Neptunium(IV) oxalate: Difference between revisions

Neptunium(IV) oxalate
Identifiers
CAS Number	50454-44-9 ;
3D model (JSmol)	Interactive image;
PubChem CID	170842;
	InChI InChI=1S/C2H2O4.Np/c3-1(4)2(5)6;/h(H,3,4)(H,5,6);/p-2/i;1+0 Key: GSPYARDPWUCORB-QMVMUTFZSA-L;
	SMILES C(=O)(C(=O)[O-])[O-].[Np];
Properties
Chemical formula	Np(C2O4)2
Molar mass	413.04
Appearance	Green crystals
Solubility in water	slightly soluble
Hazards
	GHS labelling:
Signal word	Warning
Related compounds
Related compounds	Magnesium oxalate; Strontium oxalate; Barium oxalate; Iron(II) oxalate; Iron(III) oxalate; Praseodymium oxalate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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Neptunium (IV) oxalate^[1] is an inorganic compound, a salt of neptunium and oxalic acid with the chemical formula Np(C₂O₄)₂.^[2] The compound is slightly soluble in water, forms crystalline hydrates—green crystals.^[3]^[4]

Synthesis

Oxalic acid precipitation of neptunium (IV) solutions:^[5]

{\mathsf {NpCl_{4}+2H_{2}C_{2}O_{4}\ {\xrightarrow {}}\ Np(C_{2}O_{4})_{2}\cdot 6H_{2}O\downarrow +4HCl}}

Physical properties

Neptunium(IV) oxalate forms a crystalline hydrate of the composition Np(C₂O₄)₂ • 6H₂O, green crystals.

Insoluble in acetone, slightly soluble in water.^[6]

Chemical properties

Decomposes on heating:^[7]

{\mathsf {Np(C_{2}O_{4})_{2}\ {\xrightarrow {400^{o}C}}\ NpO_{2}+2CO_{2}+2CO}}

Applications

An intermediate product in the purification of neptunium.^[8]

References

^ Alburger, D. E.; Perlman, I.; Rasmussen, J. O.; Hyde, Earl K.; Seaborg, Glenn T.; Bishop, George R.; Wilson, Richard; Devons, S.; Goldfarb, L. J. B.; Blin-Stoyle, R. J.; Grace, M. A. (6 December 2012). Kernreaktionen III / Nuclear Reactions III. Springer Science & Business Media. p. 234. ISBN 978-3-642-45878-1. Retrieved 6 August 2021.
^ Лидин, Ростислав; Молочко, Вадим; Андреева, Лариса (2 February 2019). Константы неорганических веществ. Справочник (in Russian). Litres. p. 52. ISBN 978-5-04-077039-7. Retrieved 6 August 2021.
^ Luerkens, D. W. (1 July 1983). Neptunium (IV) oxalate solubility. [22, 45, 60/sup 0/C]. Retrieved 6 August 2021.
^ Encyclopedia of physics. Springer-Verlag. 1957. p. 234. Retrieved 6 August 2021.
^ Luerkens, D. W. (1983). "Two-stage precipitation of neptunium (IV) oxalate". Du Pont de Nemours (E.I.) and Co. Retrieved 6 August 2021. {{cite journal}}: Cite journal requires |journal= (help)
^ Luerkens, D. W. (1983). "Neptunium (IV) oxalate solubility. [22, 45, 60/sup 0/C]". Savannah River Laboratory ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. Retrieved 6 August 2021. {{cite journal}}: Cite journal requires |journal= (help)
^ Kozlova, R. D.; Karelin, A. I.; Lobas, O. P.; Matyukha, V. A. (1984). "Thermal decomposition of neptunium (4) oxalate". Radiokhimiya (in Russian). 26 (3): 311–316. ISSN 0033-8311. Retrieved 6 August 2021.
^ Бекман, Игорь (2 July 2021). Неорганическая химия. Радиоактивные элементы 2-е изд., испр. и доп. Учебник для СПО (in Russian). Litres. p. 272. ISBN 978-5-04-309059-1. Retrieved 6 August 2021.

