Holmium phosphide
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| Name = Holmium phosphide
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| ImageSize = 200px
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| OtherNames = Phosphanylidyneholmium, holmium monophosphide
| Section1 = {{Chembox Identifiers
| CASNo = 12029-85-5
| PubChem = 82819
| ChemSpiderID = 38073060
| EINECS = 234-737-6
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| SMILES = P#[Ho]
| StdInChI= 1S/Ho.P
| StdInChIKey= MPCFEQUPROVEQK-UHFFFAOYSA-N
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| Section2 = {{Chembox Properties
| Ho=1|P=1
| Appearance = Dark crystals
| Density = 7.90 g/cm3{{cite web |title=mp-1001843: HoP (cubic, Pm-3m, 221) |url=https://legacy.materialsproject.org/materials/mp-1001843/ |publisher=Materials Project |access-date=25 May 2024}}
| MolarMass = 195.90
| Solubility = Insoluble
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| Section4 = {{Chembox Structure
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| Section7 = {{Chembox Hazards
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| Section9 = {{Chembox Related
| OtherAnions = Holmium nitride
Holmium arsenide
Holmium antimonide
Holmium bismuthide
| OtherCations = Dysprosium phosphide
Erbium phosphide
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Holmium phosphide is a binary inorganic compound of holmium and phosphorus with the chemical formula HoP.{{cite book |title=Toxic Substances Control Act (TSCA) Chemical Substance Inventory. Cumulative Supplement to the Initial Inventory: User Guide and Indices |date=1980 |publisher=United States Environmental Protection Agency |page=170 |url=https://books.google.com/books?id=fkkJPwbY93gC&dq=Holmium+phosphide+HoP&pg=RA3-PA170 |access-date=23 December 2021 |language=en}}{{cite journal |last1=Fischer |first1=P. |last2=Furrer |first2=A. |last3=Kaldis |first3=E. |last4=Kim |first4=D. |last5=Kjems |first5=J. K. |last6=Levy |first6=P. M. |title=Phase diagrams and magnetic excitations in holmium phosphide |url=https://journals.aps.org/prb/abstract/10.1103/PhysRevB.31.456 |journal=Physical Review B |access-date=23 December 2021 |pages=456–469 |doi=10.1103/PhysRevB.31.456 |date=1 January 1985|volume=31 |issue=1 |pmid=9935448 |bibcode=1985PhRvB..31..456F |url-access=subscription }}{{cite web |title=Holmium Phosphide |url=https://www.americanelements.com/holmium-phosphide-12029-85-5 |publisher=American Elements |access-date=23 December 2021 |language=en}} The compound forms dark crystals, is stable in air, and does not dissolve in water.
Synthesis
Heating powdered holmium and red phosphorus in an inert atmosphere or vacuum:{{cite book |last1=Sicius |first1=Hermann |title=Handbook of the Chemical Elements |date=13 November 2024 |publisher=Springer Nature |isbn=978-3-662-68921-9 |page=963 |url=https://www.google.ru/books/edition/Handbook_of_the_Chemical_Elements/TtksEQAAQBAJ?hl=en&gbpv=1&dq=Holmium+phosphide+HoP&pg=PA963&printsec=frontcover |access-date=23 December 2024 |language=en}}
::{{chem2| 4Ho + P4 -> 4HoP }}
Properties
HoP belongs to the large class of NaCl-structured rare earth monopnictides.{{cite book |last1=Furrer |first1=A. |title=Crystal Field Effects in Metals and Alloys |date=6 December 2012 |publisher=Springer Science & Business Media |isbn=978-1-4615-8801-6 |page=24 |url=https://books.google.com/books?id=IOvTBwAAQBAJ&dq=Holmium+phosphide+HoP&pg=PA24 |access-date=23 December 2021 |language=en}}
Ferromagnetic at low temperatures.{{cite book |last1=Fysikafdelingen |first1=Forsøgsanlæg Risø |title=Annual progress report |date=1983 |publisher=Risø National Laboratory |isbn=978-87-550-0960-8 |page=11 |url=https://books.google.com/books?id=vfBOAQAAMAAJ&q=Holmium+phosphide+HoP |access-date=23 December 2021 |language=en}}{{cite book |last1=Donnay |first1=Joseph Désiré Hubert |title=Crystal Data: Inorganic compounds 1967-1969 |date=1978 |publisher=National Bureau of Standards |page=71 |url=https://books.google.com/books?id=QZkhAQAAMAAJ&q=Holmium+phosphide+HoP |access-date=23 December 2021 |language=en}}
HoP actively reacts with nitric acid.{{citation needed|date=June 2022}}
Uses
The compound is a semiconductor used in high power, high frequency applications and in laser diodes.
References
{{Reflist}}
{{Phosphorus compounds}}
{{Holmium compounds}}
{{Phosphides}}