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Updated: Sep 27, 2026

Thermochemical Studies of Ni(II) and Zn(II) Ternary Complexes Using Ion Mobility-Mass Spectrometry
Published on: June 8, 2022
A zinc-lithium complex of 4,7-bis(2-aminoethyl)-1,4,7-triazacyclononane-1-acetate
Alexander J Blake1, Lorenzo Tei, Claire Wilson
1School of Chemistry, The University of Nottingham, University Park, Nottingham NG7 2RD, England. a.j.blake@nottingham.ac.uk
Abstract:
The asymmetric unit of ([4,7-bis(2-aminoethyl)-1,4,7-triazacyclononan-1-yl]acetato)zinc(II) triaqua(mu-[4,7-bis(2-aminoethyl)-1,4,7-triazacyclononan-1-yl]acetato)lithium(I)zinc(II) chloride diperchlorate, [Zn(C(12)H(26)N(5)O(2))][LiZn(C(12)H(26)N(5)O(2))(H(2)O)(3)]Cl(ClO(4))(2), obtained from the reaction between the lithium salt of 4,7-bis(2-aminoethyl)-1,4,7-triazacyclononane-1-acetate and Zn(ClO(4))(2), contains two Zn(II) complexes in which each Zn(II) ion is six-coordinated by five N-atom donors and one O-atom donor from the ligand. One carboxylate O-atom donor is not involved in coordination to a Zn(II) atom, but coordinates to an Li+ ion, the tetrahedral geometry of Li+ being completed by three water molecules. The two complexes are linked via a hydrogen bond between a primary amine N-H group and the carboxylate-O atom not involved in coordination to a metal.
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