An oxalate chloride or oxalato chloride is a mixed anion compound contains both oxalate and chloride anions.
Related compounds include oxalate fluorides and oxalate bromides.
Production Oxalate chlorides may be produced by treating an oxalate salt with concentrated hydrochloric acid, or with a metal oxide dissolved in oxalic acid and hydrochloric acid solutions that are evaporated.
List nameformulacrystalspace groupcellvolumedensitycommentrefCa2(C2O4)Cl2•2H2OmonoclinicI2/ma=6.936 b=7.382 c=7.443 β=94.3°loses water over 205°C; refract: α=1.500 β=1.545 γ=1.568 2V=71° (−)Ca2(C2O4)Cl2•7H2OtriclinicPa = 7.3928 b = 8.9925 c = 10.484 α = 84.070 β = 70.95 γ = 88.545°655.3looses water at 25°C to 2H2O; refract: α=1.571 β=1.648 γ=1.718 2V=87° (−)Ca4(C2O4)3Cl2•8H2Odubiousoctakis(ethyl(dimethyl)ammonium) dodecakis(μ-oxalato)-tetrachloro-tetra-chromium-tetra-manganese[NH(CH3)2(C2H5)]8[Mn4Cl4Cr4(C2O4)12]monoclinicP21a=13.8321 b=17.1042 c=20.4209 β=91.874°octakis(diethyl(methyl)ammonium) dodecakis(μ-oxalato)-tetrachloro-tetra-chromium-tetra-manganese[NH(CH3)(C2H5)2]8[Mn4Cl4Cr4(C2O4)12]monoclinicP21a=14.1863 b=17.3479 c=20.4140 β=91.937°DABCO=1,4-diazabicyclo[2.2.2]octane; (DABCO-H+)2(DABCO-2H2+)[MnII(CH3OH)(Cl−)CrIII(oxalate)3]2−2(CH3OH)triclinicPa=8.093 b=9.070 c=19.574 α=83.471° β=89.875° γ=86.765°tetrakis(methylammonium) tetrakis(μ-oxalato)-octachloro-tetra-iron(iii) pentahydrate(MeNH3)2[Fe2(ox)2Cl4]·2.5H2OmonoclinicP21/ca 10.7832 b 13.913 c 13.0578 β 104.060°methylammonium (μ-hydroxo)-bis(μ-oxalato)-dichloro-di-iron(iii) trihydrateMeNH3[Fe2(OH)(ox)2Cl2]·2H2OmonoclinicCca=8.945 b=14.936 c=12.408 β=108.531°methylammonium oxonium bis(μ-oxalato)-(μ-oxo)-dichloro-di-iron(iii) dihydrate(H3O)(MeNH3)[Fe2O(ox)2Cl2]·3H2OorthorhombicFdd2a=14.914 b=23.507 c=9.261DMF = dimethylformamideFe2(C2O4)Cl4(DMF)4triclinicPa=8.3919 b=8.7834 c=11.2881 α=70.248° β=71.993° γ=64.423°(dimim)2[Fe2Cl4(μ-ox)]ionic liquidL2=1,4-bis(imidazol-1-ylmethyl)benzene bis(1,1'-(1,4-Phenylenebis(methylene))bis-1H-imidazol-3-ium) (μ2-oxalato)-tetrachloro-bis(oxalato)-di-iron(iii)(H2-L2)2{Fe2(C2O4)3Cl4}triclinicPa=10.6758 b=10.7457 c=10.8774 α=113.219° β=109.138° γ=99.294° Z=11020.81.624emeraldtetramelaminium trioxalatoferrate(III) chloride dihydrate(C3H7N6)4{Fe(C2O4)3}Cl·2H2OmonoclinicP21/ca=11.597 b=22.299 c=13.655 β=94.344° Z=435211.698greenmethylammonium (μ-aqua)-tris(μ-chloro)-(μ-oxalato)-iron(iii)-potassiumK(MeNH3)[Fe(ox)Cl3(H2O)monoclinicP21/ma=8.725 b=7.508 c=9.026 β=112.421°diethylmethylammonium[NH(CH3)(C2H5)2][FeCl2(C2O4)]monoclinicP21/ca=8.5125 