2,8-Dimethyl-10-p-tolyl-10H-phenoxaphosphine

Abstract

The title compound (systematic name: 3,6-dimethyl-10-p-tolyl-9-oxa-10- phosphaanthracene), C21H19OP, is a precursor for the preparation of a bidentate xanthene-based ligand, in which the dihedral angle between the toluene ring and the phenoxaphosphine ring system is 83.26 (3)°. The geometry at the P atom is pyramidal, resulting in a longer C - P bond length as compared to the two ring C - P bonds. © 2009.