The binding modes of 2-((2-aminoethyl)amino)ethanol-based ligands were explored using the Cambridge Structural Database (CSD). To extend this field, a new cadmium complex containing 2-((2-aminoethyl)amino)ethanol (AEAE), [Cd(AEAE)2][Cd(AEAE)2]′[CdI4]2 (1), was prepared and characterized by spectroscopic methods and single-crystal X-ray diffraction. The reaction of AEAE with a 1:1 mixture of CdI2 and HgI2 was also investigated. The complex, [Cd(AEAE)2][I2Hg(μ-I2)2HgI2] (2), was synthesized and

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... aracterized. Compounds 1 and 2 represent the first tridentate binding modes of an AEAE type ligand with Cd2+. Geometrical investigation for complexes containing Cd(Namine2Oalcohol)2, CdIn, and HgIn environment were carried out using the CSD software. Also different possible diastereomers which can be formed in coordination of a pair of tridentate AEAE ligands in octahedral geometry were studied and discussed.