The oxalate phosphites are chemical compounds containing oxalate and phosphite anions. They are also called oxalatophosphites or phosphite oxalates. Oxalate phosphates can form metal organic framework compounds.
Related compounds include the nitrite oxalates, arsenite oxalates, phosphate oxalates and oxalatophosphonates.
The oxalate ion is rectangular and planar. The phosphite ion is shaped as a triangular pyramid. Because of high charge and stiff shape they will bridge across more than one cation, in particular those hard cations with a higher charge such as +3. Hydrogen can convert some of the oxygen on the anions to OH and reduce the charge. Many oxalate phosphite compounds have microporous structures where amines direct the structure formation.
List namechemcrystal system space groupunit cell ÅvolumedensitycommentreferencesN,N′-dimethylpiperazine[Mg(H2PO3)2(C2O4)0.5](C6N2H16)0.5monoclinicP21/na=9.1064 b=8.6820 c=14.0425 β=102.561° Z=41083.651.768proton conductorethane-1,2-bis(ammonium) bis(μ-hydrogen phosphonato)-oxalato-magnesiummonoclinicP21a=7.3313 b=9.0913 c=8.7803 β=93.714°N1,N1,N3,N3-tetramethylpropane-1,3-bis(ammonium) bis(μ-hydrogen phosphonato)-bis(μ-oxalato)-di-magnesium monohydratetriclinicP1a=8.2680 b=8.8920 c=9.5432 α=110.668° β=104.445° γ=107.384°(bis(dimethylammonium) 1,4-dimethylpiperazine-1,4-di-ium bis(bis(μ-oxalato)-(μ-hydrogen phosphito)-aqua-di-magnesium) dihydrate)[Mg2(H2O)(HPO3)(C2O4)2](C6N2H16)0.5·(C2NH8)·H2OmonoclinicP21/ca=9.0231 b=13.0696 c=15.691 β=102.615°proton conductorpeha = pentaethylenehexamine[(H6peha)0.17(H2O)1.5][Al2(HPO3)2(C2O4)(HCOO)] +formate(H13C5NOH)0.5(H2C13H14N2)0.25[Al2(HPO3)2(C2O4)(OH)(H2O)]0.5H2Opiperazine-1,4-diium (μ-hydrogen phosphato)-(ethanedioato)-oxido-vanadium monohydrateV2O2(HPO4)(HPO3)(C2O4)2·(C4N2H12)2·2H2OmonoclinicP21/na=12.5398 b=6.4390 c=15.4038 β=107.251°proton conductorLi2(VOHPO3)2C2O4•6H2OtriclinicPa=6.3592, b=8.0789, c=9.1692, α=64.390°, β=87.277°, γ=67.624°Li2(VOHPO3)2C2O4•4H2OmonoclinicP21/aa=6.3555 b=12.6368 c=9.0242 β=105.167°Li2(VO)2(HPO3)2C2O4diammonium (μ-oxalato)-bis(μ-phosphonato)-dioxo-di-vanadium hydrate(NH4)2(VOHPO3)2C2O4 2·9H2OtriclinicPa = 6.3844, b = 7.2278, c = 9.2965, α = 67.260°, β = 72.927°, γ = 85.848°(μ6-Oxalato)-bis(μ4-hydrogen phosphonato)-bis(μ2-aqua)-bis(μ2-oxo)-di-sodium-di-vanadiumNa2(VO)2(HPO3)2C2O4triclinicPa 6.3255 b 6.7760 c 8.0759, α 104.992° β 101.679° γ 99.120° Z=1319.202.413blueNa₂[(VO)₂(HPO₃)₂(C₂O₄)]·2H₂OK2(VO)2(HPO3)2C2O4monoclinicC2/ca 17.75 b 6.370 c 13.977, β 