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Updated: Jun 1, 2026

Thermochemical Studies of Ni(II) and Zn(II) Ternary Complexes Using Ion Mobility-Mass Spectrometry
Published on: June 8, 2022
Hexaaqua-cobalt(II) bis-{[N-(4-meth-oxy-2-oxidobenzyl-idene)glycylglycinato]nickel(II)} hexa-hydrate
Jiaxun Jiang1, Yao Lu, Limin Yuan
1College of Chemistry and Chemical Engineering, Yangzhou Universitry, Yangzhou 225002, People's Republic of China.
Abstract:
In the title compound, [Co(H(2)O)(6)][Ni(C(12)H(11)N(2)O(5))](2)·6H(2)O, the Ni(II) atom has a nearly square-planar coordination with two N and two O atoms of the N-(4-meth-oxy-2-oxidobenzyl-idene)glycylglycinate Schiff base ligand (L(3-)). The Co(II) atom sits on an inversion center and is coordinated to six aqua ligands in a slightly distorted octa-hedral geometry. The [Co(H(2)O)(6)](2+) cations and [NiL](-) anions form columns along the a axis by O-H⋯O hydrogen bonds. Additional hydrogen bonds between the uncoordinated and coordinated water molecules help to consolidate the crystal packing.
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When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.

