CHIRAL DERIVATIVES OF EXO-METALLOFULLERENES - SYNTHESIS AND X-RAY STUDY OF SOLVATE OF PLATINUMFULLERENE CLUSTER WITH CYCLOOCTENE, ETA(2)-C60PT[(-DIOP]CENTER-DOT-C8H14())

A novel optically active exo-metallofullerene derivative, eta(2)-C60Pt [(+)-DIOP] (1) (DIOP is e-2,3-dihydroxy-1,4-bis(diphenylphosphinobutan e)), is formed as a result of the cleavage of the chelate metallocycle in Pt[(+)-DIOP](2) and the substitution of the bidentate (+)-DIOP lig and with C-60. Cluster 1 was also obtained by replacement of the phosp hine ligands in eta(2)-C60Pt(PPh(3))(2) by (+)-DIOP. Compound 1 was id entified by its electronic absorption spectra, P-31 NMR spectra, and t he elemental analysis data. A single-crystal X-ray study of the 1 cycl ooctene solvate, eta(2)-C-60,Pt[(+)-DIOP]. C8H14 was performed. Packin g of the fullerene cores in a crystal of 1 . C8H14 corresponds to the diamond structure subjected to the significant orthorhombic distortion s.