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X‐Ray Diffraction Studies on Molecular Semiconductors Based on Charge‐Transfer Complexes of Substituted Phenothiazines with 2,3‐Dichloro‐5,6‐dicyano‐p‐benzoquinone

1991; Wiley; Volume: 26; Issue: 2 Linguagem: Inglês

10.1002/crat.2170260213

1521-4079

Ram Singh, Ranjana Singh, S. M. Verma,

Crystallography and molecular interactions

Abstract X‐ray powder diffraction data on the molecular semiconductors based on the 1:1 charge‐transfer complexes of the electron donors, viz. phenothiazine (PTZ), 2‐chlorophenothiazine (CPZ), 2‐acetyl phenothiazine (APZ) and 2‐(trifluoromethyl)‐phenothiazine (TPZ) with 2,3‐dichloro‐5,6‐dicyano‐p‐benzoquinone (DDQ) have been reported in this paper. The indexing has been done by Ito's method. All the complexes have been found to have orthorhombic crystal structures. The lattice parameters for the individual complexes are as follows: (i) PTZ‐DDQ: a = 6.020 Å, b = 9.775 Å, c = 24.280 Å; (ii) CPZ‐DDQ: a = 5.830 Å, b = 8.070 Å, c = 20.280 Å; (iii) APZ‐DDQ: a = 5.055 Å, b = 7.955 Å, c = 19.520 Å; (iv) TPZ‐DDQ: a = 5.130 Å, b = 8.195 Å, c = 19.850 Å.