Caesium oxalate

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Not to be confused with cerium oxalate.
Caesium oxalate
Names
Preferred IUPAC name
Dicaesium oxalate
Identifiers
  • 1068-63-9
3D model (JSmol)
ChemSpider
EC Number
  • 213-950-8
  • InChI=1S/C2H2O4.2Cs/c3-1(4)2(5)6;;/h(H,3,4)(H,5,6);;/q;2*+1/p-2
    Key: HEQUOWMMDQTGCX-UHFFFAOYSA-L
  • C(=O)(C(=O)[O-])[O-].[Cs+].[Cs+]
Properties
C2Cs2O4
Molar mass 353.829 g·mol−1
Hazards
GHS labelling:
GHS07: Exclamation mark
Signal word
 Warning
H302, H312
P264, P270, P280, P301+P312, P302+P352, P312, P322, P330, P363, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Caesium oxalate (standard IUPAC spelling) dicesium oxalate, or cesium oxalate (American spelling) is the oxalate of caesium. Caesium oxalate has the chemical formula of Cs2C2O4.

Preparation[]

Caesium oxalate can be prepared by passing carbon monoxide and carbon dioxide over caesium carbonate at 380 °C:[1]

Cs2CO3 + CO + CO2 → Cs2C2O4 + CO2

Other alkali carbonates do not undergo transformation to oxalate.[1]

Caesium carbonate can react with oxalic acid in aqueous solution to give caesium oxalate.[2]

Cs2CO3 + H2C2O4•2H2O → Cs2C2O4•H2O + CO2 + H2O

Chemical Reactions[]

Caesium oxalate can be reduced back into caesium carbonate and carbon dioxide by thermal decomposition.

Cs2C2O4 → Cs2CO3 + CO

Double salts[]

Compounds that contain caesium and another element in addition to the oxalate anion are double salts. The oxalate may form a complex with a metal that can make a salt with caesium.

Examples include:

name formula properties reference
caesium-bis(oxalato)oxo-titanate(IV) hydrate (Cs4[TiO(C2O4)2]2•3H2O) [3]
caesium oxalatooxovanadate(IV) Cs2[VO(C2O4)2] [4]
caesium tris(oxalato) ferrate(III) dihydrate (Cs3Fe(ox)3•2H2O) [5]
Cs2Co(C2O4)2·4H2O [6]
caesium bis(oxalato)nickelate tetrahydrate Cs(Ni(C2O4)2)•4H2O [7]
caesium tris(oxalato)germanate(IV) (Cs2[Ge(C2O4)3]) [8]
caesium yttrium oxalate monohydrate Y(H2O)Cs(C2O4)2 monoclinic a = 8.979, b = 6.2299, c = 8.103 Å, β = 90.05° V = 453.3 Å3, space group P2/n [9]
caesium oxy bis(oxalato)niobate(V) dihydrate Cs[NbO(C2O4)2(H2O)2]•2H2O [10]
Cs2(NH4)2[Mo3O8(C2O4)3] [11]
Cs4La2(C2O4)5•8H2O [12]
Cs4Pr2(C2O4)5•8H2O [12]
CsNd(C2O4)2•6H2O [12]
CsSm(C2O4)2•6H2O [12]
CsDy(C2O4)2•?H2O [12]
CsGd(C2O4)2•1.5H2O [12]
CsTb(C2O4)2•1.5H2O [12]
CsDy(C2O4)2•1.5H2O [12]
CsHo(C2O4)2•?1.5H2O [12]
CsYb(C2O4)2•1.5H2O [12]
CsLu(C2O4)2•1.5H2O [12]
caesium oxalatotungstate Cs2WO2(C2O4)2 [13]
caesium oxalatofluorotungstate Cs2WO2F2(C2O4) [13]
Cs3[Re(C2O4)3] [14]
Cs2UO2(C2O4)(SO4)(H2O)2) [15]
Cs(NH4)(UO2(C2O4)(SO4)•2H2O [15]
caesium neptunium oxalate (CsNpO2C2O4•nH2O) [16]

Mixed anion compounds containing caesium, oxalate and another anion also exist, such as the uranyl sulfate above, and caesium bis(oxalaoto)borate (CsBOB) (CsC4O8B).[17]

References[]

