining. The initial process during dissolution is the fast solvolysis of monomeri
Publikováno v:
Journal of the American Chemical Society. 124:8371-8379
The reductive carbonylation of IrF6 in a dilute solution of SbF5 in anhydrous HF (1:6 by volume) produces surprisingly at 25 °C and 1.5 atm CO the complex salt [Ir(CO)6][SbF6]3·4HF, while [Ir(CO)6][Sb2F11]3 is obtained in liquid SbF5 under similar
Autor:
Matthias Bodenbinder, Britta von Ahsen, James Trotter, Walter Thiel, Helge Willner, Raimund Bröchler, Volker Jonas, G. Hwang, Ulrich Westphal, Friedhelm Aubke, Steven J. Rettig
Publikováno v:
Journal of the American Chemical Society. 123:588-602
The salts [M(CO)(4)][Sb(2)F(11)](2), M = Pd, Pt, are prepared by reductive carbonylation of Pd[Pd(SO(3)F)(6)], Pt(SO(3)F)(4) or PtF(6) in liquid SbF(5), or HF-SbF(5). The resulting moisture-sensitive, colorless solids are thermally stable up to 140 d