From P4Se3I2via P3Se4I to P2Se5
Abstract
Abstract The reaction of phosphorus with selenium in the molten state yields a glass from which the new molecule P2Se5 can be extracted with CS2. By using 31P- and 77Se-nmr techniques it was shown, that the molecule is not a P4O10 homologue. It has a norbornane-like structure, which is also realized in the related compounds P3Se4I and P4Se3I2. By using the same technique the new compounds P3Se4-nSnI (n=1 and 2) could be synthesized. 31P- and 77Se-nmr spectra show, that Se could only be replaced by S in the monochalcogenide bridge positions.
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