115.42° Z=414272.393bluetetrakis(Guanidinium) (μ4-oxalato)-bis(μ3-hydrogen phosphito)-tetrakis(μ2-oxalato)-diaqua-penta-manganese dihydrate(CN3H6)2·Mn2.5(HPO3)(C2O4)2.5(H2O)·H2OtriclinicPa=9.7205 b=9.7468 c=10.8926 α=83.989° β=75.467° γ=78.545°piperazine[C4N2H12][MnII2(HPO3)2(C2O4)]monoclinicP21/ca=6.0627 b=10.7122 c=10.387 β=97.956 Z=2668.12.217pale pinkdab = 1,4-diaminobutaneH2dab·Mn2(HPO3)2(C2O4)(H2O)2monoclinicP21/na = 5.616, b = 15.431, c = 9.445, β = 91.72(2)°, Z = 2818.2ethylenediammonium manganese phosphite-oxalate[C2N2H10][Mn2II(OH2)2(HPO3)2(C2O4)]monoclinicP21/ca 7.837 b 8.755 c 10.100, β 100.605°bis(1-(3-ammoniopropyl)imidazolium) tetrakis(μ-dihydrogen phosphato)-tetrakis(μ-oxalato)-tetra-manganesH2api·Mn2(H2PO4)2(C2O4)2triclinicPa=7.6108 b=9.8476 c=15.2437, α=100.023° β=102.032° γ=110.612°N,N′-dimethylpiperazine (Me2ppz)[Mn(H2PO3)(C2O4)](H2Me2ppz)0.5·H2OmonoclinicP21/na= 9.3396 b= 13.3332 c=9.6168 β=109.495° Z=41128.891.765proton conductor(C6H14N2)0.5Mn(H2PO3)(C2O4)N,N′-dimethylpiperazine (Me2ppz)[Mn2Cl(H2O)(H2PO3)2(C2O4)1.5](H2Me2ppz)triclinicPa=7.4564 b=11.114 c=13.0787 α=92.767° β=99.906° γ=107.304° Z=21013.71.879K2MnII2(H2O)2C2O4(HPO3)2hexagonalP63/ma=9.7371 c=22.49241846.82.547pink[C6N2H14]2[FeIII2F2(HPO3)2(C2O4)21,4-diazabicyclo[2.2.2]octane (DABCO)[C6N2H14]2[FeIII2F2(HPO3)2(C2O4)2]·2H2OmonoclinicP21/na=12.51 b=6.372 c=33.153 β=90.532 Z=42643.01.875colourless; chainsTREN[C6N4H21]2[FeII4(HPO3)2(C2O4)5]·5H2OtriclinicPa=8.719 b=8.827 c=15.908 α=78.617 β=84.047 γ=68.241 Z=21114.11.770brown; network[FeIII2(OH2)2(HPO3)2(C2O4)]·H2OmonoclinicP21/ca=4.875 b=17.707 c=6.984 β=106.728 Z=4577.462.368colourlessethylenediammonium[C2N2H10][FeII2(OH2)2(HPO3)2(C2O4)]monoclinicP21/ca=7.684 b=8.651 c=10.053 β=100.821 Z=4653.62.317brownBAPEN[C8N4H26][FeIII6(HPO3)8(C2O4)3]·4H2OmonoclinicP21/na=8.493 b=16.685 c=16.215 β=95.919 Z=42280.352.157colourlesshomopip[C5N2H14][FeII4(HPO3)2(C2O4)3] monoclinicP21/ca=7.682 b=7.726 c=18.092 β=94.443 Z=41070.82.004brownPiperazinediium bis(μ4-phosphito)-(μ4-oxalato)-bis(μ3-oxalato)-tetra-iron(ii)[C4N2H12][FeII4(HPO3)2(C2O4)3]monoclinicP21/ca 7.7286 b 7.587 c 17.9816 β 98.214°bis(2,6-dimethylpiperazine-1,4-diium) tris(μ-oxalato)-bis(hydrogen phosphonato)-di-cobaltCo2(H2PO3)2(C2O4)3(C6N2H16)2monoclinicP21/ca=5.8605 b=13.6144 c=19.360 β=105.582°1Dtetrakis(dimethylammonium) tetrakis(μ-hydroxyphosphaniumbis(olato))-tetrakis(oxalato)-tetra-cobalt(ii)Co(H2PO3)(C2O4)·(C2H8N)triclinicPa=8.6454 b=9.6156 c=12.7507 