Abstract
Improved syntheses of a series of [(L) 2Pt(η 2-nb)] ( 4)–( 8) (L = PPh 3, 1/2 dpp( o-xyl), 1/2 dppb, 1/2 dppbe, 1/2 dppn) complexes are described. Complexes 4– 8 have been characterized by 1H, 31P NMR, IR spectroscopy as well as mass spectrometry and elemental analysis. The reaction of [(dppbe)Pt(Cl 2)] with sodium borohydride and tolan was investigated by 31P NMR spectroscopy. The complex [(dppbe)Pt(η 2-tolan)] ( 11) has been isolated and characterized. The reactivity of [(dppn)Pt(η 2-nb)] with the spirocyclohexyl-1,2,4-trithiolane 12 and the sterically hindered 2,2,4,4-tetramethyl-3-thioxocyclobutanone 13 was tested. The complex [(dppn)Pt(η 2– 13)] ( 14) has been isolated and characterized by 1H, 31P NMR, IR spectroscopy as well as mass spectrometry and elemental analysis. X-ray crystal analyses have been performed on complex 8, 11 and 14.
Published Version
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