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Carbonate oxalate

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The carbonate oxalates are mixed anion compounds that contain both carbonate (CO3) and oxalate (C2O4) anions. Most compounds incorporate large trivalent metal ions, such as the rare earth elements. Some carbonate oxalate compounds of variable composition are formed by heating oxalates.[1]

Formation

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One method to form carbonate oxalates is to heat a metal salt with ascorbic acid, which decomposes to oxalate and carbonate and combines with the metal.[2]

Reactions

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When heated, oxalate carbonates decompose to carbon monoxide and carbonates, which form oxides at higher temperatures.[2]

List

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formula name formula weight crystal form space group unit cell Å volume Å3 density properties references
Sc [3]
K4Ti2O2(C2O4)3·CO3 [4]
[Co*(C2O4)(CO3)]2− anionic complex [5]
[CoIII(CO3)(C2O4)(NH3)2]- anionic complex [6]
Sr[TiO(C2O4)CO3] [7]
[Y(H2O)]2(C2O4)(CO3)2 yttrium oxalate carbonate 421.876 orthorhombic C2221 a = 7.8177, b = 14.943, c = 9.4845, Z = 4 1108.0 2.526 [8]
Ba[ZrO(C2O4)(CO3)] [9]
[Ce(H2O)]2[(C2O4)2(CO3)]·2.5H2O triclinic P1_ a 6.329 b 8.743 c 13.000, α 105.61° β 90.55° γ 105.10° [10]
Pr4(C2O4)4(CO3)2]·3H2O catena(bis(μ4-Oxalato)-(μ3-oxalato)-(μ2-oxalato)-bis(μ6-carbonato)-bis(μ2-aqua)-diaqua-tetra-praseodymium hydrate) triclinic P1_ a 6.298 b 8.673 c 12.970, α 105.42° β 90.55° γ 105.01° [11]
Pr2(C2O4)(CO3)2 [12]
Nd4(C2O4)4(CO3)2]·3H2O catena-[bis(μ4-Oxalato)-(μ3-oxalato)-(μ2-oxalato)-bis(μ6-carbonato)-bis(μ2-aqua)-diaqua-tetra-neodymium hydrate] triclinic P1_ a 6.273(6)Å b 8.616(7)Å c 12.928(9)Å, α 105.50(6)° β 90.52(7)° γ 105.00(6)° [11]
(NH4)2[Nd2(CO3)(C2O4)3(H2O)]·H2O diammonium aqua—carbonato-tri—oxalato-dineodymium(III) hydrate triclinic P1_ a=8.706 b=9.530 c=10.327 α = 73.35° β = 86.90° γ = 80.50° Z=2 809.69 2.808 [13]
Eu4(C2O4)4(CO3)2·3H2O catena(bis(μ4-Oxalato)-(μ3-oxalato)-(μ2-oxalato)-bis(μ6-carbonato)-bis(μ2-aqua)-diaqua-tetra-europium hydrate) triclinic P1_ a 6.179 b 8.464 c 12.856, α 105.13° β 90.46° γ 104.86° [11]
[Eu(H2O)]2(C2O4)(CO3)2 [14]
[Gd(H2O)]2(C2O4)(CO3)2 [14]
[Tb(H2O)]2(C2O4)(CO3)2 [14]
[Dy(H2O)]2(C2O4)(CO3)2 [14]
[Ho(H2O)]2(C2O4)(CO3)2 [14]
Er2(CO3)2(C2O4)(H2O)2 monoclinic Cm a = 7.773, b = 14.920, c = 4.7309, β = 90.12° Z = 2 [15]
Pb[ZrО(C2O4)CO3]
Pb4(CO3)2(C2O4)(OH)2 535.41 monoclinic P21/c a=11.8593 b=5.2486 c=9.0997 β =96.669 Z=4 562.58 6.321 colourless [16]
(NH4)4[Th(CO3)2(C2O4)2]•0.5Н2O [17]
(NH4)4[Th(CO3)2(C2O4)2]•10Н2O [17]
(CN3H6)3(NH4)[Th(CO3)2(C2O4)2]•3Н2O [17]
(CN3H6)3(NH4)[Th(CO3)3(C2O4)]•1.5Н2O [17]
