Synthesis and Resolution of the Configurationally Stable Tris(tetra-chlorobenzenediolato)phosphate(v) Ion

摘要

The octahedral geometry of pentavalent hexacoordinated phosphorus allows the formation of chiral phosphate anions by complexation with three identical, symmetrical, bidentate lig-ands. Enantiopure anions of D_3 symmetry could be used in several fieldsof chemistry that involve chiral or prostereogenic cationic species. Resolution of enantiomeric cations, determination of their enantiomeric purity, or asymmetric synthesis of cationic species are several applications. However, known optically pure or enriched phosphate(v) ions with a hexacoordinated phosphorus center cannot easily be used since they lack either configurational or chemical stability with respect to acids and oxidants. We thus decided to synthesize and resolve the enantiomers of a readily available. Configurationally stable anion with a hexacoordinated phosphorus atom.