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Title of article :
First heterodifunctional ligand derived from a tetradentate phosphine: synthesis and characterization of cis,trans,cis-1,3-bis(diphenylphosphino)-2,4-bis(diphenylphosphinothioyl)cyclobutane and its complex with PdCl2
Author/Authors :
Thomas Stampfl، نويسنده , , Rainer Haid، نويسنده , , Christoph Langes، نويسنده , , Werner Oberhauser، نويسنده , , Christian Bachmann، نويسنده , , Holger Kopacka، نويسنده , , Karl-Hans Ongania، نويسنده , , Peter Brüggeller، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2000
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Abstract :
Cis,trans,cis-1,2,3,4-tetrakis(diphenylphosphino)cyclobutane (dppcb) can be selectively oxidized by S in toluene to the disulfide cis,trans,cis-1,3-bis(diphenylphosphino)-2,4-bis(diphenylphosphinothioyl)cyclobutane (dppcbS2). DppcbS2 is the first heterodifunctional ligand derived from a tetradentate phosphine obtained with good yield and high purity. It reacts with two equivalents of PdCl2 producing [Pd2Cl4(dppcbS2)] (1). Both dppcbS2 and 1 have been fully characterized by X-ray structure analyses, NMR spectroscopy (31P{1H}, 13C{1H}, 1H), FAB mass spectrometry, elemental analyses and melting points. The possible catalytic applications of the versatile heterodifunctional ligand dppcbS2 are discussed in view of the two X-ray structures of dppcbS2 and 1.
Keywords :
crystal structures , Heterodifunctional ligands , Phosphinothioyl ligands , Tetradentate phosphines , Catalytic applications , palladium complexes
Journal title :
Inorganic Chemistry Communications
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