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本文报导了Na4〔HgⅡ(nta)2〕·7H2O(nta3-=氨基三乙酸根)配合物的合成并测定了它的分子结构和晶体结构.具体结果如下:单斜晶系,Cc空间群,a=17.980(4),b=8.929(2),c=15.754(2),β=92.78(3)°,V=2526.2(9)3,单位晶胞中的分子数为4,Dc=2.107g·cm-3,μ=6.250mm-1,F(000)=1528,对于2450个独立的衍射点,它的R和Rw值分别为0.0487和0.1434.从最终分析结果来看,〔HgⅡ(nta)2〕4-是一个八配位的变形立方体结构.由此可知具有对称电子结构(d10)的HgⅡ由于有着较大的离子半径,即使与易形成低配位数配合物的配体nta3-,也仍然形成了1∶2这样高配位数的配合物
This paper reports the synthesis of Na4 [HgII (nta) 2] · 7H2O (nta3- = aminotriacetate) complex and its molecular structure and crystal structure. The specific results are as follows: monoclinic system space group Cc, a = 17.980 (4) , b = 8.929 (2) , c = 15.754 ) °, V = 2526.2 (9) 3, the number of molecules per unit cell is 4, Dc = 2.107 g · cm -3, μ = 6.250 mm -1, F 2450 independent diffraction points, its R and Rw values were 0.0487 and 0.1434. From the final analysis, [HgII (nta) 2] 4- is an eight-coordinated deformed cubic structure. This shows that HgII with a symmetrical electron structure (d10), due to its large ionic radius, still forms a high coordination number of 1: 2 even with the ligand nta3-, which easily forms a low coordination number complex Things