[1] Alburger, D. E.; Perlman, I.; Rasmussen, J. O.; Hyde, Earl K.; Seaborg, Glenn T.; Bishop, George R.; Wilson, Richard; Devons, S.; Goldfarb, L. J. B.; Blin-Stoyle, R. J.; Grace, M. A. (6 December 2012). Kernreaktionen III / Nuclear Reactions III. Springer Science & Business Media. p. 234. ISBN 978-3-642-45878-1. Retrieved 6 August 2021.

[2] Лидин, Ростислав; Молочко, Вадим; Андреева, Лариса (2 February 2019). Константы неорганических веществ. Справочник (in Russian). Litres. p. 52. ISBN 978-5-04-077039-7. Retrieved 6 August 2021.

[3] Luerkens, D. W. (1 July 1983). Neptunium (IV) oxalate solubility. [22, 45, 60/sup 0/C]. Retrieved 6 August 2021.

[4] Encyclopedia of physics. Springer-Verlag. 1957. p. 234. Retrieved 6 August 2021.

[5] Luerkens, D. W. (1983). "Two-stage precipitation of neptunium (IV) oxalate". Du Pont de Nemours (E.I.) and Co. Retrieved 6 August 2021. {{cite journal}}: Cite journal requires |journal= (help)

[6] Luerkens, D. W. (1983). "Neptunium (IV) oxalate solubility. [22, 45, 60/sup 0/C]". Savannah River Laboratory ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. Retrieved 6 August 2021. {{cite journal}}: Cite journal requires |journal= (help)

[7] Kozlova, R. D.; Karelin, A. I.; Lobas, O. P.; Matyukha, V. A. (1984). "Thermal decomposition of neptunium (4) oxalate". Radiokhimiya (in Russian). 26 (3): 311–316. ISSN 0033-8311. Retrieved 6 August 2021.

[8] Бекман, Игорь (2 July 2021). Неорганическая химия. Радиоактивные элементы 2-е изд., испр. и доп. Учебник для СПО (in Russian). Litres. p. 272. ISBN 978-5-04-309059-1. Retrieved 6 August 2021.

