配合物稳定常数Stability Constants of Coordination Compounds 络合反应的平衡常数用配合物稳定常数表示，又称配合物形成常数。此常数值越大，说明形成的配合物越稳定。其倒数用来表示配合物的解离程度，称为配合物的不稳定常数。以下表格中，表 1中除特别说明外是在25下，离子强度I =0；表 2中离子强度都是在有限的范围内，I0。表中n表示累积稳定常数。金属 -无机配位体配合物的稳定常数Stability Constants of Metal Ion-Inorganic Coordination Compounds序号(No.) 配位体(Ligand) 金属离子(Metal ion) 配位体数目n(Number of ligand) lgn 1 NH3Ag+ 1,2 3.24,7.05 Au3+4 10.3 Cd2+1,2,3,4,5,6 2.65,4.75,6.19,7.12,6.80,5.14 Co2+1,2,3,4,5,6 2.11,3.74,4.79,5.55,5.73,5.11 Co3+1,2,3,4,5,6 6.7,14.0,20.1,25.7,30.8,35.2 Cu+1,2 5.93,10.86 Cu2+ 1,2,3,4,5 4.31,7.98,11.02,13.32,12.86 Fe2+1,2 1.4,2.2 Hg2+1,2,3,4 8.8,17.5,18.5,19.28 Mn2+1,2 0.8,1.3 Ni2+1,2,3,4,5,6 2.80,5.04,6.77,7.96,8.71,8.74 Pd2+1,2,3,4 9.6,18.5,26.0,32.8 Pt2+6 35.3 Zn2+1,2,3,4 2.37,4.81,7.31,9.46 2 Br-Ag+1,2,3,4 4.38,7.33,8.00,8.73 Bi3+1,2,3,4,5,6 2.37,4.20,5.90,7.30,8.20,8.30 Cd2+1,2,3,4 1.75,2.34,3.32,3.70, Ce3+1 0.42 Cu+2 5.89 Cu2+1 0.30 Hg2+1,2,3,4 9.05,17.32,19.74,21.00 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 1 页，共 15 页In3+1,2 1.30,1.88 Pb2+1,2,3,4 1.77,2.60,3.00,2.30 Pd2+1,2,3,4 5.17,9.42,12.70,14.90 Rh3+2,3,4,5,6 14.3,16.3,17.6,18.4,17.2 Sc3+1,2 2.08,3.08 Sn2+1,2,3 1.11,1.81,1.46 Tl3+1,2,3,4,5,6 9.7,16.6,21.2,23.9,29.2,31.6 U4+1 0.18 Y3+1 1.32 3 Cl-Ag+1,2,4 3.04,5.04,5.30 Bi3+1,2,3,4 2.44,4.7,5.0,5.6 Cd2+1,2,3,4 1.95,2.50,2.60,2.80 Co3+1 1.42 Cu+2,3 5.5,5.7 Cu2+1,2 0.1, -0.6 Fe2+1 1.17 Fe3+2 9.8 Hg2+1,2,3,4 6.74,13.22,14.07,15.07 In3+1,2,3,4 1.62,2.44,1.70,1.60 Pb2+1,2,3 1.42,2.23,3.23 Pd2+1,2,3,4 6.1,10.7,13.1,15.7 Pt2+2,3,4 11.5,14.5,16.0 Sb3+1,2,3,4 2.26,3.49,4.18,4.72 Sn2+1,2,3,4 1.51,2.24,2.03,1.48 Tl3+1,2,3,4 8.14,13.60,15.78,18.00 Th4+1,2 1.38,0.38 Zn2+1,2,3,4 0.43,0.61,0.53,0.20 Zr4+1,2,3,4 0.9,1.3,1.5,1.2 4 CN-Ag+2,3,4 21.1,21.7,20.6 Au+2 38.3 Cd2+1,2,3,4 5.48,10.60,15.23,18.78 Cu+2,3,4 24.0,28.59,30.30 Fe2+6 35.0 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 2 页，共 15 页Fe3+6 42.0 Hg2+4 41.4 Ni2+4 31.3 Zn2+1,2,3,4 5.3,11.70,16.70,21.60 5 F-Al3+1,2,3,4,5,6 6.11,11.12,15.00,18.00,19.40,19.80 Be2+1,2,3,4 4.99,8.80,11.60,13.10 Bi3+1 1.42 Co2+1 0.4 Cr3+1,2,3 4.36,8.70,11.20 Cu2+1 0.9 Fe2+1Fe3+1,2,3,5Ga3+1,2,3Hf4+1,2,3,4,5,6Hg2+1In3+1,2,3,4Mg2+1Mn2+1Ni2+1Pb2+1,2Sb3+1,2,3,4Sn2+1,2,3Th4+1,2,3,4TiO2+1,2,3,4Zn2+1Zr4+1,2,3,4,5,66I-Ag+1,2,3Bi3+1,4,5,6Cd2+1,2,3,4Cu+2Fe3+1Hg2+1,2,3,4Pb2+1,2,3,4精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 