Solution Structure and Preferred Orientation of 3,7-Dibromo-10H-phenothiazine Dissolved in Nematic Liquid Crystal

Article abstract of DOI:10.1246/bcsj.61.369

The NMR spectrum of the title compound has been measured in nematic phase ZLI1167 and analyzed to obtain the direct couplings.The direct couplings were interpreted by assuming a folded structure of the tricyclic framework.The dihedral angle of the two phenyl rings is determined to be 149+/-2.5 deg and a value 170+/-3 deg is obtained for the angle of S...N-H.The NH proton is concluded to occupy a "equatorial" position on the central ring in a boat form.The preferred orientation of the molecule in ZLI1167 is discussed by comparing the principal axes order tensor with those of the moment of inertia.