α=69.318° β=82.346° γ=74.616°bis(dimethylammonium) bis(μ-hydroxyphosphaniumbis(olato))-bis(μ-oxalato)-di-cobalt(ii)Co(H2PO3)(C2O4)·(C2H8N)monoclinicP21/na=9.5434 b=7.3028 c=14.2274 β=104.395°dab = 1,4-diaminobutane(H2dab)0.5·Co(H2PO3)(C2O4)[C4N2H12][Co4(HPO3)2(C2O4)3]monoclinicP21/ca=7.614 b=7.51 c=17.750 β=97.351 Z=21007.32.466bis(Guanidinium) bis(μ2-hydrogen phosphito)-bis(μ2-oxalato)-di-cobaltCN3H6·Co(H2PO3)(C2O4)monoclinicP21/na=8.8749 b=7.4104 c=15.2333 β=102.172°Co(H2PO3)(C2O4)·(C2H8N)triclinicPCo(H2PO3)(C2O4)·(C2H8N)monoclinicP21/nCo2(H2PO3)2(C2O4)3(C6N2H16)2monoclinicP21/ca=5.8605 b=13.6144 c=19.361 β=105.5821487.91.733pinkCo2(H2PO3)2(C2O4)2(C6N2H16)monoclinicP21/ca=15.3007 b=8.2832 c=16.2601 β=113.487 Z=218902.010pink; proton conductor(C4H14N2)0.5Co(HPO3)(C2O4)N, N-dimethyl-piperazine[Ga2(HPO3)2(H2PO3)2(C2O4)](C6N2H16)monoclinicP21/ca=10.183 b=12.525 c=16.295 β=98.218°N, N-dimethyl-piperazine[Ga2(HPO3)2(H2PO3)(C2O4)](C6N2H16)0.5monoclinicC2/ca=23.462 b=8.1170 c=16.898 β=112.873°N-(3-aminopropyl)morpholine[H2apm][Ga2(H2PO3)2(HPO3)2(C2O4)]orthorhombicPbcma=8.569 b=20.245 c=12.604bis(1,4-Diazoniabicyclo[2.2.2]octane) bis(μ3-hydrogen phosphito)-dihydroxy-bis(oxalato)-di-gallium(iii) dihydrate(C6N2H14)2[Ga2(OH)2(C2O4)2(HPO3)2]·2H2OmonoclinicP21/na 12.401 b 6.283 c 33.306 β 91.197°N,N,N',N'-Tetramethylethylenediammonium bis(μ3-hydrogen phosphito)-(μ2-oxalato)-dihydroxy-di-gallium(iii)(C6N2H18)0.5[Ga(OH)(C2O4)0.5(HPO3)]triclinicPa 6.257 b 8.558 c 9.253, α 93.219° β 108.265° γ 106.956°bis(μ3-Hydrogen phosphito)-(μ2-oxalato)-bis(1H-imidazole)-di-gallium(iii)Ga(C2O4)0.5(C3N2H4)(HPO3)monoclinicP21/ca 8.038 b 8.709 c 11.487, β 91.85°Ga(HPO3)(C2O4)(C3N2H4)·(C3N2H5)orthorhombicPnmaa=13.288, b=6.361, c=1.5364, Z=4[bis(1,4-dimethylpiperazinediium) tetrakis(μ2-phosphito)-tetrakis(μ2-hydrogen phosphito)-bis(μ2-oxalato)-tetra-gallium][Ga2(HPO3)2(H2PO3)2(C2O4)](C6N2H16)monoclinicP21/ca =10.183 b=12.525 c=16.295 β=98.218°[hemikis(1,4-dimethylpiperazinediium) bis(μ3-phosphito)-(μ2-hydrogen phosphito)-(μ2-oxalato)-di-gallium][Ga2(HPO3)2(H2PO3)(C2O4)](C6N2H16)0.5monoclinicC 2/ca =23.462 b= 8.1170 c =16.898, β 112.873°phen = 1,10-phenanthrolineCd2(phen)2(H2PO4)(H2PO3)(C2O4)chainsCd(C10H8N2)(HPO3)(C2O4)0.5catena-(Piperazinedi-ium bis(μ3-hydrogen phosphito)-(μ2-oxalato)-(μ2-hydrogen phosphito)-di-indium)[C4H12N2][In2(HPO3)3(C2O4)]orthorhombicCmcma=6.555 b=15.384 c=18.135[C4N2H12]3[In2(HPO3)2(C2O4)4].4H2O tetrakis(μ-phosphonato)-tris(μ-oxalato)-bis(2-azaniumyl-3-(1H-imidazol-3-ium-5-yl)propanoato)-tetra-indium