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Related Concept Videos

IR Spectroscopy: Molecular Vibration Overview01:24

IR Spectroscopy: Molecular Vibration Overview

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When Infrared (IR) radiation passes through a covalently bonded molecule, the bonds transition from lower to higher vibrational levels. The fundamental vibrational motions that result in infrared absorption can be classified as stretching or bending vibrations.
Stretching vibrations are vibrational motions that occur along the bond line, changing the bond length or distance between two bonded atoms. They are further distinguished as symmetric or asymmetric. In symmetric stretching, the...
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Radical reactions can occur either intermolecularly or intramolecularly. In an intermolecular radical reaction, a nucleophilic radical adds to an electrophilic alkene or vice versa. In such reactions, the radical and generally the alkene, which is also called the radical trap, are two different molecules. Additionally, for such intermolecular reactions to occur, the radical trap must be active, present in an excess concentration, and the radical starting material must have a weak...
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Infrared (IR) Spectroscopy: Overview01:09

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When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...
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Ions, Molecules, and Compounds01:23

Ions, Molecules, and Compounds

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Ions - When an atom participates in a chemical reaction that results in the donation or acceptance of one or more electrons, the atom becomes positively or negatively charged. This frequently happens for most atoms to have a full valence shell. This can happen either by gaining electrons to fill a shell that is more than half-full or by giving away electrons to empty a shell that is less than half-full, thereby leaving the next smaller electron shell as the new, full valence shell. An atom with...
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Applications of IR Spectroscopy: Overview01:11

Applications of IR Spectroscopy: Overview

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The non-destructive nature and ability to provide valuable chemical information make IR spectroscopy a versatile technique with broad applications in various scientific and industrial fields. IR spectroscopy is commonly used to identify and characterize organic and inorganic compounds. It provides information about the functional groups present in a molecule and the bonding between atoms. This helps in the structural elucidation of compounds during organic synthesis, pharmaceutical research,...
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IR Spectrum01:19

IR Spectrum

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When infrared (IR) radiation passes through a molecule, the bonds stretch or bend by absorbing the radiation. This absorption creates the molecule's absorption spectrum, which is the plot of its percentage transmittance versus wavenumber.
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IridiumIII Luminescent Probe for Detection of the Malarial Protein Biomarker Histidine Rich Protein-II
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Iridates from the molecular side.

Kasper S Pedersen1,2,1,3, Jesper Bendix4, Alain Tressaud1,3

  • 1CNRS, ICMCB, UPR 9048, Pessac 33600, France.

Nature Communications
|July 21, 2016
PubMed
Summary
This summary is machine-generated.

Researchers created a new fluorido-iridate model, [IrF6](2-), to study exotic phenomena in iridates. This molecular analogue provides insights into the electronic structure of these complex magnetic quantum materials.

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Area of Science:

  • Solid State Chemistry
  • Quantum Materials Science
  • Inorganic Chemistry

Background:

  • Exotic phenomena in iridates, oxides of paramagnetic iridium (IV) ions, are linked to crystal field, magnetic interactions, and spin-orbit coupling.
  • The electronic structure of iridates is complex and difficult to study using the chemically inaccessible isolated [IrO6](8-) species.

Purpose of the Study:

  • To develop an accessible molecular model for studying iridates.
  • To elucidate the electronic structure of iridates by creating a suitable analogue.

Main Methods:

  • Substitution of oxide ions in [IrO6](8-) with isoelectronic fluorides.
  • Synthesis and characterization of the fluorido-iridate species [IrF6](2-).

Main Results:

  • The synthesized [IrF6](2-) species shares the same electronic ground state as the {IrO6}(8-) fragment found in iridates.
  • This fluorido-iridate serves as an ideal model system for iridate research.

Conclusions:

  • Fluorido-iridates offer a viable alternative for studying the electronic structure of iridates.
  • These findings open new avenues for synthesizing quantum materials using fluorido-iridates via soft chemistry routes.