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Solvents01:12

Solvents

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A solvent is a substance, most often a liquid, that can dissolve other substances. Here, the substance being dissolved is called a solute. When a solvent and a solute combine, they form a solution - a homogenous mixture of both the solvent and the solute. Water is a universal biological solvent. Its polar structure allows it to dissolve many other polar compounds. The ability of water to dissolve is governed by a balance between water molecules binding to each other and binding to the solute.
A...
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Physical Properties of Carboxylic Acid Derivatives01:19

Physical Properties of Carboxylic Acid Derivatives

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Intermolecular forces dictate several physical properties such as boiling points, melting points, solubilities, and so forth. They are classified into four types: ionic forces, hydrogen bonds, dipole–dipole forces, and dispersion forces. Ionic forces are the strongest, while dispersion forces are the weakest.
Among the carboxylic acid derivatives, the boiling points of acid chlorides and esters are very similar and are the lowest in the series. Acid anhydrides have slightly higher boiling...
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Carboxylic Acid Derivatives: Overview01:15

Carboxylic Acid Derivatives: Overview

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Carboxylic acid derivatives are formed by replacing the hydroxyl group of carboxylic acids with a different functional group. The most common carboxylic acid derivatives are:
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Entropy and Solvation02:05

Entropy and Solvation

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The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...
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Spectroscopy of Carboxylic Acid Derivatives01:26

Spectroscopy of Carboxylic Acid Derivatives

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Infrared spectroscopy is primarily used to determine the types of bonds and functional groups. In carboxylic acid derivatives, a typical carbonyl bond absorption is observed around 1650–1850 cm−1. For esters, the absorption is recorded at around 1740 cm−1, while acid halides show the absorption at about 1800 cm−1. Another acid derivative, the acid anhydrides, exhibit two carbonyl absorption around 1760 cm−1 and 1820 cm−1, arising from the symmetrical and...
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Physical Properties of Carboxylic Acids01:31

Physical Properties of Carboxylic Acids

5.5K
Carboxylic acids with lower molecular weight exhibit a sharp and unpleasant odor. They also have higher boiling and melting points than analogous compounds, such as aldehydes, ketones, and alcohols.
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Preparation of Binary and Ternary Deep Eutectic Systems
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Nanoscopic study on carvone-terpene based natural deep eutectic solvents.

Sara Rozas1, Noor Alomari2, Santiago Aparicio1

  • 1Department of Chemistry, University of Burgos, 09001 Burgos, Spain.

The Journal of Chemical Physics
|December 16, 2021
PubMed
Summary

Carvone-based natural deep eutectic solvents (NADES) show promise for carbon dioxide capture. Molecular simulations confirm their potential as environmentally friendly and effective CO2 solubilizers.

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Area of Science:

  • Green Chemistry
  • Computational Chemistry
  • Materials Science

Background:

  • Natural deep eutectic solvents (NADES) offer sustainable alternatives to conventional solvents.
  • Carvone, a terpene, is explored as a key component in novel NADES formulations.
  • Understanding solvent properties is crucial for applications like gas capture.

Purpose of the Study:

  • To investigate terpene-based NADES using carvone as a hydrogen bond acceptor.
  • To evaluate the CO2 solubilization performance and bulk properties of these NADES.
  • To predict the toxicity of these environmentally friendly solvent systems.

Main Methods:

  • Density Functional Theory (DFT) for molecular cluster analysis.
  • Atoms-in-a-molecule (AIM) approach for topological characterization.
  • COSMO-RS calculations for CO2 solubility and solvent polarity.
  • Molecular Dynamics (MD) simulations for bulk liquid properties.
  • Toxicity property prediction.

Main Results:

  • DFT and AIM analyses elucidated intermolecular forces in carvone-based NADES.
  • COSMO-RS predicted favorable CO2 solubilization and identified solvent polarity.
  • MD simulations correlated liquid properties with macroscopic behavior.
  • Predicted toxicity data suggests a favorable environmental profile.

Conclusions:

  • Carvone is a suitable component for designing effective and environmentally friendly NADES.
  • These NADES demonstrate significant potential for carbon dioxide capture applications.
  • The study provides a comprehensive characterization of novel terpene-based solvents.