3 页，共 15 页Pd2+4Tl+1,2,3Tl3+1,2,3,47OH-Ag+1,2Al3+1,4As3+1,2,3,4Be2+1,2,3Bi3+1,2,4Ca2+1Cd2+1,2,3,4Ce3+1Ce4+1,2Co2+1,2,3,4Cr3+1,2,4Cu2+1,2,3,4Fe2+1,2,3,4Fe3+1,2,3Hg2+1,2,3In3+1,2,3,4Mg2+1Mn2+1,3Ni2+1,2,3Pa4+1,2,3,4Pb2+1,2,3Pd2+1,2Sb3+2,3,4Sc3+1Sn2+1Th3+1,2Ti3+1Zn2+1,2,3,4Zr4+1,2,3,48NO3-Ba2+1精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 4 页，共 15 页Bi3+1Ca2+1Cd2+1Fe3+1Hg2+1Pb2+1Tl+1Tl3+19P2O74-Ba2+1Ca2+1Cd3+1Co2+1Cu2+1,2Hg2+2Mg2+1Ni2+1,2Pb2+1,2Zn2+1,210SCN-Ag+1,2,3,4Bi3+1,2,3,4,5,6Cd2+1,2,3,4Cr3+1,2Cu+1,2Cu2+1,2Fe3+1,2,3,4,5,6Hg2+1,2,3,4Ni2+1,2,3Pb2+1,2,3Sn2+1,2,3Th4+1,2Zn2+1,2,3,411S2O32-Ag+1,2Cd2+1,2精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 5 页，共 15 页Cu+1,2,3Fe3+1Hg2+2,3,4Pb2+2,312SO42-Ag+1Ba2+1Bi3+1,2,3,4,5Fe3+1,2Hg2+1,2In3+1,2,3Ni2+1Pb2+1Pr3+1,2Th4+1,2Zr4+1,2,3精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 6 页，共 15 页金属- 有机配位体配合物的稳定常数表中离子强度都是在有限的范围内，I0。 Stability Constants of Metal Ion-Organic Coordination Compounds序号(No.)配位体 (Ligand)金属离子(Metal ion)配位体数目n(Number of ligand)lgn1乙二胺四乙酸(EDTA)(HOOCCH2)2NCH22Ag+1Al3+1Ba2+1Be2+1Bi3+1Ca2+1Cd2+1Co2+1Co3+1Cr3+1Cu2+1Fe2+1Fe3+1Ga3+1Hg2+1In3+1Li+1Mg2+1Mn2+1Mo(V)1Na+1Ni2+1Pb2+1Pd2+1Sc2+1Sn2+1Sr2+1精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 7 页，共 15 页Th4+1TiO2+1Tl3+1U4+1VO2+1Y3+1Zn2+1Zr4+12 乙酸(Acetic acid) CH3COOH Ag+1,2 0.73,0.64 Ba2+1 0.41 Ca2+1 0.6 Cd2+1,2,3 1.5,2.3,2.4 Ce3+1,2,3,4 1.68,2.69,3.13,3.18 Co2+1,2 1.5,1.9 Cr3+1,2,3 4.63,7.08,9.60 Cu2+(20 ) 1,2 2.16,3.20 In3+1,2,3,4 3.50,5.95,7.90,9.08 Mn2+1,2 9.84,2.06 Ni2+1,2 1.12,1.81 Pb2+1,2,3,4 2.52,4.0,6.4,8.5 Sn2+1,2,3 3.3,6.0,7.3 Tl3+1,2,3,4 6.17,11.28,15.10,18.3 Zn2+1 1.5 3 乙酰丙酮Al3+(30) 1,2 8.6,15.5 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 8 页，共 15 页(Acetyl acetone) CH3COCH2CH3Cd2+1,2 3.84,6.66 Co2+1,2 5.40,9.54 Cr2+1,2 5.96,11.7 Cu2+1,2 8.27,16.34 Fe2+1,2 5.07,8.67 Fe3+1,2,3 11.4,22.1,26.7 Hg2+2 21.5 Mg2+1,2 3.65,6.27 Mn2+1,2 4.24,7.35 Mn3+3 3.86 Ni2+(20) 1,2,3 6.06,10.77,13.09 Pb2+2 6.32 Pd2+(30) 1,2 16.2,27.1 Th4+1,2,3,4 8.8,16.2,22.5,26.7 Ti3+1,2,3 10.43,18.82,24.90 V2+1,2,3 5.4,10.2,14.7 Zn2+(30) 1,2 4.98,8.81 Zr4+1,2,3,4 8.4,16.0,23.2,30.1 4 草酸(Oxalic acid) HOOCCOOHAg+1 2.41 Al3+1,2,3 7.26,13.0,16.3 Ba2+1 2.31 