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Related Concept Videos

Properties of Transition Metals02:58

Properties of Transition Metals

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.
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.
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...
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.
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...
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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An In Vitro Enzymatic Assay to Measure Transcription Inhibition by Gallium(III) and H3 5,10,15-tris(pentafluorophenyl)corroles
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An In Vitro Enzymatic Assay to Measure Transcription Inhibition by Gallium(III) and H3 5,10,15-tris(pentafluorophenyl)corroles

Published on: March 18, 2015

Gold(I) and gold(III) corroles.

Elena Rabinovich1, Israel Goldberg, Zeev Gross

  • 1Department Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, 32000, Israel.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|October 6, 2011
PubMed
Summary
This summary is machine-generated.

Researchers synthesized novel gold(I) and gold(III) corrole complexes. The gold(III) complex exhibits unique room-temperature phosphorescence, a first for this class of gold-porphyrinoid compounds.

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Hydroquinone Based Synthesis of Gold Nanorods
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Hydroquinone Based Synthesis of Gold Nanorods

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Hydroquinone Based Synthesis of Gold Nanorods
08:55

Hydroquinone Based Synthesis of Gold Nanorods

Published on: August 10, 2016

Area of Science:

  • Inorganic Chemistry
  • Materials Science
  • Photochemistry

Background:

  • Corrole complexes are macrocyclic compounds with diverse applications.
  • Gold complexes, particularly gold(I) and gold(III), are of interest for their unique electronic and photophysical properties.
  • Porphyrinoids, including corroles, offer tunable electronic structures.

Purpose of the Study:

  • To synthesize and characterize novel gold(I) and gold(III) corrole complexes.
  • To investigate the structural, photophysical, and electrochemical properties of these new complexes.
  • To explore potential applications based on their unique characteristics.

Main Methods:

  • Synthesis of gold(I) and gold(III) corrole complexes using brominated corrole ligands.
  • X-ray crystallography for detailed structural elucidation.
  • Photophysical measurements to assess luminescence properties.
  • Electrochemical techniques to determine redox behavior.

Main Results:

  • Successfully synthesized and structurally characterized mononuclear gold(I) and gold(III) corrole complexes.
  • The gold(I) corrole complex is the first reported mononuclear and chiral complex in the porphyrinoid family.
  • The gold(III) corrole complex exhibits phosphorescence at ambient temperatures, a significant finding.

Conclusions:

  • The synthesized gold corrole complexes represent new additions to the field of organometallic chemistry.
  • The discovery of room-temperature phosphorescence in the gold(III) corrole complex opens avenues for new luminescent materials.
  • These findings highlight the potential of corrole ligands in designing functional gold complexes.