Related Experiment Video
Updated: Jun 2, 2026

Synthesis of Triazole and Tetrazole-Functionalized Zr-Based Metal-Organic Frameworks Through Post-Synthetic Ligand Exchange
Published on: June 23, 2023
Hexaaqua-magnesium dibromide 5-(pyridinium-3-yl)tetra-zol-1-ide
1Ordered Matter Science Research Center, College of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, People's Republic of China.
Abstract:
In the title compound, [Mg(H(2)O)(6)]Br(2)·2C(6)H(5)N(5), the Mg(II) atom, lying on an inversion center, is coordinated by six water mol-ecules in a distorted octa-hedral geometry. The pyridine and tetra-zole rings in the 5-(pyridinium-3-yl)tetra-zol-1-ide zwitterion are nearly coplanar, twisted from each other by a dihedral angle of 5.70 (1)°. The zwitterions, Br anions and complex cations are connected by O-H⋯Br, O-H⋯N and N-H⋯Br hydrogen bonds, leading to the formation of a three-dimensional network.
Related Concept Videos
Qualitative Analysis
For instance, group IV...
Diazonium Group Substitution: –OH and –H
VSEPR Theory and the Effect of Lone Pairs
Valence Bond Theory
EDTA: Chemistry and Properties
Colors and Magnetism
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.

