Collect. Czech. Chem. Commun.
1999, 64, 856-864
https://doi.org/10.1135/cccc19990856
Synthesis of Bis(diphenylphosphinio)octahydro-closo-decaborates L2B10H8 (L = Ph2PH) and 1-(Diphenylphosphinio)nonahydro-closo-decaborates(1-) [1-LB10H9]- (L = Ph2PH, Ph2P(OH)) by the Palladium-Catalyzed Reaction of Ph2PH with 1-Diazononahydro-closo-decaborate(1-) [1-N2B10H9]-
Daoud Naoufala,*, Bernard Bonnetota, Henri Mongeota and Bohumír Grünerb
a Laboratoire des Multimatériaux et Interfaces UMR no 5615, Université Claude Bernard, Lyon I, 43 Bd du 11 Novembre 1918, F-69622 Villeurbanne Cédex, France
b Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 250 68 Řež near Prague, Czech Republic
Abstract
(PPh3)2PdCl2 and CuI, used in low concentration as catalysts, favour the replacement of the diazo group of [1-N2B10H9]- by Ph2PH. Owing to its instability [1-(Ph2PH)B10H9]- could not be isolated in a pure form and was obtained as a mixture with [1-Ph2P(OH)B10H9]-, but pure samples of [1-Ph2P(OH)B10H9]- were easily obtainable. (PPh3)2PdCl2 also acted as a reactant, the reduction of Pd(II) to Pd(0) allowing the formation of the neutral substituted boranes 1,6-(Ph2PH)2B10H8 and 1,10-(Ph2PH)2B10H8. These two isomers were separated by chromatography. All the products were characterized by 11B and 31P NMR and mass spectrometry techniques.
Keywords: Phosphines; Boranes; Hydroborate anions; 1-Diazononahydro-closo-decaborate(1-); 1-Phosphinononahydro-closo-decaborate(1-); Palladium.
