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合成了铅(II)与乙二胺四乙酸(EDTA),N-羟乙基乙二胺三乙酸(HEDTA)和 (乙酸-N-羟乙基酯)乙二胺三乙酸(AHEDTA, A = 乙酸-N-羟乙基酯)的配合物,C10H20K2N2O12Pb (K2[Pb(EDTA)]4H2O), C10H22K2N2O11Pb (K2[Pb(HEDTA)]4H2O)和C12H23KN2O11Pb (K[Pb- (AHEDTA)]3H2O), 并测定了K2[Pb(EDTA)]4H2O晶体结构和分子结构。具体测定结果如下:单斜晶系,C2/c空间群,a = 24.59(2),b = 11.79(1),c = 14.08(2) 牛琤 = 108.15(2),V = 3876.0(7)) 3,Z = 8,Mr = 654.65,Dc = 2.213 g/cm3,m = 9.196 mm-1和F(000) = 2480。最终偏差因子分别为R = 0.0458,wR = 0.0640 (对3372 (I > 2.0s(I))可观测衍射点)。在K2[Pb(EDTA)]4H2O中,配合物离子[Pb(EDTA)]2-具有六配位的非标准三棱柱体结构,EDTA作为六齿配体提供4个O原子和2个N原子与中心金属离子Pb2+形成配键。
Lead (II) and ethylenediaminetetraacetic acid (EDTA), N-hydroxyethylethylenediaminetriacetic acid (HEDTA) and ethylenediaminetriacetic acid (AHEDTA, A = (K2 [Pb (EDTA)] 4H2O), C10H22K2N2O11Pb (K2 [Pb (HEDTA)] 4H2O) and C12H23KN2O11Pb (K [Pb- (AHEDTA)] 3H2O) The crystal structure and molecular structure of K2 [Pb (EDTA)] 4H2O were also determined. The specific results are as follows: monoclinic space group C2 / c, a = 24.59 (2), b = 11.79 (1), c = 14.08 ) 3, Z = 8, Mr = 654.65, Dc = 2.213 g / cm3, m = 9.196 mm-1 and F (000) = 2480. The final deviation factors were R = 0.0458 and wR = 0.0640 (for 3372 (I> 2.0s (I)) observable diffraction points). In K2 [Pb (EDTA)] 4H2O, the complex ion [Pb (EDTA)] 2- has a hexacoordinated non-standard triangular prism structure. EDTA provides six O atoms and two N atoms With the central metal ion Pb2 + form a key.