本研究合成了含參（2-胺基乙基）胺之二價鐵錯合物，〔Fe(tren)L)(BF4)2其中tren為參（2-胺基乙基）胺；L為中性含氮雙牙配子，包括乙二胺(en)、1, 10-二氮雜菲（ophen）、2-甲胺基啶(2ampy)等以及〔Fe(2-ampy)3CI2]. EtOH, Fe(py)4CI2及Fe(py)4(SCN)2，利用元素分析、紅外光譜、近紅外光譜、紫外光一可見光光譜、梅思堡光譜及循環伏安分析等方法，來判定錯合物之結構及鍵結性質。
由梅思堡光譜結果推論，六配位錯合物為二價鐵高自旋扭曲八面體結構。含2-甲胺基啶錯合物之電化學測量圖譜，說明該錯合物在溶液狀態的鍵結性質。
二價鐵和配子之間的鍵結性質可用近紅外光譜的高斯交疊解析來說明，由交疊解析結果，可將二價鐵d-軌域最低能階定在dxy。這與已知的壓縮八面體形之FeN6錯合物如〔Fe(2-ampy)3]CI2.EtOH及Fe(py)4(NCS)2所得結果相符合。

Mixed ligand tris (2-aminoethyl) amineiron (II) tetrafluoroborate complexes of the type [Fe(tren)L] (BF4)2, where tren stands for tris (2-aminoethyl) amine and L for bidentate ligands including ethylenediamine, 1, 10-phenanthroline, and 2-aminomethylpyridine, as well as [Fe (2-ampy)3]CI2.EtOH, Fe(py)4CI2 and Fe(py)4(SCN)2, have been prepared and characterized by element analysis, ir, UV-Vis, nir, and Mossbauer spectroscopic studies, and cyclic voltammetric method.
The distorted octahedral complexes contain six coordinated high spin iron (II) ions as evident from the Mossbauer spectral data. The bonding properties of the bidentate ligands (2-ampy) are elucidated by electrochemical measurement in solution.
The solid state LF spectra of these complexes were deconvoluted into Gaussian component bands, and the results were employed to interpret the bonding properties of Fe (II)-N chromophores, suggesting the dxy as the lowest energy level for these complexes. This is in agreement with the results suggested for the compressed octahedral FeN6 complexes, such as [Fe(2-ampy)3]CI2. EtOH and Fe(py)4(NCS)2.