Tetra­kis(1-naphthyl­amino)silane and its tetra­hydro­furan tris­olvate

In both title structures, C₄₀H₃₂N₄Si and C₄₀H₃₂N₄Si·3C₄H₈O, the angles around the Si atom deviate significantly from the tetra­hedral value [104.34 (7)-116.63 (7)° in the nonsolvate and 99.91 (15)-116.85 (15)° in the solvate]. The amino H atoms in the solvated structure are involved in hydrogen bonding with two of the tetra­hydro­furan solvent mol­ecules.