(CN3H6)3(NH4)[Th(CO3)3(C2O4)]•3Н2O [17]
(CN3H6)6[Th2(CO3)5(C2O4)] hexaguandinium pentacarbonatooxalato dithorium [18]
(CN3H6)6[Th2(CO3)5(C2O4)2]•4Н2O [17]
(CN3H6)6[Th2(CO3)5(C2O4)2]•8Н2O [17]
(CN3H6)6[Th2(CO3)4(C2O4)3]•14Н2O [17]
(CN3H6)8[Th2(CO3)7(C2O4)] [17]
(CN3H6)8[Th2(CO3)7(C2O4)]•5Н2O [17]
(CN3H6)8[Th2(CO3)7(C2O4)]•6Н2O [17]
(CN3H6)8[Th2(CO3)5(C2O4)3]•Н2O [17]
(CN3H6)10[Th2(CO3)8(C2O4)]•8Н2O [17]
Na4[Th2(OH)2(CO3)4(C2O4)]•4Н2O [17]
Na4[Th2(OH)6(CO3)2(C2O4)]•2Н2O [17]
Na8Th(C2O4)2(CO3)4 •11Н2O [19]
Na8[Th(CO3)5(C2O4)]•11Н2O [17]
Na10[Th(CO3)5(C2O4)2]•11Н2O [17]
Na10[Th(CO3)5(C2O4)2]•16Н2O [17]
Na10[Th(OH)2(CO3)3(C2O4)3]•8Н2O [17]
Na10[Th(OH)2(CO3)3(C2O4)3] [17]
Na12[Th(CO3)6(C2O4)2]•11Н2O [17]
K2[Th2(OH)2(CO3)3(C2O4)]•2Н2O [17]
K2[Th2(OH)2(CO3)3(C2O4)] [17]
K4[Th(CO3)3(C2O4)]•6Н2O [17]
K5[Th2(OH)(CO3)4(C2O4)2]•2Н2O [17]
K6[Th(CO3)4(C2O4)]•8Н2O [17]
K6[Th(CO3)3(C2O4)2]•4Н2O [17]
K6[Th2(CO3)5(C2O4)2]•2Н2O [17]
K6[Th2(CO3)4(C2O4)3]•6Н2O [17]
K8[Th2(CO3)5(C2O4)3]•13Н2O [17]
K8[Th2(CO3)5(C2O4)3]•16Н2O [17]
K10[Th2(CO3)7(C2O4)2]•8Н2O [17]
K10[Th2(CO3)7(C2O4)2]•12Н2O [17]
K10[Th2(CO3)7(C2O4)2]•14Н2O [17]
K10[Th2(CO3)5(C2O4)4]•5Н2O [17]
K10[Th2(CO3)5(C2O4)4]•7Н2O [17]
(NH4)(CN3H6)3[(UO2)2(CO3)(C2O4)2(C3H4N2O2)] · H2O [20]
(CN3H6)4[(UO2)2(CO3)(C2O4)2(C5H8N2O2)] · 1.5H2O guanidonium μ-carbonate μ-ethylmethylgyoximatedioxylatediuranylate sesquihydrate monoclinic P21 a=6.909 b=15.794 c=30.064 β=96.720° Z=4 3258 2.383 red plates [20][21]
(CN3H6)4[(UO2)2(CO3)(C2O4)2(C6H8N2O2)] · 3H2O [20]
(NH4)(CN3H6)4[(UO2)2(CO3)(C2O4)2(C6H4N2O2)] · H2O [20]
(CN3H6)4[(UO2)2(C6H8N2O2)(CO3)(C2O4)2] · (C6H10N2O2) · 2H2O guanidinium (3-methyl-1,2-cyclopenadionedioxime)dioxalato (μ-3-methyl-1,2-cyclopenadionedioxato) μ-carbonatodiuranylate dihydrate triclinic P1_ a=9.2474 b=14.8562 c=16.8917 α = 68.504° β = 77.721° γ = 89.792° Z=2 2102.7 2.108 red [22]
(CN3H6)4[(UO2)2(CO3)(C2O4)2(C7H10N2O2)] · H2O [20]
NH4(CN3H6)3[(UO2)2(C7H10N2O2)(CO3)(C2O4)2] · 2H2O ammonium guanidinium dioxalato (μ-3-methyl-1,2-cyclopenadionedioxato) μ-carbonatodiuranylate dihydrate orthorhombic P212121 a=9.904 b=17.400 c=18.757 Z=4 3232.2 2.393 red [22]
(CN3H6)4[(UO2)2(CO3)(C2O4)2(C6H10N2O2)] · H2O guanidinium dioxalato μ-diethylglyoximato μ-carbonatodiuranylate monohydrate 1176.59 monoclinic P21/n a=7.6140 b=15.4388 c=28.010 β=95.99° Z=4 3274.6 2.387 orange [23]
(CN3H6)2(C2H2N2)[(UO2)2(CO3)(C2O4)2(C6H10N2O2)] · 3H2O guanidinium ethylenediammonium dioxalato μ-diethylglyoximato μ-carbonatodiuranylate monohydrate orange [23]
[C(NH2)3]10[(UO2)6(μ3-O)2(μ2-OH)2(C2O4)4(CO3)4]· 2H2O 2913.21 triclinic P1_ a=11.5919 b=11.7868 c=13.3545 α = 102.637° β = 93.278° γ = 95.273° Z=1 1759.7 2.749 yellow [24]
Pu Plutonium(III) oxalate carbonate [25]

References

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