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Manganese oxalate
Names
Other names
Manganese(II) oxalate, Manganese(2+) oxalate, Lindbergite
Identifiers
ChemSpider
ECHA InfoCard
100.010.335
EC Number
UNII
InChI=1S/C2H2O4.Mn/c3-1(4)2(5)6;/h(H,3,4)(H,5,6);/q;+2/p-2
Key: RGVLTEMOWXGQOS-UHFFFAOYSA-L
C(=O)(C(=O)[O-])[O-].[Mn+2]
Properties
C 2 Mn O 4
Molar mass
142.956 g·mol−1
Appearance
Light pink crystals
Density
2.43
insoluble
1.7× 10−7
[1]
Hazards
GHS labelling :
Warning
H302 ,
H312
P264 ,
P270 ,
P280 ,
P301+P312 ,
P302+P352 ,
P312 ,
P322 ,
P330 ,
P363 ,
P501
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).
Chemical compound
Manganese oxalate is a chemical compound, a salt of
manganese and
oxalic acid with the chemical formula MnC2 O4 .
[2]
[3] The compound creates light pink crystals, does not dissolve in water, and forms crystalline hydrates.
[4] It occurs naturally as the mineral
Lindbergite .
[5]
Synthesis
Exchange reaction between
sodium oxalate and
manganese chloride :
M
n
C
l
2
+
N
a
2
C
2
O
4
+
2
H
2
O
→
M
n
C
2
O
4
⋅
2
H
2
O
↓
+
2
N
a
C
l
{\displaystyle {\mathsf {MnCl_{2}+Na_{2}C_{2}O_{4}+2H_{2}O\ {\xrightarrow {}}\ MnC_{2}O_{4}\cdot 2H_{2}O\downarrow +2NaCl}}}
Physical properties
Manganese oxalate forms light pink crystals.
It does not dissolve in water, p Ksp = 6.8.
Forms crystalline hydrates of the composition MnC2 O4 •n H2 O, where n = 2 and 3.
[6]
Crystalline hydrate of the composition MnC2 O4 •2H2 O forms light pink crystals of the
orthorhombic system ,
space group P 21 21 21 , cell parameters a = 0.6262 nm, b = 1.3585 nm, c = 0.6091 nm, Z = 4, melts in its own crystallization water at 100°C.
[7]
[8]
Chemical properties
Decomposes on heating:
M
n
C
2
O
4
→
215
o
C
M
n
O
+
C
O
↑
+
C
O
2
↑
{\displaystyle {\mathsf {MnC_{2}O_{4}\ {\xrightarrow {215^{o}C}}\ MnO+CO\uparrow +CO_{2}\uparrow }}}
Application
Manganese oxalate is used as an auxiliary
siccative .
Manganese oxalate precursor is used to synthesize single phase nanoparticles of various manganese oxides, such as MnO, Mn2 O3 , and Mn3 O4 .
[9]
See also
References
^ John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–188.
ISBN
978-1138561632 .
^ Lunge, Georg (1924).
Lunge and Keane's Technical Methods of Chemical Analysis. 2d Ed., Edited by Charles A. Keane ...and P.C.L. Thorne . Gurney and Jackson. p. 61. Retrieved 5 August 2021 .
^ Young, Philena Anne (1928).
The Volumetric Determination of Vanadium and Chromium in Special Alloy Steels: Ceric Sulfate as a Volumetric Oxidizing Agent . Mack Printing Company. p. 74. Retrieved 5 August 2021 .
^ Donkova, B.; Mehandjiev, D. (2004).
"Mechanism of decomposition of manganese(II) oxalate dihydrate and manganese(II) oxalate trihydrate" . Thermochimica Acta . 421 (1–2): 141–149.
doi :
10.1016/j.tca.2004.04.001 .
ISSN
0040-6031 . Retrieved 5 August 2021 .
^ Atencio, Daniel; Coutinho, José M.V.; Graeser, Stefan; Matioli, Paulo A.; Menezes Filho, Luiz A.D. (2004).
"Lindbergite, a new Mn oxalate dihydrate from Boca Rica mine, Galiléia, Minas Gerais, Brazil, and other occurrences" . American Mineralogist . 89 (7): 1087–1091.
Bibcode :
2004AmMin..89.1087A .
doi :
10.2138/am-2004-0721 .
ISSN
1945-3027 .
S2CID
100604132 . Retrieved 1 December 2021 .
^ Nedyalkova, Miroslava; Antonov, Vladislav (1 January 2018).
"Manganese oxalates - structure-based Insights" . Open Chemistry . 16 (1): 1176–1183.
doi :
10.1515/chem-2018-0123 .
ISSN
2391-5420 .
S2CID
104343447 .
^ Puzan, Anna N.; Baumer, Vyacheslav N.; Lisovytskiy, Dmytro V.; Mateychenko, Pavel V. (1 April 2018).
"Structure disordering and thermal decomposition of manganese oxalate dihydrate, MnC2O4·2H2O" .
Journal of Solid State Chemistry . 260 : 87–94.
Bibcode :
2018JSSCh.260...87P .
doi :
10.1016/j.jssc.2018.01.022 .
ISSN
0022-4596 . Retrieved 5 August 2021 .
^ Donkova, Borjana; Avdeev, Georgi (1 August 2015).
"Synthesis and decomposition mechanism of γ-MnC2O4·2H2O rods under non-isothermal and isothermal conditions" .
Journal of Thermal Analysis and Calorimetry . 121 (2): 567–577.
doi :
10.1007/s10973-015-4590-4 .
ISSN
1588-2926 .
S2CID
97032400 . Retrieved 5 August 2021 .
^ Ahmad, Tokeer; Ramanujachary, Kandalam V.; Lofland, Samuel E.; Ganguli, Ashok K. (24 November 2004).
"Nanorods of manganese oxalate: a single source precursor to different manganese oxide nanoparticles (MnO, Mn2O3, Mn3O4)" .
Journal of Materials Chemistry . 14 (23): 3406–3410.
doi :
10.1039/B409010A .
ISSN
1364-5501 . Retrieved 5 August 2021 .
Manganese(-I) Manganese(0) Manganese(I) Manganese(II) Manganese(II,III) Manganese(II,IV) Manganese(III) Manganese(IV) Manganese(V) Manganese(VI) Manganese(VII)