Crystal and molecular structure of a mesogenic compound N,N′-Bis-p-(Butoxybenzylidene)-α,α′-bi-p-Toluidine has been determined by direct methods. The compound crystallizes in triclinic system with space group P1. Cell parameters area= 6.116(3),b= 7.916(3),c= 31.421 (8)Å, α = 92.39(2),β= 92.35(3),y= 96.59(2)° andz= 2. The two symmetrical fractions of the molecule are almost planar but the angle between these planes is 63.5°. The molecules are arranged in tilted layers which is precursor to the tilted smectic phase. Crystal-mesophase transition is discussed.