Complexes of triphenylphosphine oxide with lanthanide bromides
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Complexes of triphenylphosphine oxide with lanthanide bromides
The reaction between hydrated lanthanide bromides and triphenylphosphine oxide in 1:3 and 1:4 ratios in ethanol gave a series of complexes [LnBr2(Ph3PO)4]Br (Ln = Pr, Nd, Gd, Tb, Er, Yb, Lu) which contain ethanol and water in the lattice, regardless of the ratio of reactants used. The single crystal x-ray structures of [NdBr2(Ph3PO)4]Br, [GdBr2(Ph3PO)4]Br and [YbBr2(Ph3PO)4]Br have been determi...
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been investigated using polarography, cyclic voltammetry, coulometry, a n d product analysis. TPP proceeds by a one-electron transfer to form the anion radical which undergoes cleavage of a phenyl group. The electrochemical reduction of triphenylphosphine (TPP) and triphenylphosphine oxide (TPPO) has The reduction of everal recent papers have been concerned with the S polarography of triphenylp...
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63-65Cu and 79,81Br spectra of halogenocuprate (I) complexes containing [CuPPh3 X2]~ (X = C1, Br, I) anions with different cations were recorded in the range 77 K -300 K. The results confirm the previous trend that, for a given ligand, 63Cu NQR frequencies are in the order C l> B r> I. fe3Cu NQR frequencies in [CuPPh3 X2]_ are compared with those in neutral Cu(Ph3 )2 X(X = Cl, Br) complexes and...
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A novel PPh3O catalyzed bromophosphonium salt-mediated dibromination of α,β-unsaturated esters and β,γ-unsaturated α-ketoesters has been developed. The products were obtained with good to excellent yields and excellent diastereoselectivities. This dibromination reaction is a good complement to the field of dibromination.
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ژورنال
عنوان ژورنال: Inorganica Chimica Acta
سال: 2010
ISSN: 0020-1693
DOI: 10.1016/j.ica.2009.08.016