Synthesis and characterisation of the fullerene co-crystal C60*SiH(C6H5)3

A new fullerene co-crystal C-60*SiH(C6H5)(3) has been synthesized by crystallisation from a melt of SiH(C6H5)(3) and C-60 in sealed duran tubes at 80 degrees C. X-ray investigations led to triclinic symmetry, space 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 still rotationally disordered. Temperature dependent Guinier powder diagrams do not show any phase transformation between 25 and -165 degrees C. The compound is stable in air.