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1、配合物稳定常数配合物稳定常数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。金属金属-无机配位体配合物的稳定常数无机配位体配合物的稳定常数 Stability Constants of Metal Ion-Inorganic Coordination Compound
2、s 序号序号 (No.) 配位体配位体 (Ligand) 金属离子金属离子 (Metal ion) 配位体数目配位体数目 n (Number of ligand) lgn Ag+ 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,
3、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 1 NH3 Zn2+ 1,2,3,4 2.37,4.81,7.31,9.46 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
4、,2,3,4 1.75,2.34,3.32,3.70, Ce3+ 1 0.42 Cu+ 2 5.89 Cu2+ 1 0.30 2 Br- Hg2+ 1,2,3,4 9.05,17.32,19.74,21.00 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
5、.6,21.2,23.9,29.2,31.6 U4+ 1 0.18 Y3+ 1 1.32 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 Pd
6、2+ 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 3 Cl- Zr4+ 1,2,3,4 0.9,1.3,1.5,1.2 Ag+ 2,3,4 21.1,21.7,20.6 Au+ 2 38.3 Cd2+ 1,2,3,4 5.48,1
7、0.60,15.23,18.78 Cu+ 2,3,4 24.0,28.59,30.30 4 CN- Fe2+ 6 35.0 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 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+10.8Fe3+1,2,3,5
8、5.28,9.30,12.06,15.77Ga3+1,2,34.49,8.00,10.50Hf4+1,2,3,4,5,69.0,16.5,23.1,28.8,34.0,38.0Hg2+11.03In3+1,2,3,43.70,6.40,8.60,9.80Mg2+11.30Mn2+15.48Ni2+10.50Pb2+1,21.44,2.54Sb3+1,2,3,43.0,5.7,8.3,10.9Sn2+1,2,34.08,6.68,9.50Th4+1,2,3,48.44,15.08,19.80,23.20TiO2+1,2,3,45.4,9.8,13.7,18.0Zn2+10.785 F- Zr4+
9、1,2,3,4,5,69.4,17.2,23.7,29.5,33.5,38.3Ag+1,2,36.58,11.74,13.68Bi3+1,4,5,63.63,14.95,16.80,18.80Cd2+1,2,3,42.10,3.43,4.49,5.41Cu+28.85Fe3+11.88Hg2+1,2,3,412.87,23.82,27.60,29.836I-Pb2+1,2,3,42.00,3.15,3.92,4.47Pd2+424.5Tl+1,2,30.72,0.90,1.08Tl3+1,2,3,411.41,20.88,27.60,31.82Ag+1,22.0,3.99Al3+1,49.27
10、,33.03As3+1,2,3,414.33,18.73,20.60,21.20Be2+1,2,39.7,14.0,15.2Bi3+1,2,412.7,15.8,35.2Ca2+11.3Cd2+1,2,3,44.17,8.33,9.02,8.62Ce3+14.6Ce4+1,213.28,26.46Co2+1,2,3,44.3,8.4,9.7,10.2Cr3+1,2,410.1,17.8,29.9Cu2+1,2,3,47.0,13.68,17.00,18.5Fe2+1,2,3,45.56,9.77,9.67,8.58Fe3+1,2,311.87,21.17,29.67Hg2+1,2,310.6,
11、21.8,20.9In3+1,2,3,410.0,20.2,29.6,38.9Mg2+12.58Mn2+1,33.9,8.3Ni2+1,2,34.97,8.55,11.33Pa4+1,2,3,414.04,27.84,40.7,51.4Pb2+1,2,37.82,10.85,14.58Pd2+1,213.0,25.8Sb3+2,3,424.3,36.7,38.3Sc3+18.9Sn2+110.4Th3+1,212.86,25.37Ti3+112.71Zn2+1,2,3,44.40,11.30,14.14,17.667OH-Zr4+1,2,3,414.3,28.3,41.9,55.38NO3-B
12、a2+10.92Bi3+11.26Ca2+10.28Cd2+10.40Fe3+11.0Hg2+10.35Pb2+11.18Tl+10.33Tl3+10.92Ba2+14.6Ca2+14.6Cd3+15.6Co2+16.1Cu2+1,26.7,9.0Hg2+212.38Mg2+15.7Ni2+1,25.8,7.4Pb2+1,27.3,10.159P2O74-Zn2+1,28.7,11.0Ag+1,2,3,44.6,7.57,9.08,10.08Bi3+1,2,3,4,5,61.67,3.00,4.00,4.80,5.50,6.10Cd2+1,2,3,41.39,1.98,2.58,3.6Cr3+
13、1,21.87,2.98Cu+1,212.11,5.18Cu2+1,21.90,3.00Fe3+1,2,3,4,5,62.21,3.64,5.00,6.30,6.20,6.10Hg2+1,2,3,49.08,16.86,19.70,21.70Ni2+1,2,31.18,1.64,1.81Pb2+1,2,30.78,0.99,1.00Sn2+1,2,31.17,1.77,1.74Th4+1,21.08,1.7810SCN-Zn2+1,2,3,41.33,1.91,2.00,1.60Ag+1,28.82,13.4611S2O32-Cd2+1,23.92,6.44Cu+1,2,310.27,12.2
14、2,13.84Fe3+12.10Hg2+2,3,429.44,31.90,33.24Pb2+2,35.13,6.35Ag+11.3Ba2+12.7Bi3+1,2,3,4,51.98,3.41,4.08,4.34,4.60Fe3+1,24.04,5.38Hg2+1,21.34,2.40In3+1,2,31.78,1.88,2.36Ni2+12.4Pb2+12.75Pr3+1,23.62,4.92Th4+1,23.32,5.5012SO42-Zr4+1,2,33.79,6.64,7.77金属金属- -有机配位体配合物的稳定常数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。 ）S
15、tability Constants of Metal Ion-Organic Coordination Compounds 序号序号(No.)配位体配位体(Ligand)金属离子金属离子 (Metal ion)配位体配位体 数目数目 n (Number of ligand) lgnAg+17.32Al3+116.11Ba2+17.78Be2+19.3Bi3+122.8Ca2+111.0Cd2+116.4Co2+116.31Co3+136.0Cr3+123.0Cu2+118.7Fe2+114.83Fe3+124.23Ga3+120.25Hg2+121.80In3+124.95Li+12.79M
16、g2+18.64Mn2+113.8Mo(V)16.36Na+11.66Ni2+118.56Pb2+118.3Pd2+118.5Sc2+123.1Sn2+122.11乙二胺四乙酸乙二胺四乙酸 (EDTA) (HOOCCH2)2NCH22Sr2+18.80Th4+123.2TiO2+117.3Tl3+122.5U4+117.50VO2+118.0Y3+118.32Zn2+116.4Zr4+119.4Ag+ 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 Tl
