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Related Concept Videos

Coordination Number and Geometry02:57

Coordination Number and Geometry

For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
Valence Bond Theory02:42

Valence Bond Theory

Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
Coordination Compounds and Nomenclature02:54

Coordination Compounds and Nomenclature

In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
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...
Structural Isomerism02:34

Structural Isomerism

Isomerism in Complexes
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...
Colors and Magnetism03:02

Colors and Magnetism

Color in Coordination Complexes
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.

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Correction: Dodecanuclear [NiII8Ln<sub>4</sub>] clusters and rings of corner-sharing {NiII2Ln<sub>2</sub>} cubanes (Ln = Dy, Gd, Y); magnetic and magnetothermal properties.

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Updated: May 15, 2026

Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules
08:40

Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules

Published on: April 28, 2014

A 1-D coordination polymer based on a Mn40 octagonal super-structure.

Maria Manoli1, Ross Inglis, Manolis J Manos

  • 1Department of Chemistry, University of Cyprus, 1678 Nicosia, Cyprus.

Chemical Communications (Cambridge, England)
|January 4, 2013
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel 1-D coordination polymer using diols and phenolic oximes. This structure features unique manganese-based subunits, including a [Mn(9)] unit, a [Mn(40)] super-structure, and a [Mn(21)] repeating unit.

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Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework

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Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules
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Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
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Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates

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Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework
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Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework

Published on: April 9, 2018

Area of Science:

  • Materials Science
  • Inorganic Chemistry
  • Coordination Chemistry

Background:

  • Coordination polymers are advanced materials with diverse applications.
  • Manganese-based coordination polymers are of particular interest due to their unique magnetic and catalytic properties.
  • The construction of complex, multi-component structures within coordination polymers remains a synthetic challenge.

Purpose of the Study:

  • To synthesize and characterize a novel 1-D coordination polymer.
  • To investigate the structural features of the synthesized manganese-containing coordination polymer.
  • To explore the potential of diols and phenolic oximes as building blocks for complex coordination structures.

Main Methods:

  • Solvothermal synthesis was employed to construct the 1-D coordination polymer.
  • Single-crystal X-ray diffraction was used for detailed structural analysis.
  • Elemental analysis and spectroscopic techniques confirmed the composition and structure.

Main Results:

  • A novel 1-D coordination polymer was successfully synthesized.
  • The structure contains a unique [Mn(9)] sub-unit.
  • A nanosized [Mn(40)] octagonal super-structure and a [Mn(21)] repeating unit were identified within the polymer framework.

Conclusions:

  • The study demonstrates the successful construction of a complex 1-D coordination polymer with novel manganese subunits.
  • The combination of diols and phenolic oximes provides an effective strategy for building intricate coordination architectures.
  • The identified [Mn(9)], [Mn(40)], and [Mn(21)] units offer new possibilities for designing functional manganese-based materials.