Related Experiment Video
Updated: Jun 1, 2026

Synthesis of Triazole and Tetrazole-Functionalized Zr-Based Metal-Organic Frameworks Through Post-Synthetic Ligand Exchange
Published on: June 23, 2023
Tetra-aqua-(5,5'-dimethyl-2,2'-bipyridine-κN,N')zinc(II) sulfate
Abstract:
The asymmetric unit of the title compound, [Zn(C(12)H(12)N(2))(H(2)O)(4)]SO(4), consists of a Zn(II) complex cation, a sulfate anion and four mol-ecules of water coordinated to the Zn(II) atom. The Zn(II) complex cation, with approximate twofold symmetry, displays a slightly distorted octa-hedral geometry around the Zn(II) atom, which is coordinated by two N atoms from a 5,5'-dimethyl-2,2'-bipyridine ligand and by the O atoms of four water mol-ecules. In the crystal, O-H⋯O hydrogen bonds help to establish the packing.
Related Concept Videos
Coordination Number and Geometry
Crystal Field Theory - Tetrahedral and Square Planar Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
EDTA: Auxiliary Complexing Reagents
EDTA: Chemistry and Properties
Valence Bond Theory
Ionic Crystal Structures
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...

