From Wikipedia, the free encyclopedia
Caesium oxalate
Names
IUPAC name
Caesium oxalate
Preferred IUPAC name
Identifiers
ChemSpider
ECHA InfoCard
100.012.683
EC Number
UNII
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
Cs2 C2 O4
Molar mass
353.829 g·mol−1
Appearance
White solid
76 g/(100 ml) (25 °C)
[1]
Hazards
GHS labelling :
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).
Chemical compound
Caesium oxalate (standard IUPAC spelling), or dicesium oxalate , or cesium oxalate (American spelling) is a
chemical compound with the
chemical formula
Cs 2
C 2
O 4 . It is a
caesium
salt of
oxalic acid . It consists of caesium
cations Cs+ and
oxalate
anions C2 O2− 4 .
Preparation
Caesium oxalate can be prepared by passing
carbon monoxide and
carbon dioxide over
caesium carbonate at 380 °C:
[2]
Cs2 CO3 + CO → Cs2 C2 O4
Other
alkali
carbonates do not undergo transformation to oxalate.
[2]
Caesium carbonate can react with
oxalic acid in
aqueous solution to give caesium oxalate.
[3]
Cs2 CO3 + H2 C2 O4 ·2H2 O → Cs2 C2 O4 ·H2 O + CO2 + 2 H2 O
Chemical Reactions
Caesium oxalate can be
reduced back into caesium carbonate and carbon monoxide by
thermal decomposition .
Cs2 C2 O4 → Cs2 CO3 + CO
Double salts
Compounds that contain caesium and another
element in addition to the oxalate anion are
double salts of caesium and oxalate. 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)oxotitanate(IV) trihydrate
Cs4 [TiO(C2 O4 )2 2 ·3H2 O
[4]
caesium oxalatooxovanadate(IV)
Cs2 [VO(C2 O4 )2
[5]
caesium tris(oxalato) ferrate(III) dihydrate
Cs3 [Fe(C2 O4 )3 ]·2H2 O
[6]
caesium bis(oxalato) cobaltate(II) tetrahydrate
Cs2 [Co(C2 O4 )2 ]·4H2 O
[7]
caesium bis(oxalato)nickelate(III) tetrahydrate
Cs[Ni(C2 O4 )2 ]·4H2 O
[8]
caesium tris(oxalato)germanate(IV)
Cs2 [Ge(C2 O4 )3
[9]
caesium yttrium(III) oxalate monohydrate
CsY(C2 O4 )2 ·H2 O
monoclinic a = 8.979, b = 6.2299, c = 8.103 Å, β = 90.05° V = 453.3 Å3 , space group P 2/n
[10]
caesium (diaquo)bis(oxalato)oxoniobate(V) dihydrate
Cs[NbO(C2 O4 )2 (H2 O)2 ]·2H2 O
[11]
Cs2 [NH4 2 [Mo3 O8 (C2 O4 )3
[12]
tetracaesium dilanthanum(III) oxalate octahydrate
Cs4 La2 (C2 O4 )5 ·8H2 O
[13]
tetracaesium dipraseodymium(III) oxalate octahydrate
Cs4 Pr2 (C2 O4 )5 ·8H2 O
[13]
caesium neodymium(III) oxalate hexahydrate
CsNd(C2 O4 )2 ·6H2 O
[13]
caesium samarium(III) oxalate hexahydrate
CsSm(C2 O4 )2 ·6H2 O
[13]
caesium dysprosium(III) oxalate hydrate
CsDy(C2 O4 )2 ·? H2 O
[13]
caesium gadolinium(III) oxalate sesquihydrate
CsGd(C2 O4 )2 ·1.5H2 O
[13]
caesium terbium(III) oxalate sesquihydrate
CsTb(C2 O4 )2 ·1.5H2 O
[13]
caesium dysprosium(III) oxalate sesquihydrate
CsDy(C2 O4 )2 ·1.5H2 O
[13]
caesium holmium(III) oxalate sesquihydrate
CsHo(C2 O4 )2 ·1.5H2 O
[13]
caesium ytterbium(III) oxalate sesquihydrate
CsYb(C2 O4 )2 ·1.5H2 O
[13]
caesium lutetium(III) oxalate sesquihydrate
CsLu(C2 O4 )2 ·1.5H2 O
[13]
dicaesium dioxotungsten(VI) oxalate
Cs2 [WO2 ](C2 O4 )2
[14]
dicaesium dioxotungsten(VI) difluoride monooxalate
Cs2 [WO2 ]F2 (C2 O4 )
[14]
caesium tris(oxalato)rhenate(III)
Cs3 [Re(C2 O4 )3
[15]
dicaesium uranyl monooxalate monosulfate dihydrate
Cs2 [UO2 ](C2 O4 )(SO4 )·2H2 O
[16]
ammonium caesium uranyl monooxalate monosulfate dihydrate
[NH4 ]Cs[UO2 ](C2 O4 )(SO4 )·2H2 O
[16]
caesium dioxoneptunium(VI) oxalate hydrate
Cs[NpO2 ]C2 O4 ·n H2 O
[17]
Mixed anion compounds containing caesium, oxalate and another anion also exist, such as the uranyl sulfate above, and caesium bis(oxalato)borate (CsBOB) (Cs[B(C2 O4 )2 ).
[18]
References
^
Atherton Seidell (1911).
Solubilities of Inorganic and Organic Substances . the New York Public Library: D. Van Nostrand Company. p. 83.
^
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 .
^ 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 .
^ 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 .
^ Bhaumik, B. B.; Chattopadhyay, R. K. (April 1981).
"Oxalatooxovanadates (IV)" (PDF) . Indian J. Chem . 20A : 417–419.
^ 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 .
^ 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.
Bibcode :
2004AcCrE..60M.659S .
doi :
10.1107/S1600536804009626 .
ISSN
1600-5368 .
^ 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).
^ 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 .
^ 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 .
^ 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 .
^ 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 .
^
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 .
^
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.
^ 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 .
^
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 .
^ 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 .
^ Kazdobin, K. A.; Diamant, V. A.; Trachevskii, V. V.
"MICROWAVE – ASSISTED SYNTHESIS OF BIS (OXALATO) ALKALI METAL BORATES" .