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-'''Neptunium (IV) oxalate''' is an [[inorganic compound]], a salt of [[neptunium]] and [[oxalic acid]] with the chemical formula Np(C{{sub|2}}O{{sub|4}}){{sub|2}}.<ref>{{cite book |last1=Лидин |first1=Ростислав |last2=Молочко |first2=Вадим |last3=Андреева |first3=Лариса |title=Константы неорганических веществ. Справочник |date=2 February 2019 |publisher=Litres |isbn=978-5-04-077039-7 |page=52 |url=https://books.google.ru/books?id=-cQ0DwAAQBAJ&pg=PA52&lpg=PA52&dq=%D0%9E%D0%BA%D1%81%D0%B0%D0%BB%D0%B0%D1%82+%D0%BD%D0%B5%D0%BF%D1%82%D1%83%D0%BD%D0%B8%D1%8F(IV)&source=bl&ots=F1JcpVM1ab&sig=ACfU3U1HVGlkPjebq6W_jMZ0bhf2uAjFhw&hl=en&sa=X&ved=2ahUKEwjZk_fslpzyAhUEvYsKHYiBDTQQ6AF6BAgLEAM#v=onepage&q=%D0%9E%D0%BA%D1%81%D0%B0%D0%BB%D0%B0%D1%82%20%D0%BD%D0%B5%D0%BF%D1%82%D1%83%D0%BD%D0%B8%D1%8F(IV)&f=false |access-date=6 August 2021 |language=ru}}</ref> The compound is slightly soluble in water, forms crystalline hydrates—green crystals.<ref>{{cite book |last1=Luerkens |first1=D. W. |title=Neptunium (IV) oxalate solubility. [22, 45, 60/sup 0/C] |date=1 July 1983 |url=https://digital.library.unt.edu/ark:/67531/metadc1102341/ |access-date=6 August 2021 |language=English}}</ref><ref>{{cite book |title=Encyclopedia of physics |date=1957 |publisher=Springer-Verlag |page=234 |url=https://www.google.ru/books/edition/Encyclopedia_of_physics/x8UrAAAAYAAJ?hl=en&gbpv=1&bsq=neptunium(IV)+oxalate&dq=neptunium(IV)+oxalate&printsec=frontcover |access-date=6 August 2021 |language=en}}</ref>
+'''Neptunium (IV) oxalate'''<ref>{{cite book |last1=Alburger |first1=D. E. |last2=Perlman |first2=I. |last3=Rasmussen |first3=J. O. |last4=Hyde |first4=Earl K. |last5=Seaborg |first5=Glenn T. |last6=Bishop |first6=George R. |last7=Wilson |first7=Richard |last8=Devons |first8=S. |last9=Goldfarb |first9=L. J. B. |last10=Blin-Stoyle |first10=R. J. |last11=Grace |first11=M. A. |title=Kernreaktionen III / Nuclear Reactions III |date=6 December 2012 |publisher=Springer Science & Business Media |isbn=978-3-642-45878-1 |page=234 |url=https://www.google.ru/books/edition/Kernreaktionen_III_Nuclear_Reactions_III/FqT1CAAAQBAJ?hl=en&gbpv=1&dq=Neptunium(IV)+oxalate&pg=PA234&printsec=frontcover |access-date=6 August 2021 |language=en}}</ref> is an [[inorganic compound]], a salt of [[neptunium]] and [[oxalic acid]] with the chemical formula Np(C{{sub|2}}O{{sub|4}}){{sub|2}}.<ref>{{cite book |last1=Лидин |first1=Ростислав |last2=Молочко |first2=Вадим |last3=Андреева |first3=Лариса |title=Константы неорганических веществ. Справочник |date=2 February 2019 |publisher=Litres |isbn=978-5-04-077039-7 |page=52 |url=https://books.google.ru/books?id=-cQ0DwAAQBAJ&pg=PA52&lpg=PA52&dq=%D0%9E%D0%BA%D1%81%D0%B0%D0%BB%D0%B0%D1%82+%D0%BD%D0%B5%D0%BF%D1%82%D1%83%D0%BD%D0%B8%D1%8F(IV)&source=bl&ots=F1JcpVM1ab&sig=ACfU3U1HVGlkPjebq6W_jMZ0bhf2uAjFhw&hl=en&sa=X&ved=2ahUKEwjZk_fslpzyAhUEvYsKHYiBDTQQ6AF6BAgLEAM#v=onepage&q=%D0%9E%D0%BA%D1%81%D0%B0%D0%BB%D0%B0%D1%82%20%D0%BD%D0%B5%D0%BF%D1%82%D1%83%D0%BD%D0%B8%D1%8F(IV)&f=false |access-date=6 August 2021 |language=ru}}</ref> The compound is slightly soluble in water, forms crystalline hydrates—green crystals.<ref>{{cite book |last1=Luerkens |first1=D. W. |title=Neptunium (IV) oxalate solubility. [22, 45, 60/sup 0/C] |date=1 July 1983 |url=https://digital.library.unt.edu/ark:/67531/metadc1102341/ |access-date=6 August 2021 |language=English}}</ref><ref>{{cite book |title=Encyclopedia of physics |date=1957 |publisher=Springer-Verlag |page=234 |url=https://www.google.ru/books/edition/Encyclopedia_of_physics/x8UrAAAAYAAJ?hl=en&gbpv=1&bsq=neptunium(IV)+oxalate&dq=neptunium(IV)+oxalate&printsec=frontcover |access-date=6 August 2021 |language=en}}</ref>
 ==Synthesis==