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Updated: Jan 20, 2026

Sulfate Separation by Selective Crystallization with a Bis-iminoguanidinium Ligand
Published on: September 8, 2016
Bis{2-[bis-(2-hy-droxy-eth-yl)amino]-acetato}-zinc(II) monohydrate
Erik Rakovský1, Lenin Thulluvan Valappil1, Yogeswara Rao Pateda1
1Comenius University in Bratislava, Faculty of Natural Sciences, Department of Inorganic Chemistry, Ilkovičova 6, 84215 Bratislava, Slovak Republic.
Abstract:
The title compound, [Zn(C6H12NO4)2]·H2O, crystallizes in the monoclinic space group P21/c with one formula unit per asymmetric unit. The ZnII atom is coordinated by a tertiary amine N atom, a carboxyl-ate O atom and a hy-droxy O atom from each of two bicine ligands, forming a distorted octa-hedral coordination environment. Inter-molecular inter-actions consist of O-H⋯O and weak C-H⋯O hydrogen bonds forming a three-dimensional supra-molecular network.
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meta-Directing Deactivators: –NO2, –CN, –CHO, –⁠CO2R, –COR, –CO2H