Related Experiment Video
Updated: Jun 28, 2026

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition
Published on: February 5, 2022
A one-dimensional chain structure based on unusual tetranuclear manganese(II) clusters
Guang Bo Che1, Jian Wang, Chun Bo Liu
1College of Chemistry, Jilin Normal University, Siping 136000, People's Republic of China. guangbochejl@yahoo.com
This study reports a novel one-dimensional manganese(II) coordination polymer chain structure. It is the first example of a chain structure built from tetranuclear manganese clusters, offering new insights into coordination chemistry.
Area of Science:
- Materials Science
- Inorganic Chemistry
- Crystallography
Background:
- Coordination polymers offer diverse structural motifs and properties.
- Manganese(II) complexes are of interest due to their catalytic and magnetic potential.
Purpose of the Study:
- To synthesize and characterize a novel manganese(II) coordination polymer.
- To investigate the structural features of the resulting material, particularly the formation of clusters and chains.
Main Methods:
- Hydrothermal synthesis of the coordination polymer.
- Single-crystal X-ray diffraction for structural determination.
- Analysis of coordination geometry and bonding interactions.
Main Results:
- A novel coordination polymer, poly[bis(mu(4)-biphenyl-2,2'-dicarboxylato)(dipyrido[3,2-a:2',3'-c]phenazine)manganese(II)], was successfully synthesized.
- The structure features two unique Mn(II) ions with distorted octahedral and trigonal bipyramidal coordination geometries.
- Four Mn(II) ions are bridged by carboxylate ligands to form a tetranuclear cluster, which extends into a one-dimensional chain.
Conclusions:
- The synthesized compound represents the first reported chain structure based on a tetranuclear Mn(II) cluster.
- The study highlights the versatility of biphenyl-2,2'-dicarboxylic acid and dipyrido[3,2-a:2',3'-c]phenazine ligands in constructing complex coordination architectures.
More Related Videos
Related Concept Videos
Valence Bond Theory
Coordination Number and Geometry
Structural Isomerism
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...
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...
Metal-Ligand Bonds
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
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,...