Ca2+1 3.0 Cd2+1,2 3.52,5.77 Co2+1,2,3 4.79,6.7,9.7 Cu2+1,2 6.23,10.27 Fe2+1,2,3 2.9,4.52,5.22 Fe3+1,2,3 9.4,16.2,20.2 Hg2+1 9.66 Hg22+2 6.98 Mg2+1,2 3.43,4.38 Mn2+1,2 3.97,5.80 Mn3+1,2,3 9.98,16.57,19.42 Ni2+1,2,3 5.3,7.64,8.5 Pb2+1,2 4.91,6.76 Sc3+1,2,3,4 6.86,11.31,14.32,16.70 Th4+4 24.48 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 9 页，共 15 页Zn2+1,2,3 4.89,7.60,8.15 Zr4+1,2,3,4 9.80,17.14,20.86,21.15 5 乳酸(Lactic acid) CH3CHOHCOOH Ba2+1 0.64 Ca2+1 1.42 Cd2+1 1.70 Co2+1 1.90 Cu2+1,2 3.02,4.85 Fe3+1 7.1 Mg2+1 1.37 Mn2+1 1.43 Ni2+1 2.22 Pb2+1,2 2.40,3.80 Sc2+1 5.2 Th4+1 5.5 Zn2+1,2 2.20,3.75 6 水杨酸(Salicylic acid) C6H4(OH)COOH Al3+1 14.11 Cd2+1 5.55 Co2+1,2 6.72,11.42 Cr2+1,2 8.4,15.3 Cu2+1,2 10.60,18.45 Fe2+1,2 6.55,11.25 Mn2+1,2 5.90,9.80 Ni2+1,2 6.95,11.75 Th4+1,2,3,4 4.25,7.60,10.05,11.60 TiO2+1 6.09 V2+1 6.3 Zn2+1 6.85 7 磺基水杨酸(5-sulfosalicylic acid) HO3SC6H3(OH)COOH Al3+(0.1mol/L) 1,2,3 13.20,22.83,28.89 Be2+(0.1mol/L) 1,2 11.71,20.81 Cd2+(0.1mol/L) 1,2 16.68,29.08 Co2+(0.1mol/L) 1,2 6.13,9.82 Cr3+(0.1mol/L) 1 9.56 Cu2+(0.1mol/L) 1,2 9.52,16.45 Fe2+(0.1mol/L) 1,2 5.9,9.9 Fe3+(0.1mol/L) 1,2,3 14.64,25.18,32.12 Mn2+(0.1mol/L) 1,2 5.24,8.24 Ni2+(0.1mol/L) 1,2 6.42,10.24 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 10 页，共 15 页Zn2+(0.1mol/L) 1,2 6.05,10.65 8 酒石酸(Tartaric acid) (HOOCCHOH)2Ba2+2 1.62 Bi3+3 8.30 Ca2+1,2 2.98,9.01 Cd2+1 2.8 Co2+1 2.1 Cu2+1,2,3,4 3.2,5.11,4.78,6.51 Fe3+1 7.49 Hg2+1 7.0 Mg2+2 1.36 Mn2+1 2.49 Ni2+1 2.06 Pb2+1,3 3.78,4.7 Sn2+1 5.2 Zn2+1,2 2.68,8.32 9 丁二酸(Butanedioic acid) HOOCCH2CH2COOH Ba2+1 2.08 Be2+1 3.08 Ca2+1 2.0 Cd2+1 2.2 Co2+1 2.22 Cu2+1 3.33 Fe3+1 7.49 Hg2+2 7.28 Mg2+1 1.20 Mn2+1 2.26 Ni2+1 2.36 Pb2+1 2.8 Zn2+1 1.6 10 硫脲(Thiourea) H2NC( S)NH2Ag+1,2 7.4,13.1 Bi3+6 11.9 Cd2+1,2,3,4 0.6,1.6,2.6,4.6 Cu+3,4 13.0,15.4 Hg2+2,3,4 22.1,24.7,26.8 Pb2+1,2,3,4 1.4,3.1,4.7,8.3 11 乙二胺(Ethyoenediamine) Ag+1,2 4.70,7.70 Cd2+(20 ) 1,2,3 5.47,10.09,12.09 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 11 页，共 15 页H2NCH2CH2NH2Co2+1,2,3 5.91,10.64,13.94 Co3+1,2,3 18.7,34.9,48.69 Cr2+1,2 5.15,9.19 Cu+2 10.8 Cu2+1,2,3 10.67,20.0,21.0 Fe2+1,2,3 4.34,7.65,9.70 Hg2+1,2 14.3,23.3 Mg2+1 0.37 Mn2+1,2,3 2.73,4.79,5.67 Ni2+1,2,3 7.52,13.84,18.33 Pd2+2 26.90 V2+1,2 4.6,7.5 Zn2+1,2,3 5.77,10.83,14.11 12 吡啶(Pyridine) C5H5N