b=10.775 c=14.9703 β=104.798° Z=41327.61.516yellow; proton conductorbis(Tetramethylammonium) bis(μ2-oxalato)-tetrachloro-di-iron(iii)Me4N[FeIII(ox)Cl2]monoclinicP21/ca=7.9441 b=8.6093 c=17.8251 β=91.869hexakis(Triethylammonium) hexakis(μ2-oxalato)-dodecachloro-hexa-iron(iii)Et3NH[FeIII(ox)Cl2]triclinicPa=10.9609 b=14.4602 c=14.5780 α=85.006° β=78.845° γ=83.0191Triethylammonium (μ2-oxalato)-dichloro-iron(iii)Et3NH[FeIII(ox)Cl2]orthorhombicFdd2a=13.5878 b=37.972 c=10.8210bis(Tetra-n-butylammonium) bis(μ2-oxalato)-tetrachloro-di-iron(iii)n-Bu4N[FeIII(ox)Cl2]monoclinicP21/ca=8.8836 b=15.1939 c=17.968 β=91.556°[Fe(oxalato)Cl2]3(3,5-dimethylpyrazole)2(3,5- dimethylpyrazolium)2monoclinicC2/ca=19.527 b=11.867 c=19.429 β=115.66° Z=44058.201.684greenBETS = Bis(ethylenedithio)tetraselenafulvaleneκ-BETS2[FeIII(C2O4)Cl2]black; metallic;bis(2-(5,6-dihydro[1,3]dithiolo[4,5-b][1,4]dithiin-2-ylidene)-5,6-dihydro[1,3]dithiolo[4,5-b][1,4]dithiin-1-ium) bis(μ-oxalato)-tetrachloro-di-iron(iii)[BEDT-TTF][Fe(C2O4)Cl2]triclinicPa=8.896 b=11.401 c=11.427 α=112.062° β=103.775° γ=100.328°BEDT-TTF = Bis(ethylenedithio)tetrathiafulvalene(BEDT-TTF)[Fe(C2O4)Cl2](CH2Cl2)monoclinicP21/ca=8.858 b=11.012 c=14.932 β=103.39°tris(ethylenediamine)cobalt(III)chloride oxalate trihydrate[Co(en)3]Cl(C2O4)·3H2OmonoclinicC2/ca = 19.932 b = 9.3344 c = 19.088 β = 96.846° Z = 8dpyam=di-2-pyridylamine; (μ2-Oxalato)-bis(di-2-pyridylamine)-dichloro-di-copper(ii)Cu2(dpyam)2(μ-C2O4)(Cl)2triclinicPa=7.4122 b=8.6586 c=9.8002 α=87.900° β=72.022° γ=71.845°L = 3,5-dimethyl-1H-pyrazoleCu2(C2O4)(L)2Cl2(MeOH)2triclinicPa=7.244 b=8.039 c=8.848 α=92.16° β=92.73° γ=96.21°bpy=bipyridine[Fe(bpy)3]2[NbO(C2O4)3]Cl·11H2O[Fe(bpy)3]2[NbO(2O4)3]Cl·12H2OorthorhombicP212121a=14.975 b=21.708 c=22.351 Z=472661.530dark red[Co(bpy)3]2[NbO(C2O4)3]Cl·11H2OmonoclinicP21/ca=23.548 b=13.631 c=22.812 β=101.0471871.536orange red[Co(bpy)3]2[NbO(C2O4)3]Cl·12H2OorthorhombicP212121a=15.103 b=22.075 c=22.386 Z=474631.495brown[Ni(bpy)3]2[NbO(C2O4)3]Cl·11H2OmonoclinicP21/ca=23.875 b=13.265 c=23.115 β=101.69 Z=471691.539pink[Ni(bpy)3]2[NbO(C2O4)3]Cl·12H2OorthorhombicP21212115.058 b=22.039 c=22.398 Z=474331.500dark pink[Cu(bpy)3]2[NbO(C2O4)3]Cl·12H2OorthorhombicP212121a=15.035 b=22.267 c=22.538 Z=475451.487blue[Zn(bpy)3]2[NbO(C2O4)3]Cl·11H2OmonoclinicP21/c24.070 b=13.332 c=23.168 β=102.19 Z=472671.530pink[Zn(bpy)3]2[NbO(C2O4)3]Cl·12H2Otris(Tetraethylammonium) tetrakis(μ3-sulfido)-(oxalato-O,O')-trichloro-cyano-tri-iron-molybdenum(Et4N)5{[C2O4)MoFe3S4Cl2]2(μ-CN)(μ-S)}monoclinicP21/na=10.331 