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| CASNo = 12135-77-2 | CASNo = 12135-77-2
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| DTXSID = DTXCID201333664 | DTXSID = DTXCID201333664
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'''Ammonium pentasulfide''' is a ] with the chemical formula {{chem2|(NH4)2S5}}.<ref>{{cite book |title=Inorganic Syntheses, Volume 21 |date=22 September 2009 |publisher=] |isbn=978-0-470-13287-6 |page=15 |url=https://www.google.ru/books/edition/Inorganic_Syntheses_Volume_21/JvHIn8pqATkC?hl=en&gbpv=1&dq=ammonium+pentasulfide&pg=PA15&printsec=frontcover |access-date=14 January 2025 |language=en}}</ref> '''Ammonium pentasulfide''' is a ] with the chemical formula {{chem2|(NH4)2S5}}.<ref>{{cite book |title=Inorganic Syntheses, Volume 21 |date=22 September 2009 |publisher=] |isbn=978-0-470-13287-6 |page=15 |url=https://books.google.com/books?id=JvHIn8pqATkC&dq=ammonium+pentasulfide&pg=PA15 |access-date=14 January 2025 |language=en}}</ref>


==Synthesis== ==Synthesis==
Passing ] through a suspension of powdered sulfur in a concentrated ammonia solution:<ref>{{cite book |last1=Brauer |first1=Georg |title=Handbook of Preparative Inorganic Chemistry V1 |date=2 December 2012 |publisher=] |isbn=978-0-323-16127-5 |page=369 |url=https://www.google.ru/books/edition/Handbook_of_Preparative_Inorganic_Chemis/kaa2qeFRXmUC?hl=en&gbpv=1&dq=ammonium+pentasulfide&pg=PR14&printsec=frontcover |access-date=14 January 2025 |language=en}}</ref><ref>{{cite book |last1=Macintyre |first1=Jane E. |title=Dictionary of Inorganic Compounds |date=23 July 1992 |publisher=] |isbn=978-0-412-30120-9 |page=3802 |url=https://www.google.ru/books/edition/Dictionary_of_Inorganic_Compounds/9eJvoNCSCRMC?hl=en&gbpv=1&dq=ammonium+pentasulfide&pg=PA3802&printsec=frontcover |access-date=14 January 2025 |language=en}}</ref> Passing ] through a suspension of powdered sulfur in a concentrated ammonia solution:<ref>{{cite book |last1=Brauer |first1=Georg |title=Handbook of Preparative Inorganic Chemistry V1 |date=2 December 2012 |publisher=] |isbn=978-0-323-16127-5 |page=369 |url=https://books.google.com/books?id=kaa2qeFRXmUC&dq=ammonium+pentasulfide&pg=PR14 |access-date=14 January 2025 |language=en}}</ref><ref>{{cite book |last1=Macintyre |first1=Jane E. |title=Dictionary of Inorganic Compounds |date=23 July 1992 |publisher=] |isbn=978-0-412-30120-9 |page=3802 |url=https://books.google.com/books?id=9eJvoNCSCRMC&dq=ammonium+pentasulfide&pg=PA3802 |access-date=14 January 2025 |language=en}}</ref>
::{{chem2|2NH3 + H2S + 4S -> (NH4)2S5}} ::{{chem2|2NH3 + H2S + 4S -> (NH4)2S5}}


==Physical properties== ==Physical properties==
Ammonium sulfide forms yellow crystals, decomposing in water, of ], spatial group ''P 21/C'', cell parameters ''a'' = 0.5427 nm, ''b'' = 1.6226 nm, ''c'' = 0.9430 nm, β = 105.31°, Z = 4.<ref>{{cite journal |title=Crystal structure of diammoniumpentasulfide (NH4)2S5 |journal=] |date=1 January 1985 |volume=172 |issue=1-2 |pages=153–158 |doi=10.1524/zkri.1985.172.1-2.153 |url=https://www.degruyter.com/document/doi/10.1524/zkri.1985.172.1-2.153/html |access-date=14 January 2025 |language=en |issn=0044-2968}}</ref> Ammonium sulfide forms yellow crystals, decomposing in water, of ], space group ''P''2<sub>1</sub>/''c'', cell parameters ''a'' = 0.5427 nm, ''b'' = 1.6226 nm, ''c'' = 0.9430 nm, β = 105.31°, Z = 4.<ref>{{cite journal |title=Crystal structure of diammoniumpentasulfide (NH4)2S5 |journal=] |date=1 January 1985 |volume=172 |issue=1–2 |pages=153–158 |doi=10.1524/zkri.1985.172.1-2.153 |url=https://www.degruyter.com/document/doi/10.1524/zkri.1985.172.1-2.153/html |access-date=14 January 2025 |language=en |issn=0044-2968 |last1=von Schnering |first1=H. G. |last2=Goh |first2=N. K. |last3=Peters |first3=K. |bibcode=1985ZK....172..153V }}</ref>


The compound can be stored under the ] without air access. When dry, it decomposes quickly in the air. the compound emits sulfur intensively in water and melts in a sealed ampoule at 95 °C to form a red liquid. The compound can be stored under the ] without air access. When dry, it decomposes quickly in the air. the compound emits sulfur intensively in water and melts in a sealed ampoule at 95 °C to form a red liquid.


