Is Chem3D free?

An alternative for Mac users As you cannot download Chem3D to a Mac, this free software from ChemAxon may be a useful alternative: MarvinSketch.

What are the functional group characteristics of absorption?

Functional Group Characteristic Absorption(s)(cm-1) Notes Alkyl C-H Stretch 2950 – 2850 (m or s) Alkane C-H bonds are fairly ubiquitous and therefore usually less useful in determining structure. Alkenyl C-H Stretch Alkenyl C=C Stretch 3100 – 3010 (m) 1680 – 1620 (v) Absorption peaks above 3000 cm-1are frequently diagnostic of unsaturation

What is the IR spectrum table used for?

IR Spectrum Table & Chart The IR Spectrum Table is a chart for use during infrared spectroscopy. The table lists IR spectroscopy frequency ranges, appearance of the vibration and absorptions for functional groups. There are two tables grouped by frequency range and compound class.

What is the IR table by compound class?

IR Table by Compound Class Compound Class Group Absorption (cm -1) Comments aliphatic primary amine N-H stretching 3400-3300 alkane C-H stretching 3000-2840 C-H bending 1465 methylene group C-H bending 1450 methyl group

What is the IR absorption of alkyl C-H stretch?

Table of IR Absorptions Functional Group Characteristic Absorption(s)(cm-1) Notes Alkyl C-H Stretch 2950 – 2850 (m or s) Alkane C-H bonds are fairly ubiquitous and therefore usually less useful in determining structure. Alkenyl C-H Stretch Alkenyl C=C Stretch 3100 – 3010 (m) 1680 – 1620 (v)