Chloroform-D

개요Deuterated chloroform (CDCl3), also known as chloroform-d, is an excellent everyday solvent choice for scientists who demand exceptional results. Commonly used as a solvent in proton NMR (1H NMR) spectroscopy, chloroform-d can dissolve a vast array of compounds with ease due to its weak polarity. It is often used in combination with methanol-d as a cosolvent. Plus, its low boiling point makes it relatively easy to recover a sample post-NMR analysis or during organic syntheses.

용도Chloroform-d is widely used in the organic solvent for the NMR analysis.

일반 설명Chloroform-d (Deuterochloroform, CDCl3), deuterated chloroform, is a 100% isotopically enriched NMR (Nuclear Magnetic Resonance) solvent. It is widely employed in high resolution NMR studies due to its high chemical and isotopic purity. Quantitaive infrared spectral investigations of carbon-deuterium stretching bands of chloroform-d in various organic solvents have been reported. Raman difference spectroscopic studies of mixtures of chloroform-d and liquid chloroform have been conducted to evaluate frequency shifts in the in the ν1 and ν2 bands of CHCl3 and CDCl3.

On a large-scale, chloroform-d (CDCl3) is synthesized by treatment of a hypochlorite salt with deuterated acetone/ethanol or the reaction between chloral and sodium deuteroxide (NaOD). The NaOD is prepared from the reaction of deuterium oxide (D2O) and sodium metal, which liberate deuterium gas from the reaction mixture; therefore, this reaction has drawbacks, including the danger of explosion of the deuterium gas and high risk for use of metal sodium on larger scales. In order to avoid the above drawbacks, the convenient reaction of sodium peroxide and D2O was used to prepare NaOD.