Neubestimmung der Laktonringkonformation in der Kristallstruktur des Strophanthidin C23H32O6 · 1/2 H2O

A New Determination of the Conformation of the Lactonering in the Crystal Structure of Strophanthidin C₂₃H₃₂O₆ · 1/2 H₂O By partial difference-Fourier-synthesis a fixed conformation of the lactone ring of the molecule B was established and geometrical parameters were determined. The reason for the occurrence of two symmetrical independent molecules was interpreted by insertion of one water molecule in the crystal structure and by different conformations of both lactone rings. Another H-bridges-system in the crystal structure was deduced.