b=22.580 c=19.083 β=91.97°double cubane structure(μ2-Oxalato)-dichloro-bis(η6-p-cymene)-di-ruthenium[Ru2(μ-η4-C2O4)Cl2(η6-p-PriC6H4Me)2]monoclinicP21/na=7.571 b=8.998 c=16.528 β=95.52° Z=21120.73yellowchloro-(oxalato)-tris(pyridine)-rhodiummer-[Rh(C2O4)Cl(py)3]orthorhombicP212121a=9.9999 b=12.0930 c=14.9368 Z=41806.21.705yellowCHLOROPENTAAMMINECHROMIUM(III) BIS(OXALATO)PALLADATE[Cr(NH3)5Cl][Pd(C2O4)2]triclinica = 3.225 b = 10.290 c = 11.390 α = 116.5° β = 97.9° γ = 91.2°334.5C(NH2)3Cd(C2O4)Cl(H2O)·H2OtriclinicPa=6.8136 b=7.4890 c=10.0515 α=84.082° β=77.806° γ=88.813°band gap 3.76 eVSnC2O4Cl2SnC2O4Cl2 . CuBr2 1/4EtOHgreenSnC2O4Cl2 . CuCl2 . H2OgreenSnC2O4Cl2 . CoBr2 1/8EtOHrose colour(Et4N)2C2O4 . SnCl2F2 . 2H2O:white(Me4N)2Sn(C2O4)Cl2white(Et4N)2Sn(C2O4)Cl2 .(Et4N)2C2O4(SnCl4)2 . EtOHwhiteSn(C2O4)2 . 2[SnCl4 . (Pyridine)2]white(Et4N)2SnCl6 . (Et4N)2C2O4 . 2SnC2O4(OH)2white(NH4)2Sb(C2O4)Cl3orthorhombicP212121a=8.6961 b=8.7844 c=13.5956 Z=41038.572.253K2Sb(C2O4)Cl3orthorhombicP212121a=8.3966 b=8.6023 c=13,6342 Z=4984.802.660Rb2Sb(C2O4)Cl3orthorhombicP212121a=8.6769 b=8.8485 c=13.8014 Z=41059.643.053birefringence 0.22@546 nm;NLO 2.1 × KH2PO4Ba2Mn2Cl2(C2O4)3·4H2OmonoclinicC2/ca=22.916 b=8.248 c=9.904 β=99.53°Ba2Fe2Cl2(C2O4)3·4H2OmonoclinicC2/ca=22.798 b=8.297 c=9.849 β=99.90°Ba2Co2Cl2(C2O4)3·4H2OmonoclinicC2/ca=22.675 b=8.230 c=9.757 β=100.00°purpleBaCd(C2O4)1.5Cl(H2O)2monoclinicC2/ca=23.101 b=8.253 c=10.040 β 99.14°band gap 4.53 eVLa(C2O4)ClmonoclinicP21/na=8.489 b=16.19 c=5.880 β=104.14°La(C2O4)Cl·3H2OCe(C2O4)ClCe(C2O4)Cl·3H2OPr(C2O4)Cl·3H2Ostable to 163°CNd(C2O4)Cl·3H2Ostable to 167°C; dec 510° to NdOClSm(C2O4)Cl·3H2Ostable to 174°C; dec at 347° to EuC2O4Eu(C2O4)Cl·3H2Ostable to 178°CGd(C2O4)Cl·3H2O(Et4N)2Sn(C2O4)Cl2 . (Et4N)2C2O4(SnCl4)2 . EtOH[(Me4N)2C2O4SnCl4]2 . [(Me4N)2Sn(C2O4)2Cl2]2 . Sn(WO4)2[Pt(HC2O4)Cl3]2−[Pt(HC2O4)(C2O4)Cl]2−K2[Pt(C2O4)Cl2]·H2OtriclinicPa=7.136 b=7.308 c=10.130 α=86.75° β=74.58° γ=54.28° Z=2457.73.27[Pt(NH3)5Cl][Cr(C2O4)3] · 4H2OorthorhombicPccna=38.901 b=13.7267 c=14.9141[Pt(NH3)5Cl][Fe(C2O4)3] · 4H2OorthorhombicPccna=39.0123 b=13.7232 c=14.8990[Pt(NH3)5Cl][Co(C2O4)3] · 2H2OmonoclinicP21a=8.5158 b=12.6409 c=8.5726 β=105.000°lead chloride oxalatePb2Cl2(C2O4)monoclinicC2/ma=5.9411 b=5.8714 c=9.4212 β=95.232° Z=2327.265.82dec 350°C to Pb, Pb5O2Cl6 and Pb3O2Cl2Th4Cl4(C2O4)6•20H2OPlutonium(III) oxalato chloride?Pu(C2O4)Cl·3H2Oblue; biaxial (−)Am(C2O4)Cl·3H2OmonoclinicP21/na=5.852 b=15.823 c=8.351 β=104.243°
References