title: The crystal structure of auramine perchlorate: correlation of the results with specular reflection spectroscopy.
abstract: The x-ray analysis of auramine perchlorate has been performed in order to establish the orientation of the cationic chromophoric group in the crystal for comparison with the orientation that was proposed on the basis of specular reflection studies. The compound crystallizes with two molecules per unit cell in space group P1 and cell parameters a = 8.86 A, b = 9.69 A, c = 11.27 A, alpha = 97 degrees 40', beta = 99 degrees 34', and gamma = 106 degrees 16'. The orientation of the chromophore is in good agreement with the crystal model. Other features of the structure are the hydrogen bonding scheme of the perchlorate ion, the highly distorted chromophoric group, and the planar dimethylamine substituents.
authors.affiliation: The Naval Research Laboratory, Washington, DC 20390, USA.
authors.forename: A V
authors.initials: AV
authors.lastname: Fratini
authors.forename: I L
authors.initials: IL
authors.lastname: Karle
authors.forename: J
authors.initials: J
authors.lastname: Karle