Ag+1,2 1.97,4.35 Cd2+1,2,3,4 1.40,1.95,2.27,2.50 Co2+1,2 1.14,1.54 Cu2+1,2,3,4 2.59,4.33,5.93,6.54 Fe2+1 0.71 Hg2+1,2,3 5.1,10.0,10.4 Mn2+1,2,3,4 1.92,2.77,3.37,3.50 Zn2+1,2,3,4 1.41,1.11,1.61,1.93 13 甘氨酸(Glycin) H2NCH2COOH Ag+1,2 3.41,6.89 Ba2+1 0.77 Ca2+1 1.38 Cd2+1,2 4.74,8.60 Co2+1,2,3 5.23,9.25,10.76 Cu2+1,2,3 8.60,15.54,16.27 Fe2+(20) 1,2 4.3,7.8 Hg2+1,2 10.3,19.2 Mg2+1,2 3.44,6.46 Mn2+1,2 3.6,6.6 Ni2+1,2,3 6.18,11.14,15.0 Pb2+1,2 5.47,8.92 Pd2+1,2 9.12,17.55 Zn2+1,2 5.52,9.96 14 2-甲基 -8-羟基喹啉Cd2+1,2,3 9.00,9.00,16.60 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 12 页，共 15 页(50% 二噁烷) (8-Hydroxy-2-methyl quinoline) Ce3+1 7.71 Co2+1,2 9.63,18.50 Cu2+1,2 12.48,24.00 Fe2+1,2 8.75,17.10 Mg2+1,2 5.24,9.64 Mn2+1,2 7.44,13.99 Ni2+1,2 9.41,17.76 Pb2+1,2 10.30,18.50 UO22+1,2 9.4,17.0 Zn2+1,2 9.82,18.72 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 13 页，共 15 页EDTA 的 lgY(H)值lgY(H) Values of EDTApH lgY(H)pH lgY(H)pH lgY(H)pH lgY(H)pH lgY(H)0.0 23.64 2.5 11.90 5.0 6.45 7.5 2.78 10.0 0.45 0.1 23.06 2.6 11.62 5.1 6.26 7.6 2.68 10.1 0.39 0.2 22.47 2.7 11.35 5.2 6.07 7.7 2.57 10.2 0.33 0.3 21.89 2.8 11.09 5.3 5.88 7.8 2.47 10.3 0.28 0.4 21.32 2.9 10.84 5.4 5.69 7.9 2.37 10.4 0.24 0.5 20.75 3.0 10.60 5.5 5.51 8.0 2.27 10.5 0.20 0.6 20.18 3.1 10.37 5.6 5.33 8.1 2.17 10.6 0.16 0.7 19.62 3.2 10.14 5.7 5.15 8.2 2.07 10.7 0.13 0.8 19.08 3.3 9.92 5.8 4.98 8.3 1.97 10.8 0.11 0.9 18.54 3.4 9.70 5.9 4.81 8.4 1.87 10.9 0.09 1.0 18.01 3.5 9.48 6.0 4.65 8.5 1.77 11.0 0.07 1.1 17.49 3.6 9.27 6.1 4.49 8.6 1.67 11.1 0.06 1.2 16.98 3.7 9.06 6.2 4.34 8.7 1.57 11.2 0.05 1.3 16.49 3.8 8.85 6.3 4.20 8.8 1.48 11.3 0.04 1.4 16.02 3.9 8.65 6.4 4.06 8.9 1.38 11.4 0.03 1.5 15.55 4.0 8.44 6.5 3.92 9.0 1.28 11.5 0.02 1.6 15.11 4.1 8.24 6.6 3.79 9.1 1.19 11.6 0.02 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 14 页，共 15 页1.7 14.68 4.2 8.04 6.7 3.67 9.2 1.10 11.7 0.02 1.8 14.27 4.3 7.84 6.8 3.55 9.3 1.01 11.8 0.01 1.9 13.88 4.4 7.64 6.9 3.43 9.4 0.92 11.9 0.01 2.0 13.51 4.5 7.44 7.0 3.32 9.5 0.83 12.0 0.01 2.1 13.16 4.6 7.24 7.1 3.21 9.6 0.75 12.1 0.01 2.2 12.82 4.7 7.04 7.2 3.10 9.7 0.67 12.2 0.005 2.3 12.50 4.8 6.84 7.3 2.99 9.8 0.59 13.0 0.0008 2.4 12.19 4.9 6.65 7.4 2.88 9.9 0.52 13.9 0.0001 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 15 页，共 15 页