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Related Concept Videos

Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
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...
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
Stereoisomerism02:52

Stereoisomerism

Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
Molecules with Multiple Chiral Centers02:25

Molecules with Multiple Chiral Centers

Molecules that possess multiple chiral centers can afford a large number of stereoisomers. For instance, while some molecules like 2-butanol have one chiral center, defined as a tetrahedral carbon atom with four different substituents attached, several molecules like butane-2,3-diol have multiple chiral centers. A simple formula to predict the number of stereoisomers possible for a molecule with n chiral centers is 2n. However, there can be a lower number where some of the stereoisomers are...

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Related Experiment Video

Updated: Jul 8, 2026

Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks (MOFs)
08:25

Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks (MOFs)

Published on: January 17, 2020

Multiferroic homochiral metal-organic framework.

Qiong Ye1, Da-Wei Fu, Hang Tian

  • 1Ordered Matter Science Research Center, Southeast University, Nanjing 210096, People's Republic of China. yeqiong@seu.edu.cn

Inorganic Chemistry
|January 5, 2008
PubMed
Summary

This study introduces a novel metal-organic framework, (Lig)2Tb(H2O)2(ClO4) (1), exhibiting both ferroelectric and magnetic properties. This discovery marks a significant advancement in the field of multiferroic materials.

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Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
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Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers

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Last Updated: Jul 8, 2026

Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks (MOFs)
08:25

Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks (MOFs)

Published on: January 17, 2020

Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
07:14

Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers

Published on: May 12, 2023

Area of Science:

  • Materials Science
  • Solid State Chemistry
  • Crystallography

Background:

  • Metal-organic frameworks (MOFs) are crystalline materials with diverse applications.
  • Multiferroic materials exhibit multiple ferroic orders, such as ferroelectricity and magnetism.
  • Investigating novel MOFs for multifunctional properties is an active area of research.

Purpose of the Study:

  • To synthesize and characterize a new terbium-based metal-organic framework.
  • To investigate the ferroelectric and magnetic properties of the synthesized material.
  • To explore the potential of MOFs as multiferroic materials.

Main Methods:

  • Hydrothermal synthesis of terbium-based MOF using (L)-ethyl lactate and Tb(ClO4)3·6H2O.
  • Single-crystal X-ray diffraction for structural determination.
  • Ferroelectric and magnetic property measurements.

Main Results:

  • A novel laminar 2D framework, (Lig)2Tb(H2O)2(ClO4) (1), was successfully synthesized.
  • Material 1 exhibits both ferroelectric and magnetic properties, suggesting it is a multiferroic material.
  • An analogue, (Lig)2Tb(D2O)2(ClO4) (2), confirmed ferroelectricity and the deuterium effect.

Conclusions:

  • The synthesized MOF (1) represents a potential new class of multiferroic materials.
  • The observed ferroelectricity and magnetic ordering open avenues for advanced material applications.
  • The study highlights the importance of structural design in achieving multifunctional MOFs.