{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

SpectroscopicData

SpectroscopicData - Useful Spectroscopic Data Important...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Useful Spectroscopic Data Important Infrared Absorptions Type of Absorption Frequency, cm –1 , (Intensity) Comment Alkanes C–H stretch 2850–3000 (m) occurs in all compounds with aliphatic C–H bonds Alkenes C=C stretch –CH=CH 2 1640 (m) C CH 2 1655 (m) others 1660–1675 (w) not observed if alkene is symmetrical =C–H stretch 3000–3100 (m) =C–H bend –CH=CH 2 910–990 (s) C CH 2 890 (s) C C H H 960–980 (s) C C H H 675–730 (s) position is highly variable C C H 800–840 (s) Alcohols and Phenols O–H stretch 3200–3400 (s) C–O stretch 1050–1250 (s) also present in other compounds with C–O bonds: ethers, esters, etc. Alkynes C ≡ C stretch 2100–2200 (m) not present or weak in many internal alkynes ≡ C–H stretch 3300 (s) present only in terminal alkynes Aromatic Compounds C=C stretch 1500, 1600 (s) two absorptions C–H bend 650–750 (s) overtone 1660–2000 (w) Aldehydes C=O stretch ordinary 1720–1725 (s) α , β-unsaturated 1680–1690 (s) benzaldehydes...
View Full Document

{[ snackBarMessage ]}

Page1 / 3

SpectroscopicData - Useful Spectroscopic Data Important...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon bookmark
Ask a homework question - tutors are online