  1. ^ a b Kudo, Kiyoshi; Ikoma, Futoshi; Mori, Sadayuki; Komatsu, Koichi; Sugita, Nobuyuki (1997). "Synthesis of oxalate from carbon monoxide and carbon dioxide in the presence of caesium carbonate". Journal of the Chemical Society, Perkin Transactions 2 (4): 679–682. doi:10.1039/A607856G.
  2. ^ Dinnebier, Robert E.; Vensky, Sascha; Panthöfer, Martin; Jansen, Martin (2003-03-01). "Crystal and Molecular Structures of Alkali Oxalates: First Proof of a Staggered Oxalate Anion in the Solid State". Inorganic Chemistry. 42 (5): 1499–1507. doi:10.1021/ic0205536. ISSN 0020-1669. PMID 12611516.
  3. ^ Fester, A.; Bensch, W.; Trömel, M. (March 1992). "Crystal structure of cesium-bis(oxalato)oxo-titanate(IV) hydrate". Inorganica Chimica Acta. 193 (1): 99–103. doi:10.1016/S0020-1693(00)83801-3.
  4. ^ Bhaumik, B. B.; Chattopadhyay, R. K. (April 1981). "Oxalatooxovanadates (IV)" (PDF). Indian J. Chem. 20A: 417–419.
  5. ^ Randhawa, B. S. (September 1995). "Mössbauer study on thermal decomposition of cesium tris(oxalato) ferrate(III) dihydrate". Journal of Radioanalytical and Nuclear Chemistry. 201 (1): 57–63. doi:10.1007/bf02204772. S2CID 97013742.
  6. ^ Schwendtner, Karolina; Kolitsch, Uwe (2004-05-15). "Cs 2 Co II (C 2 O 4 ) 2 ·4H 2 O". Acta Crystallographica Section E. 60 (5): m659–m661. doi:10.1107/S1600536804009626. ISSN 1600-5368.
  7. ^ Modebadze, M. E. (1987). "Study of oxalate compounds of nickel". Investigations in Chemistry of Complexes and Compounds of Certain Transition and Rare Metals. No. 4 (in Russian).
  8. ^ Lopez, Jordan R.; Akutsu, Hiroki; Martin, Lee (November 2015). "Radical-cation salt with novel BEDT-TTF packing motif containing tris(oxalato)germanate(IV)" (PDF). Synthetic Metals. 209: 188–191. doi:10.1016/j.synthmet.2015.07.019.
  9. ^ Bataille, Thierry; Auffrédic, Jean-Paul; Louër, Daniel (2000). "Crystal structure and thermal behaviour of the new layered oxalate Y(H2O)Cs(C2O4)2 studied by powder X-ray diffraction". Journal of Materials Chemistry. 10 (7): 1707–1711. doi:10.1039/b001201g.
  10. ^ Brničević, N.; Djordjević, C. (February 1976). "Co-ordination complexes of niobium and tantalum XVI. salts of oxy-bis-oxalato niobate (V)". Journal of the Less Common Metals. 45 (1): 45–52. doi:10.1016/0022-5088(76)90195-8.
  11. ^ Goel, S. P.; Verma, G. R.; Kumar, Sanjive; Sharma, M. P. (February 1991). "Preparation of cesium trimolybdate by the thermal decomposition of a new oxomolybdenum(VI) oxalato complex". Journal of Thermal Analysis. 37 (2): 427–432. doi:10.1007/BF02055943. ISSN 0368-4466. S2CID 94623703.
  12. ^ a b c d e f g h i j k Genčova, O.; Šiftar, J. (May 1995). "Synthesis and thermal characteristics of caesium oxalato-metallates of some rare earths". Journal of Thermal Analysis. 44 (5): 1171–1176. doi:10.1007/BF02547547. ISSN 0368-4466. S2CID 94768537.
  13. ^ a b Sengupta, A. K.; Bhaumik, B. B.; Nath, S. K. (June 1983). "Oxalatofluorotungstates (VI) & Oxalatotungstates (VI) of Some Alkali Metals & Complex Cations" (PDF). Indian Journal of Chemistry. 22A: 535–536.
  14. ^ Hadadzadeh, Hassan; Rezvani, Ali Reza; Salehi Rad, Ali Reza; Khozeymeh, Elahe (August 2008). "A Novel Method for Preparation of Alumina-Supported Rhenium-Cesium Catalyst, Re-Cs/g-Al2O3". Iranian Journal of Chemistry and Chemical Engineering. 27 (3). doi:10.30492/ijcce.2008.6965.
  15. ^ a b Chernyaev, I. I.; Golovnya, V. A.; Shchelokov, R. N. (1960-07-01). "Aquo-Oxalato-Sulfate Compounds of Uranium" [Aquo-Oxalato-Sulfate Compounds of Uranium]. Zhur. Neorg. Khim. (in Russian). 5. OSTI 4166316.
  16. ^ Charushnikova, I. A.; Krot, N. N.; Polyakova, I. N. (May 2006). "Synthesis and crystal structure of double Np(V) cesium oxalate CsNpO2C2O4 · nH2O". Radiochemistry. 48 (3): 223–226. doi:10.1134/S1066362206030039. S2CID 92883386.
  17. ^ Kazdobin, K. A.; Diamant, V. A.; Trachevskii, V. V. "MICROWAVE – ASSISTED SYNTHESIS OF BIS (OXALATO) ALKALI METAL BORATES". Cite journal requires |journal= (help)
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