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Related Concept Videos

Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

1.6K
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.
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Types Of Superconductors01:28

Types Of Superconductors

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A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
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Superconductor01:24

Superconductor

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A substance that reaches superconductivity, a state in which magnetic fields cannot penetrate, and there is no electrical resistance, is referred to as a superconductor. In 1911, Heike Kamerlingh Onnes of Leiden University, a Dutch physicist, observed a relation between the temperature and the resistance of the element mercury. The mercury sample was then cooled in liquid helium to study the linear dependence of resistance on temperature. It was observed that, as the temperature decreased, the...
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Theory of Metallic Conduction01:17

Theory of Metallic Conduction

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The conduction of free electrons inside a conductor is best described by quantum mechanics. However, a classical model makes predictions close to the results of quantum mechanics. It is called the theory of metallic conduction.
In this theory, Newton's second law of motion is used to determine the acceleration of an electron in the presence of an applied electric field. Then, its velocity is expressed via this acceleration.
An electron moves through the crystal, containing positive ions,...
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Colors and Magnetism03:02

Colors and Magnetism

13.8K
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...
13.8K
Properties of Transition Metals02:58

Properties of Transition Metals

29.3K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
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Related Experiment Video

Updated: Jan 5, 2026

Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework
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Superconductivity in an organometallic compound.

Ren-Shu Wang1, Liu-Cheng Chen, Hui Yang

  • 1School of Materials Science and Engineering, Faculty of Physics and Electronic Technology, Hubei University, Wuhan 430062, China. gaoyun@hubu.edu.cn huangzb@hubu.edu.cn.

Physical Chemistry Chemical Physics : PCCP
|October 23, 2019
PubMed
Summary

Superconductivity was experimentally achieved at 3.6 K in potassium-doped tri-o-tolylbismuthine, an organometallic compound. This discovery highlights benzene rings as key units and expands the search for new superconductors.

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Area of Science:

  • Organometallic Chemistry
  • Condensed Matter Physics
  • Materials Science

Background:

  • Organometallic compounds are crucial in chemistry, serving as catalysts and intermediates.
  • Recent theoretical work suggests potential for quantum phenomena like superconductivity in these materials.
  • Experimental evidence for superconductivity in organometallic compounds has been lacking.

Purpose of the Study:

  • To experimentally realize superconductivity in an organometallic compound.
  • To investigate the superconducting properties and identify the key structural components.
  • To expand the family of known organic superconductors.

Main Methods:

  • Synthesis of potassium-doped tri-o-tolylbismuthine.
  • Measurement of dc and ac magnetic susceptibility to detect the Meissner effect and zero-resistivity state.
  • X-ray diffraction, theoretical calculations, and Raman spectroscopy to determine phase and composition.

Main Results:

  • Superconductivity was achieved with a critical temperature of 3.6 K.
  • Evidence for both the Meissner effect and zero-resistivity state confirmed superconductivity.
  • The compound was classified as a type-II superconductor.
  • The benzene ring was identified as the essential superconducting unit.

Conclusions:

  • This work reports the first experimental realization of superconductivity in an organometallic compound.
  • Organometallic compounds represent a promising new class of organic superconductors.
  • The findings suggest a vast potential for discovering novel superconductors within this chemical family.