Structure and electronic properties of iodine complexes with some phenothiazine derivatives

The crystal structures of N-methylbenzo[c]phenothiazine(MB[c]PT)-I 3.75 (I), dibenzo[a,j]phenothiazine(DB[a,j]PT)-I 3 (II), and (DB[a,jPT) 2-I 3 (III) were determined. Triiodide ion and iodine form infinite chain and MB[c]PT ± molecules stack along c axis in I. Iodine exists as separate triiodide ion in crystals II and III. DB[a,j]PT molecules form dimer in II and column in III. The resistivity (ω cm) and E a (eV) along growing c axis of three crystals of I, II, and III are 10−1 (0.02), 106 (0.5), and 106 (0.4), respectively.