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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