![Thorium heptaphosphide Thorium heptaphosphide](/modules/owlapps_apps/img/nopic.jpg)
Thorium heptaphosphide is a binary inorganic compound of thorium metal and phosphorus with the chemical formula ThP7. This is the most phosphorus-rich binary compound of a tetravalent thorium.
Thorium heptaphosphide can be synthesized from the elements with addition of iodine at 830 K.
Thorium heptaphosphide forms black rod-shaped crystals of orthorhombic crystal system. It decomposes to Th2P11 at 650 K in vacuo.
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