Beschreibung:
<jats:title>Abstract</jats:title><jats:p>The solid–state structure of tris(phenylsilyl)amine (<jats:bold>1</jats:bold>) has been determined by single–crystal X–ray diffraction analysis. The compound crystallizes in the trigonal space group <jats:italic>R</jats:italic>3 with three formula units in the unit cell. The molecules, which display crystallographic <jats:italic>C</jats:italic><jats:sub>3</jats:sub> symmetry, contain almost completely planar NSi<jats:sub>3</jats:sub> units with a propeller–like arrangement of the phenyl rings attached to them. By contrast, the carbon analogue tribenzylamine is strongly pyramidal at nitrogen, which – in the absence of steric effects – clearly demonstrates the planarization effect of silicon as a substituent to nitrogen in tertiary amines.</jats:p>