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What is Organic Chemistry?02:17

What is Organic Chemistry?

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Organic chemistry is the study of compounds of carbon called organic compounds. Organic compounds either originate from living organisms or are synthesized by chemists. A defining trait of these compounds is the presence of carbon as the principal element, which is bonded to other carbon atoms and other elements such as hydrogen, oxygen, nitrogen, and sulfur. The existence of a wide array of organic molecules is a consequence of carbon atoms’ ability to form up to four strong bonds to...
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All living things are formed mostly of carbon compounds called organic compounds. The category of organic compounds includes both natural and synthetic compounds that contain carbon. Although a single, precise definition has yet to be identified by the chemistry community, most agree that a defining trait of organic molecules is the presence of carbon as the principal element, bonded to hydrogen and other carbon atoms. However, some carbon-containing compounds such as carbonates, cyanides, and...
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Veins, while chiefly responsible for circulating blood back to the heart, also function as storage vessels for blood. They house approximately 64 percent of the body's total blood volume, a feat made possible by their high capacitance—the inherent ability to expand and accommodate large volumes of blood, even under low pressure. The large diameter and thin walls of veins augment their distensibility, significantly more so than arteries, due to their classification as capacitance...
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Ideally, an unpaired electron shows a single peak in the EPR spectrum due to the transition between the two spin energy states. However, coupling interactions can occur between the spins of the unpaired electron and any neighboring spin-active nuclei. This hyperfine coupling results in hyperfine splitting, where the EPR signal is split into multiplets. The signals split into 2nI + 1 peaks, where n is the number of equivalent nuclei and I is the nuclear spin. These splitting patterns provide...
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Organic Functionalization of Polyoxovanadate-Alkoxide Clusters: Improving the Solubility of Multimetallic Charge Carriers for Nonaqueous Redox Flow Batteries.

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Versatile Organic Chemistry on Vanadium-Based Multi-Electron Reservoirs.

Olaf Nachtigall1, Johann Spandl1

  • 1Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195, Berlin, Germany.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|January 10, 2018
PubMed
Summary

This study details the creation of stable, soluble vanadium-organic compounds. These versatile materials offer new possibilities for macromolecular chemistry and biochemical redox labeling.

Keywords:
polyoxometalatespost-functionalizationredox chemistrysolvothermal reactionsvanadium

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Area of Science:

  • Inorganic Chemistry
  • Materials Science
  • Organic Chemistry

Background:

  • Classical polyoxometalates (POMs) often suffer from poor solubility and hydrolytic instability.
  • Functionalization of POM cores is challenging, limiting their application scope.

Purpose of the Study:

  • To synthesize novel, stable, and soluble organically functionalized vanadium aggregates.
  • To explore the post-functionalization capabilities and redox properties of these new compounds.
  • To evaluate their potential as building blocks in macromolecular chemistry and as redox labels.

Main Methods:

  • Synthesis of hexanuclear vanadium ({V6O19}) aggregates with alkoxo ligands replacing oxo groups.
  • Post-functionalization via copper(I)-catalyzed Huisgen cycloaddition and imine formation.
  • Characterization of redox behavior, stability, and solubility.

Main Results:

  • Successfully synthesized two neutral, mixed-valence vanadium aggregates with alkoxo ligands, exhibiting enhanced stability and solubility compared to traditional POMs.
  • Demonstrated versatile post-functionalization, enabling the introduction of diverse organic moieties.
  • Synthesized and studied a trimer of hexanuclear vanadium units linked by an aromatic triimino core.

Conclusions:

  • The developed vanadium compounds possess excellent stability, solubility, and versatile reactivity.
  • Their tunable redox properties make them promising candidates for advanced applications in macromolecular construction and biochemical sensing.