Synthesis and magnetic properties of orthogonally linked phenothiazine cation radical dimer and tetramer.
A 3,3'-orthogonally linked phenothiazine cation radical dimer with methyl substituents at the 2, 2', 4, and 4' positions was synthesized. The dimer was isolated as a stable product which exists in a triplet state due to a torsion angle of ca. 80 degrees between the two phenothiazine units. The tetramer was also synthesized by linking the dimers using a 1,4-phenylene spacer.
Oka
Hiroyuki
H
Department of Advanced Materials, Institute of Technology and Science, The University of Tokushima, 2-1, Minamijosanjima-cho, Tokushima 770-8506, Japan. okah@opt.tokushima-u.ac.jp