Novel configurational structures of sodium tetrakis(3-heptafluorobutylryl-(+)-camphorato) Ln(III) complexes with a trapped Na+ by Na+•••FC interactions in the solid state and in solution

For newly prepared sodium tetrakis( 3-heptafluorobutylryl-( +)-camphorato) Ln( III) complexes, the X-ray crystal analysis revealed an unprecedented pseudo-achiral dodecahedron ( DD-8 ( D-2d)), whereas in CHCl3 solution, the exciton CD and F-19 NMR spectra showed a novel chiral Delta-SAPR-8 ( C-4) configuration which is stereospecifically formed by a trapped Na+ ion with Na+center dot center dot center dot FC ( fluorocarbon) interactions.