monohydrateIn2(C6H10N3O2)(HPO3)2(C2O4)1.5·0.5H2OtriclinicPa=8.7050 b=10.4508 c=12.1060 α=107.888° β=103.691° γ=104.046°5-(2-azaniumyl-2-carboxyethyl)-1H-imidazol-3-ium pentakis(μ-phosphonato)-(μ-hydrogen phosphonato)-bis(μ-oxalato)-(2-azaniumyl-3-(1H-imidazol-3-ium-5-yl)propanoato)-tetra-indium(C6H11N3O2)·[In4(C6H10N3O2)(HPO3)5(H2PO3)(C2O4)2]monoclinicP21a=8.3970 b=23.4886 c=9.9675 β=108.292°1,4-diazabicyclo[2.2.2]octane (dabco)C6H14N2[In2(HPO3)3(C2O4)] orthorhombicPna21a = 12.414, b = 7.7166, c = 18.327, Z = 41755.62.542[C4N2H12]2[In2(HPO3)3(C2O4)2].3H2O [C4N2H12]3[In4(HPO3)6(C2O4)3][C4N2H14][In4(H2O)(HPO3)5(C2O4)2].2H2O H[In5(HPO3)6(H2PO3)2(C2O4)2]·(C4N2H11)2·H2OtriclinicPa =7.822 b =10.626 c =13.156, α =94.720° β =92.336° γ =110.181°1-methylpiperazineIn5(HPO3)6(H1.5PO3)2(C2O4)2·(H2C5N2H12)2triclinicPa 10.1574 b 10.4440 c 10.6857, α 70.006° β 76.100° γ 79.337°proton conductor1-ethylpiperazineIn5(HPO3)6(H1.5PO3)2(C2O4)2·(H2C6N2H14)2triclinicPa 10.1904 b 10.4327 c 10.7158, α 69.373° β 77.185° γ 79.268°dbu = 1,8-diazabicyclo[5.4.0]undec-7-eneHdbu·In2(HPO3)2(C2O4)1.5triclinicPa=9.5647 b=9.5781 c=12.1268 α=91.514° β=103.535° γ=112.440°SbHPO3FmonoclinicP21/ca=4.5655 b=13.1125 c=6.7048 β=98.650° Z=4396.823.695Ba2(C2O4)(H2PO3)2monoclinicC2/ca = 12.3829, b = 7.9124, c = 11.0858, β=114.788 (2)°, Z = 4986.103.534colourlessethylenediammoniumC2H10N2·Ba(H2O)2(HC2O4)4monoclinicC2/ma = 12.7393 b = 13.0111 c = 5.6050 β = 104.208 ° Z=2900.621-ethylpiperazine[Ce2(H2PO3)(C2O4)4](C6N2H16)·H3O·3H2OorthorhombicP212121a=12.168 b=13.404 c=16.611proton conductorL-histidineCe2(H2O)2(H2PO3)2(C2O4)3·C6H11N3O2·H2OmonoclinicP21/ca= 10.22 b=29.41 c=8.778 β=101.46° Z=425872.351[Pr(H2O)(C2O4)0.5(HPO3)]·H2OtriclinicPa=6.6764 b=7.0684 c=7.8103 α=111.141° β=95.415° γ=90.457° Z=22.923[Nd(H2O)(C2O4)0.5(HPO3)]·H2OtriclinicPa=6.6544 b=7.0684 c=7.8103 α=111.160° β=95.307° γ=90.590° Z=22.985[Sm(H2O)(C2O4)0.5(HPO3)]·H2O[Eu(H2O)(C2O4)0.5(HPO3)]·H2OtriclinicPa=6.5619 b=6.9442 c=7.7412 α=111.369° β=95.495° γ=90.824° Z=23.173[Gd(H2O)(C2O4)0.5(HPO3)]·H2OtriclinicPa=6.5434 b=6.9311 c=7.7465 α=111.487° β=95.645° γ=90.833° Z=23.244[Ho(H2O)(C2O4)0.5(HPO3)]·H2OtriclinicPa=6.4628 b=6.8519 c=7.6936 α=111.646° β=95.779° γ=91.028° Z=23.421[Er(H2O)(C2O4)0.5(HPO3)]·H2OtriclinicPa=6.4400 b=6.8326 c=7.6747 α=111.654° β=95.757° γ=91.096° Z=23.487[Tm(H2O)(C2O4)0.5(HPO3)]·H2OtriclinicP[Yb(H2O)(C2O4)0.5(HPO3)]·H2OtriclinicPa=6.4075 b=6.8050 c=7.6647 α=111.753° β=95.858° γ=91.204° Z=23.589[Lu(H2O)(C2O4)0.5(HPO3)]·H2OtriclinicP
References