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]

Contents

Formation

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

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

List

formulanameformula weightcrystal formspace groupunit cell Åvolume Å3densitypropertiesreferences
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)2yttrium oxalate carbonate421.876orthorhombicC2221a = 7.8177, b = 14.943, c = 9.4845, Z = 41108.02.526 [8]
Ba[ZrO(C2O4)(CO3)] [9]
[Ce(H2O)]2[(C2O4)2(CO3)]·2.5H2OtriclinicP1_a 6.329 b 8.743 c 13.000, α 105.61° β 90.55° γ 105.10° [10]
Pr4(C2O4)4(CO3)2]·3H2Ocatena(bis(μ4-Oxalato)-(μ3-oxalato)-(μ2-oxalato)-bis(μ6-carbonato)-bis(μ2-aqua)-diaqua-tetra-praseodymium hydrate)triclinicP1_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]·3H2Ocatena-[bis(μ4-Oxalato)-(μ3-oxalato)-(μ2-oxalato)-bis(μ6-carbonato)-bis(μ2-aqua)-diaqua-tetra-neodymium hydrate]triclinicP1_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)]·H2Odiammonium aqua—carbonato-tri—oxalato-dineodymium(III) hydratetriclinicP1_a=8.706 b=9.530 c=10.327 α = 73.35° β = 86.90° γ = 80.50° Z=2809.692.808 [13]
Eu4(C2O4)4(CO3)2·3H2Ocatena(bis(μ4-Oxalato)-(μ3-oxalato)-(μ2-oxalato)-bis(μ6-carbonato)-bis(μ2-aqua)-diaqua-tetra-europium hydrate)triclinicP1_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)2monoclinicCma = 7.773, b = 14.920, c = 4.7309, β = 90.12° Z = 2 [15]
Pb[ZrО(C2O4)CO3]
Pb4(CO3)2(C2O4)(OH)2535.41monoclinicP21/ca=11.8593 b=5.2486 c=9.0997 β =96.669 Z=4562.586.321colourless [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)] · 1.5H2Oguanidonium μ-carbonate μ-ethylmethylgyoximatedioxylatediuranylate sesquihydratemonoclinicP21a=6.909 b=15.794 c=30.064 β=96.720° Z=432582.383red 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) · 2H2Oguanidinium (3-methyl-1,2-cyclopenadionedioxime)dioxalato (μ-3-methyl-1,2-cyclopenadionedioxato) μ-carbonatodiuranylate dihydratetriclinicP1_a=9.2474 b=14.8562 c=16.8917 α = 68.504° β = 77.721° γ = 89.792° Z=22102.72.108red [22]
(CN3H6)4[(UO2)2(CO3)(C2O4)2(C7H10N2O2)] · H2O [20]
NH4(CN3H6)3[(UO2)2(C7H10N2O2)(CO3)(C2O4)2] · 2H2Oammonium guanidinium dioxalato (μ-3-methyl-1,2-cyclopenadionedioxato) μ-carbonatodiuranylate dihydrateorthorhombicP212121a=9.904 b=17.400 c=18.757 Z=43232.22.393red [22]
(CN3H6)4[(UO2)2(CO3)(C2O4)2(C6H10N2O2)] · H2Oguanidinium dioxalato μ-diethylglyoximato μ-carbonatodiuranylate monohydrate1176.59monoclinicP21/na=7.6140 b=15.4388 c=28.010 β=95.99° Z=43274.62.387orange [23]
(CN3H6)2(C2H2N2)[(UO2)2(CO3)(C2O4)2(C6H10N2O2)] · 3H2Oguanidinium ethylenediammonium dioxalato μ-diethylglyoximato μ-carbonatodiuranylate monohydrateorange [23]
[C(NH2)3]10[(UO2)6(μ3-O)2(μ2-OH)2(C2O4)4(CO3)4]· 2H2O2913.21triclinicP1_a=11.5919 b=11.7868 c=13.3545 α = 102.637° β = 93.278° γ = 95.273° Z=11759.72.749yellow [24]
PuPlutonium(III) oxalate carbonate [25]

References

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