Crystals of a disiloxane compound that contain bithiophene and N-7-azaindole functional groups, 1,3-bis(5,5′-N-7-azaindolyl-[2,2′]bithiophenyl-3-yl)-1,1,3,3,-tetraphenyl-disiloxane, were grown from a diethylether solution, and the crystal structure was determined. The crystal system is triclinic with a space group of P1.