The use of Karle-Hauptman determinants in small-structure determinations. II

This paper presents the results of an investigation into the usefulness of Karle-Hauptman determinants for the solution of the phase problem in small structures. The algorithm is discussed in some detail. Results for five test structures are given. For all test structures starting sets of about 25 reflexions with an acceptable phase error of 25° or less could be obtained. Various attempts to extend these starting sets in order to solve the structures are reported. In the writing of the program compatibility with the MULTAN system has been the authors' intention.