Research Article: Trimeth­yl(triphenyl­meth­oxy)silane

Date Published: February 01, 2012

Publisher: International Union of Crystallography

Author(s): Sumati Anthal, Bubun Banerjee, Goutam Brahmacharia, Rajni Kant, Vivek K. Gupta.


In the title mol­ecule, C22H24OSi, the Si—O—C angle is 139.79 (11)°, the O—C—C angles of the triphenyl­meth­oxy group are in the range 106.13 (13)–109.22 (14)° and the O—Si—C angles of the trimethyl­sil­yloxy group are in the range 103.08 (10)–113.53 (10)°. In the crystal, face-to-face π–π interactions are observed between the phenyl rings [centroid separation = 4.194 (1) Å, interplanar spacing = 3.474 Å and centroid shift = 2.35 Å]. The three phenyl groups of the triphenyl­methyl substituent are mutually nearly perpendicular, with dihedral angles in the range 80.49 (8)–81.53 (8)°. There are only weak inter­molecular van der Waals inter­actions in the crystal.

Partial Text

For general background of trimethyl­silylation of alcohols and phenols, see: Kocienski (1994 ▶); Greene & Wuts (1999 ▶).