SYNTHESIS AND CHARACTERIZATION OF THE FUL LERENE CO-CRYSTAL C-60-ASTERISK-SIH(C6H5)(3)

A new fullerene co-crystal C-60SiH(C6H5)(3) has been synthesized by c rystallisation from a melt of SiH(C6H5)(3) and C-60 in sealed duran tu bes at 80 degrees C. X-ray investigations led to triclinic symmetry, s pace group P (1) over bar, a = 10.086(1), b = 14.431(2), c = 14.911(2) Angstrom, alpha = 79.13(1), beta = 74.943(9), gamma = 88.33(1)degrees , V = 2058.0(4) Angstrom(3), Z = 2. The crystal structure consists of isolated fullerene and silane molecules. At -80 degrees C, C-60 is sti ll rotationally disordered. Temperature dependent Guinier powder diagr ams do not show any phase transformation between 25 and -165 degrees C . The compound is stable in air.