Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Valence Bond Theory

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...

Formation of Complex Ions

Formation of Complex Ions

A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...

Ferromagnetism

Ferromagnetism

Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...

Colors and Magnetism

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.

Crystal Field Theory - Tetrahedral and Square Planar Complexes

Crystal Field Theory - Tetrahedral and Square Planar Complexes

Tetrahedral 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,...

Crystal Field Theory - Octahedral Complexes

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...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

A new amide alkaloid from the coculture liquid cultures of two grape endophytic fungi <i>Penicillium</i> sp. YPT103-2 and <i>Penicillium</i> sp. YPT104.

Natural product research·2026

Same author

An Underwater Self-Healing Polysulfide Elastomer with In-Situ Curing and Adhesion.

Polymer science & technology (Washington, D.C.)·2026

Same author

Retraction: Planar chiral orange-red TADF materials with AIE properties for efficient circularly polarized OLEDs.

Chemical communications (Cambridge, England)·2026

Same author

Strain resilient and self-healing nanocomposite conductors with ultralow sheet resistance.

Nature communications·2026

Same author

Thinner-than-paper and broad-temperature-adaptive zinc-iodine batteries enabled by nanophase separated deep-eutectic hydrogel electrolytes.

Nature communications·2026

Same author

A Cationic Eu-Based Metal-Organic Framework and Its Mixed Matrix Membranes for Sensitive Detection of Nitroaromatic Explosives.

Inorganic chemistry·2026

Same journal

Design and Synthesis of Coumarin-Functionalized Zn(II) Phthalocyanine: DFT Analysis, Photophysical, and Photodiode Properties.

Inorganic chemistry·2026

Same journal

Structure-Directed Two-Dimensional {Eu<sub>2</sub>} Metal-Organic Framework with Cooperative Acid-Base Microenvironments for Dual Catalysis and DFT Calculations.

Inorganic chemistry·2026

Same journal

K<sub>3</sub>Yb<sub>2</sub>(BO<sub>3</sub>)<sub>3</sub> and Rb<sub>3</sub>Yb<sub>2</sub>(BO<sub>3</sub>)<sub>3</sub>: Two Rare-Earth Borate Ultraviolet Nonlinear Optical Crystals.

Inorganic chemistry·2026

Same journal

Solid-State and Aqueous Ion-Exchange Reactions of Layered KInSnS<sub>4</sub> and NaInSnS<sub>4</sub> Compounds and Ionic Conductivities of AInSnS<sub>4</sub> (A = Li, Na, K, Rb, Cs, Tl) Compounds at Room Temperature.

Inorganic chemistry·2026

Same journal

Connectivity-Driven Electronic Structure and Charge Separation in Morpholinium-Based Bi<sup>3+</sup>/Sb<sup>3+</sup> Halides.

Inorganic chemistry·2026

Same journal

Incorporating Mono- and Trivalent Thallium Cations into Trivalent Lanthanide Squarate and Squarate-Oxalate Complexes.

Inorganic chemistry·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 17, 2026

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

Published on: June 21, 2017

Ionic ferroelectrics based on nickel schiff base complexes.

Yan Sui¹, Dong-Ping Li, Cheng-Hui Li

¹State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, People's Republic of China. ysui@163.com

Inorganic Chemistry

|January 16, 2010

Summary

This summary is machine-generated.

Two novel homochiral enantiomers were synthesized, creating a new class of ionic ferroelectrics. These metal-organic coordination compounds exhibit higher polarization than KH(2)PO(4).

More Related Videos

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition

Published on: February 5, 2022

Effect of Microwave Synthesis Conditions on the Structure of Nickel Hydroxide Nanosheets

Effect of Microwave Synthesis Conditions on the Structure of Nickel Hydroxide Nanosheets

Published on: August 18, 2023

Related Experiment Videos

Last Updated: Jun 17, 2026

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

Published on: June 21, 2017

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition

Published on: February 5, 2022

Effect of Microwave Synthesis Conditions on the Structure of Nickel Hydroxide Nanosheets

Effect of Microwave Synthesis Conditions on the Structure of Nickel Hydroxide Nanosheets

Published on: August 18, 2023

Area of Science:

Coordination Chemistry
Materials Science
Solid-State Physics

Background:

Homochiral enantiomers are crucial for developing materials with specific chiral properties.
Ionic ferroelectrics are essential for advanced electronic applications.
Metal-organic coordination compounds offer tunable properties for novel material design.

Purpose of the Study:

To synthesize and structurally characterize novel homochiral enantiomers.
To investigate the ferroelectric properties of these new compounds.
To explore their potential as advanced ionic ferroelectrics.

Main Methods:

Synthesis of trinuclear ionic clusters using specific ligands (H(2)L(1) and H(2)L(2)).
Structural characterization via X-ray crystallography to confirm C(2) symmetry and space group P2(1).
Ferroelectric measurements to determine polarization values.

Main Results:

Successful synthesis and characterization of two novel homochiral enantiomers: [(NiL(1))(2)Na](+)NCS(-).MeOH.Et(2)O (1) and [(NiL(2))(2)Na](+)NCS(-).MeOH.Et(2)O (2).
Both complexes exhibit C(2) symmetry and crystallize in the P2(1) space group.
Ferroelectric measurements demonstrated a polarization value higher than that of KH(2)PO(4).

Conclusions:

Complexes 1 and 2 represent a new class of ionic ferroelectrics.
These metal-organic coordination compounds show promise for applications requiring high polarization.
The study highlights the potential of homochiral enantiomers in designing advanced ferroelectric materials.