A new fullerene co-crystal C60*SiH(C6H5)3 has been synthesized by crystallisation from a melt of SiH(C6H5)3 and C60 in sealed duran tubes at 80°C. X-ray investigations led to triclinic symmetry, space group P i, a = 10.086(1),/? = 14.431(2), c = 14.911(2) Ä, a = 79.13(1), ß = 74.943(9), 7 = 88.33( 1)°, V = 2058.0(4) A 3, Z = 2. The crystal structure consists of isolated fullerene and silane molecules. At -80°C, C60 is still rotationally disordered. Temperature dependent Guinier powder diagrams do not show any phase transformation between 25 and -165°C. The compound is stable in air.