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Updated: Jun 1, 2026
16:11
Thermochemical Studies of Ni(II) and Zn(II) Ternary Complexes Using Ion Mobility-Mass Spectrometry
Published on: June 8, 2022
Dimeth-yl(2,2':6',2''-terpyridine-κN,N',N'')zinc(II)
Tamila Shalumova1, Joseph M Tanski
1Department of Chemistry, Vassar College, Poughkeepsie, NY 12604, USA.
Summary
Dimethyl-zinc was added to 2,2′:6′,2″-terpyridine to synthesize a novel zinc(II) compound. This compound features a distorted trigonal-bipyramidal geometry around the central zinc atom.
Area of Science:
- Organometallic Chemistry
- Coordination Chemistry
- Crystallography
Background:
- 2,2′:6′,2″-terpyridine is a versatile chelating ligand in coordination chemistry.
- Zinc(II) complexes with nitrogen-containing ligands are of interest due to their diverse applications.
Purpose of the Study:
- To synthesize and characterize a new organometallic compound involving zinc(II) and 2,2′:6′,2″-terpyridine.
- To investigate the coordination geometry and structural properties of the synthesized complex.
Main Methods:
- Synthesis via the addition of dimethyl-zinc to 2,2′:6′,2″-terpyridine.
- Crystallization through slow evaporation of tetrahydrofuran (THF).
- Structural analysis using X-ray crystallography.
Main Results:
- The title compound, [Zn(CH3)2(C15H11N3)], was successfully synthesized and crystallized.
- The central zinc(II) atom exhibits a penta-coordinate, distorted trigonal-bipyramidal geometry.
- The geometry is defined by two axial nitrogen atoms and three equatorial atoms (one central nitrogen and two methyl carbons).
Conclusions:
- The reaction of dimethyl-zinc with 2,2′:6′,2″-terpyridine yields a unique penta-coordinate zinc(II) complex.
- The structural characterization reveals a specific distorted trigonal-bipyramidal coordination environment.
- This study contributes to understanding the coordination behavior of terpyridine ligands with organozinc reagents.
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