The title compound, C(34)H(28)Si, was prepared as an inter-nal standard for diffusion-ordered NMR spectroscopy. The four ligands are arranged tetra-hedrally around the Si atom. The two naphthalene systems are nearly perpendicular, making an angle of 86.42(4) with one another. A naphthalene system and a phenyl ring are also nearly perpendicular, making an angle of 86.18(6) with one another. In the crystal, the mol-ecules pack in columns parallel to the a axis, and exhibit arene C-H(arene) inter-actions both within and between columns.
