Caesium phosphide
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| Name = Caesium phosphide
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| CASNo = 86096-81-3
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| SMILES = [Cs+].[Cs+].[Cs+].[P-]1P2P3[P-]P1[P-]P23
| SMILES_Comment = Cs3P7
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| Section2 = {{Chembox Properties
| Cs=3 | P=7
| Appearance = yellow crystals
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Caesium phosphide refers to any of several inorganic compounds with the formula CsPx. The most studied member is Cs3P7,{{cite journal |doi=10.1002/zaac.19875520907 |title=Zur Chemie und Strukturchemie von Phosphiden und Polyphosphiden. 44. Tricäsiumheptaphosphid Cs3P7: Darstellung, Struktur und Eigenschaften |date=1987 |last1=Meyer |first1=Teodoro |last2=Hönle |first2=Wolfgang |last3=von Schnering |first3=Hans Georg |journal=Zeitschrift für Anorganische und Allgemeine Chemie |volume=552 |issue=9 |pages=69–80 }} which forms yellow crystals of tetragonal structure (P41 group),{{cite book |last1=Tilley |first1=Richard J. D. |title=Crystals and Crystal Structures |date=14 August 2006 |publisher=John Wiley & Sons |isbn=978-0-470-02953-4 |page=101 |url=https://books.google.com/books?id=ilVvOYOFCx8C&dq=caesium+phosphide&pg=PA250 |access-date=3 March 2024 |language=en}} which turn brown when heated to 300 °C, and colorless when cooled with liquid nitrogen.
Other cesium phosphides
CsP15 is also claimed.{{cite journal |doi=10.1016/0040-6031(87)88120-0 |title=Chemistry and structural chemistry of phosphides and polyphosphides. 45. The thermal decomposition and thermodynamic properties of the alkali metal pho |date=1987 |last1=Santandrea |first1=Robert P. |last2=Mensing |first2=Christian |last3=von Schnering |first3=Hans Georg |journal=Thermochimica Acta |volume=117 |pages=261–270 }} Cs4P6 is a layered compound consisting of planar P64- rings.{{cite journal |doi=10.1002/zaac.19875531031 |title=Zur Chemie und Strukturchemie von Phosphiden und Polyphosphiden. 46. Tetrarubidiumhexaphosphid und Tetracäsiumhexaphosphid: Darstellung, Struktur und Eigenschaften von Rb4P6 und Cs4P6 |date=1987 |last1=von Schnering |first1=H. G. |last2=Hönle |first2=W. |last3=Bauhofer |first3=W. |last4=Kliche |first4=G. |last5=Meyer |first5=T. |last6=Schmettow |first6=W. |last7=Hinze |first7=U. |journal=Zeitschrift für Anorganische und Allgemeine Chemie |volume=553 |issue=10 |pages=261–279 }}
References
{{Reflist}}
{{Phosphorus compounds}}
{{Caesium compounds}}
{{Phosphides}}