I. Nitta, T. Watanabé, I. Taguchi
May 1, 1948
Citations
0
Influential Citations
3
Citations
Journal
Journal name not available for this finding
Abstract
The crystal structure of aniline hydrobromide C6H5NH2IIBr has been examined by the X-ray method. It was found on Laue and oscillation photographs several anomalous spectra of some new kinds. Disregarding these anomalous spectra, all the data could be accounted for as having the following unit cell and space group: a=6.10A., b=8.44A., c=6.91A., Z=2, space group P21221. Making use of the intensities of (h0l) and (CkO) reflections, atomic parameters were deduced by the trial and error method. The bromine and the nitrogen atoiris occupy different special positions with two fold symmetry, their y parameters being yyBr=0.05 and yN=0.15. The axis of the anilinium group N-C1……C4 lies also on that of two fold symmetry, inclination of its plane to (001) -plane being 25°. The structure obtained is given in Fig. 6. This structure is a new type and may be taken as a radical-ionic one. The relation to the structures of alkyl ammonium halogenides and some physical properties of this crystal are discussed.Anomalous spectra can be divided into two groups. The one is of the type shown in Fig. and suggests the existence of structural irregularities of a certain kind along the b-axis. The other which is shown in Fig. 9 indicates the existence of the A twinned lattice. The detailed structure and the irregularities of lattice will be given in the following papers.