50518-68-8Relevant academic research and scientific papers
Syntheses, structures and DFT study of [W(CO)5(Ph2SbX)] X = Cl, Br, I
Breunig,Borrmann,Lork,Ra?
, p. 2593 - 2598 (2007/10/03)
The complexes [W(CO)5(Ph2SbX)], X = Cl (1), Br (2) and I (3) were prepared by reaction of [W(CO)5(tetrahydrofuran)] with Ph2SbX. The structures of 1-3 were studied by X-ray diffraction. In the crystals there are weak contacts between the oxygen atoms of the CO ligands and antimony atoms of neighbouring molecules. DFT calculations were carried out for 1 using gradient corrected functional B3LYP. The bonding between Ph2SbCl and the W(CO)5 fragment in 1 was analysed using charge decomposition analysis.
Palladium-catalyzed cross-coupling reaction of ethynylstibanes with organic halides
Kakusawa, Naoki,Yamaguchi, Kouichiro,Kurita, Jyoji
, p. 2956 - 2966 (2007/10/03)
The reaction of ethynylstibanes (1a-g) with vinyl halides or triflate in the presence of a palladium catalyst led to the formation of cross-coupling products (5a-g, 10-12) in good to moderate yield, along with homo-coupling products (6a-g). A similar reaction of ethynyldiphenylstibane (1a) with aryl iodides (13a-i) also gave cross-coupling products (14a-i), although the yields were relatively low. The yields of the cross-coupling products were highly dependent on the nature of the solvent employed, and good results were obtained when the reaction was carried out in HMPA or amines such as diethylamine and morpholine. The results imply that HMPA and amine used as solvents facilitate transmetallation of the ethynyl group on 1 to the palladium by intermolecular coordination between antimony and oxygen (for HMPA) or nitrogen (for amine).
Reduction of antimony(V) by dithiophosphinates and the crystal structure of dimeric diphenylantimony(III) dimethyldithiophosphinate
Gibbons, Martin N.,Sowerby, D. Bryan,Silvestru, Christian,Haiduc, Ionel
, p. 4573 - 4578 (2008/10/09)
Reactions between three diorganodithiophosphinates and diphenylantimony(V) bromide oxide (SbPh2OBr)2, led to antimony reduction while dithiophosphinate oxidation followed a complex path varying in detail with the nature of the organic groups on dithiophosphinate. Antimony(III) dithiophosphinates, SbPh2(S2PR2) where R = Me, Et and Ph, have been isolated and characterised and an X-ray structure determination for the methyl derivative shows weakly associated dimers in the solid state, intermediate between those in (SbPh2S2PPh2)2 and [Sb(4-MeC6H4)2S2PEt]2. Copyright
THE PREPARATION OF PHENYL SUBSTITUTED ANTIMONY(III) AND ANTIMONY(V) CHLORIDES AND BROMIDES
Nunn, Michael,Sowerby, D. Bryan,Wesolek, Denise M.
, p. C45 - C46 (2007/10/02)
In the absence of solvent, the redistribution of 2/1 and 1/2 molar mixtures of Ph3Sb and SbX3, where X = Cl or Br, is rapid giving quantitative yields of Ph2SbX and PhSbX2, respectively.
