Phosphinige Säuren und ihre Anhydride

Kurscheid B. Phosphinige Säuren und ihre Anhydride. Bielefeld; 2011

Air-Stable and Catalytically Active Phosphinous Acid Transition-Metal Complexes

Kurscheid B, Lhoussaine B, Hoge B. Air-Stable and Catalytically Active Phosphinous Acid Transition-Metal Complexes. Organometallics. 2011;31(4):1329-1334

Bis(perfluoralkyl)phosphinige Säuren und Derivate sowie deren Anwendung

Hoge B, Bader J, Kurscheid B, Nikolai I, Emil A. Bis(perfluoralkyl)phosphinige Säuren und Derivate sowie deren Anwendung. 2010

Coordination Properties of Perfluoroethyl- and Perfluorophenyl-Substituted Phosphonous acids, (RP)-P-f(OH)(2)

Allefeld N, Kurscheid B, Neumann B, Stammler H-G, Ignat'ev N, Hoge B. Coordination Properties of Perfluoroethyl- and Perfluorophenyl-Substituted Phosphonous acids, (RP)-P-f(OH)(2). Chemistry - A European Journal. 2015;21(39):13666-13675.Phosphinic acids, (RP)-P-f(O)(OH)H (R-f=CF3, C2F5, C6F5), turned out to be excellent preligands for the coordination of phosphonous acids, (RP)-P-f(OH)(2). Addition of C2F5P(O)(OH)H to solid PtCl2 under different reaction conditions allows the isolation and full characterization of the mononuclear complexes [ClPt{P(C2F5)(OH)O}{P(C2F5)(OH)(2)}(2)] and [Pt{P(C2F5)(OH)O}(2){P(C2F5)(OH)(2)}] containing hydrogen-bridged [(RP)-P-f(OH)O](-) and (RP)-P-f(OH)(2) units. Further deprotonation of [Pt{P(C2F5)(OH)O}(2){P(C2F5)(OH)(2)}(2)] leads to the formation of the dianionic platinate, [Pt{P(C2F5)(OH)O}(4)](2-), revealing four intramolecular hydrogen bridges. With PdCl2 the dinuclear complex [Pd-2(-Cl)(2){[P(C2F5)(OH)O](2)H}(2)] was isolated and characterized. The Cl- free complex [Pd{P(C2F5)(OH)O}(2){P(C2F5)(OH)(2)}(2)] was also prepared and deprotonated to the dianionic palladate, [Pd{P(C2F5)(OH)O}(4)](2-). Both compounds were characterized by NMR spectroscopy, IR spectroscopy, and X-ray analyses. In addition, the C6F5 derivatives [ClPt{P(C6F5)(OH)O}{P(C6F5)(OH)(2)}(2)] and [Pd-2(-Cl)(2){[P(C6F5)(OH)O](2)H}(2)] as well as the CF3 derivative [Pd-2(-Cl)(2){[P(CF3)(OH)O](2)H}(2)] were synthesized and fully characterized. Phosphonous acid complexes are inert towards air and moisture and can be stored for several months without decomposition. The catalytic activity of the palladium complexes in the Suzuki cross-coupling reaction between 1-bromo-3-fluorobenzene and phenyl boronic acid was demonstrated