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Caesium phosphide refers to any of several inorganic compounds with the formula CsPx. The most studied member is Cs3P7, which forms yellow crystals of tetragonal structure (P41 group), which turn brown when heated to 300 °C, and colorless when cooled with liquid nitrogen.
Structure of the P7 subunit as found in Cs3P7.
Other cesium phosphides
CsP15 is also claimed. Cs4P6 is a layered compound consisting of planar P6 rings.
References
Meyer, Teodoro; Hönle, Wolfgang; von Schnering, Hans Georg (1987). "Zur Chemie und Strukturchemie von Phosphiden und Polyphosphiden. 44. Tricäsiumheptaphosphid Cs3P7: Darstellung, Struktur und Eigenschaften". Zeitschrift für Anorganische und Allgemeine Chemie. 552 (9): 69–80. doi:10.1002/zaac.19875520907.
Santandrea, Robert P.; Mensing, Christian; von Schnering, Hans Georg (1987). "Chemistry and structural chemistry of phosphides and polyphosphides. 45. The thermal decomposition and thermodynamic properties of the alkali metal pho". Thermochimica Acta. 117: 261–270. doi:10.1016/0040-6031(87)88120-0.
von Schnering, H. G.; Hönle, W.; Bauhofer, W.; Kliche, G.; Meyer, T.; Schmettow, W.; Hinze, U. (1987). "Zur Chemie und Strukturchemie von Phosphiden und Polyphosphiden. 46. Tetrarubidiumhexaphosphid und Tetracäsiumhexaphosphid: Darstellung, Struktur und Eigenschaften von Rb4P6 und Cs4P6". Zeitschrift für Anorganische und Allgemeine Chemie. 553 (10): 261–279. doi:10.1002/zaac.19875531031.
