Abstract
Applications of high-performance liquid chromatography in organometallic chemistry: ligand exchange in complexes of ylides Dimethyl- and di- tert.-butyl-phosphonium-bis-methylide complexes of gold(I) are shown to undergo ligand exchange in methylene chloride solution to form the mixed ligand compound (CH 3) 2P[CH 2AuCH 2] 2P( tert.-C 3H 9) 2. The components of the equilibrium mixture can be identified and separated by analytical and preparative high-performance liquid chromatography, respectively, as well as by high-resolution 31P nuclear magnetic resonance spectroscopy. LiChrosorb and LiChroprep Diol phases in combination with ether-methylene chloride eluents at 20°C allowed efficient separations.
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