==Chemical properties== ==Chemical properties==
The compound decomposes when stored in air or slightly heated:<ref>{{cite book |last1=Steudel |first1=Ralf |title=Elemental Sulfur and Sulfur-Rich Compounds II |date=26 January 2004 |publisher=] |isbn=978-3-540-44951-5 |page=133 |url=https://www.google.ru/books/edition/Elemental_Sulfur_and_Sulfur_Rich_Compoun/1zptCQAAQBAJ?hl=en&gbpv=1&dq=ammonium+pentasulfide&pg=PA133&printsec=frontcover |access-date=14 January 2025 |language=en}}</ref> The compound decomposes when stored in air or slightly heated:<ref>{{cite book |last1=Steudel |first1=Ralf |title=Elemental Sulfur and Sulfur-Rich Compounds II |date=26 January 2004 |publisher=] |isbn=978-3-540-44951-5 |page=133 |url=https://books.google.com/books?id=1zptCQAAQBAJ&dq=ammonium+pentasulfide&pg=PA133 |access-date=14 January 2025 |language=en}}</ref>
::{{chem2|(NH4)2S5 -> 2NH3 + H2S + 4S}} ::{{chem2|(NH4)2S5 -> 2NH3 + H2S + 4S}}


Latest revision as of 20:26, 14 January 2025

Ammonium pentasulfide
Names
IUPAC name diazanium;pentasulfide
Other names Diammonium pentasulfide
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
EC Number
  • 235-223-4
PubChem CID
CompTox Dashboard (EPA)
InChI
  • InChI=1S/2H3N.H2S5/c;;1-3-5-4-2/h2*1H3;1-2HKey: PRPVKBZLCJDRNZ-UHFFFAOYSA-N
SMILES
  • ..SSS
Properties
Chemical formula H8N2S5
Molar mass 196.38 g·mol
Appearance Yellow powder
Density 1.6 g/cm
Solubility in water decomposes in water
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

Ammonium pentasulfide is a chemical compound with the chemical formula (NH4)2S5.

Synthesis

Passing hydrogen sulfide through a suspension of powdered sulfur in a concentrated ammonia solution:

2NH3 + H2S + 4S → (NH4)2S5

Physical properties

Ammonium sulfide forms yellow crystals, decomposing in water, of monoclinic system, space group P21/c, cell parameters a = 0.5427 nm, b = 1.6226 nm, c = 0.9430 nm, β = 105.31°, Z = 4.

The compound can be stored under the mother liquor without air access. When dry, it decomposes quickly in the air. the compound emits sulfur intensively in water and melts in a sealed ampoule at 95 °C to form a red liquid.

Chemical properties

The compound decomposes when stored in air or slightly heated:

(NH4)2S5 → 2NH3 + H2S + 4S

References

  1. Inorganic Syntheses, Volume 21. John Wiley & Sons. 22 September 2009. p. 15. ISBN 978-0-470-13287-6. Retrieved 14 January 2025.
  2. Brauer, Georg (2 December 2012). Handbook of Preparative Inorganic Chemistry V1. Elsevier. p. 369. ISBN 978-0-323-16127-5. Retrieved 14 January 2025.
  3. Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3802. ISBN 978-0-412-30120-9. Retrieved 14 January 2025.
  4. von Schnering, H. G.; Goh, N. K.; Peters, K. (1 January 1985). "Crystal structure of diammoniumpentasulfide (NH4)2S5". Zeitschrift für Kristallographie. 172 (1–2): 153–158. Bibcode:1985ZK....172..153V. doi:10.1524/zkri.1985.172.1-2.153. ISSN 0044-2968. Retrieved 14 January 2025.
  5. Steudel, Ralf (26 January 2004). Elemental Sulfur and Sulfur-Rich Compounds II. Springer. p. 133. ISBN 978-3-540-44951-5. Retrieved 14 January 2025.
Ammonium salts
Inorganic salts
monatomic anions
oxyanions
other anions
Organic salts
Categories: