Doublet
| Formula / Notation | Na D-line: 589.0 and 589.6 nm |
|---|---|
| Also Known As | Spectroscopic doublet, NMR doublet (d), spin-orbit doublet, fine-structure doublet |
What is Doublet?
In spectroscopy, a doublet is a pair of closely spaced spectral lines arising from spin-orbit coupling or other splitting mechanisms. In NMR spectroscopy, a doublet occurs when a proton is coupled to one neighboring proton, resulting in two lines of equal intensity.
Formula & Notation
Other Names / Synonyms: Spectroscopic doublet, NMR doublet (d), spin-orbit doublet, fine-structure doublet
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
In spectroscopy, a doublet is a pair of closely spaced spectral lines arising from spin-orbit coupling or other splitting mechanisms. In NMR spectroscopy, a doublet occurs when a proton is coupled to one neighboring proton, resulting in two lines of equal intensity.
Doublets in atomic spectroscopy are used to identify elements (sodium doublet in flame tests and AAS). NMR doublets identify the number of neighbouring protons in organic structure elucidation. Doublet splitting patterns are fundamental to ¹H and ¹³C NMR interpretation.
No direct safety concern for the concept. Spectroscopic instruments (UV lamps, laser sources, NMR magnets) have their own associated hazards: UV exposure, strong magnetic fields, cryogenic coolants. Follow instrument-specific safety guidelines.
The formula or notation for Doublet is: Na D-line: 589.0 and 589.6 nm