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56930-39-3

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56930-39-3 Usage

Explanation

The molecular formula represents the number of atoms of each element present in a molecule of the compound.

Explanation

Crown ethers are a class of cyclic polyethers that can selectively bind metal ions due to their size and structure.

Explanation

This name is derived from the compound's structure, indicating the presence of two chlorine atoms at the 1 and 20 positions and a 6-membered ring.

Explanation

As a phase transfer catalyst, it facilitates reactions between compounds in different phases (e.g., solid, liquid, or gas), making the reaction more efficient.

Explanation

Due to its ability to complex with metal ions, it is used in the extraction and separation processes of various metal ions.

Explanation

It is used in chromatography techniques to separate and analyze metal ions based on their interaction with the crown ether.

Explanation

It is used in the development of ion selective electrodes, which are sensors that can selectively measure the concentration of specific ions in a solution.

Explanation

The presence of two chlorine atoms at the 1 and 20 positions increases the compound's stability and selectivity for certain metal ions.

Explanation

Its unique properties make it a valuable tool in various fields, including chemical research and industrial applications.

Family

Crown ethers

Application

Phase transfer catalyst

Application

Extraction and separation of metal ions

Application

Chromatography

Application

Ion selective electrodes

Dichloro substitution

1 and 20 positions

Usefulness

Chemical research and industry

Check Digit Verification of cas no

The CAS Registry Mumber 56930-39-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,9,3 and 0 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 56930-39:
(7*5)+(6*6)+(5*9)+(4*3)+(3*0)+(2*3)+(1*9)=143
143 % 10 = 3
So 56930-39-3 is a valid CAS Registry Number.

56930-39-3Relevant articles and documents

Molecular motion in crown ethers. Application of 13C and 2H NMR to the study of 4-carboxybenzo-24-crown-8 ether and its KNCS complex in solution and in the solid phase

Buchanan,Moghimi,Ratcliffe

, p. 1437 - 1446 (1996)

Large-amplitude solid phase molecular motion has been detected in the macrocyclic ring of the title crown either via 13C CPMAS NMR. To study the details of the dynamic processes, two selectively deuterated d4 derivatives have been prepared and examined via 2H NMR as a function of temperature. A phase change occurring around 277 K has been verified by differential scanning calorimetry (DSC) and a model for the motional processes has been developed involving equivalent two-site flips of the CD2 groups. The amplitude of the CD2 motions apparently decreases the closer the group is to the aromatic ring. The influence of KNCS complexation on the 13C CPMAS spectrum and on 13C spin lattice relaxation times in solution has been explored.

Conductance study of alkali metal complexes with 4′-carboxy-benzo-24-crown-8 and 4′-amido-benzo-24-crown-8 in nitromethane, acetonitrile and dimethylformamide solutions

Ganjali,Rouhollahi,Moghimi,Shamsipur

, p. 1172 - 1181 (2007/10/03)

Synthetic procedures have been developed for the preparation of two new crown ethers 4′-carboxy-benzo-24-crown-8 (COOH-B24C8) and 4′-amido-benzo-24-crown-8 (CONH2-B24C8). The formation of alkali metal complexes with the two crown ethers was investigated in nitromethane, acetonitrile and dimethylformamide solutions conductometrically at 25.0°C. Stability constants of the resulting 1:1 complexes were determined by the molar conductance-mole ratio data. In all cases, CONH2-B24C8 was found to form a more stable alkali complex than does COOH-B24C8. For both crown ethers, and in all three solvents used, the stability of the resulting alkali complexes was found to vary in the sequence K+ > Rb+ > Cs+ > Na+ > Li+. The stabilities of the complexes varied inversely with the Gutmann donicity of the solvents.

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