What are some common chemical shift ranges in #C^13 NMR# spectrum?
1 Answer
Nov 8, 2015
See below.
Explanation:
The common broad ranges are:
#160-220 color(white)(X)"C=O"# #115-150color(white)(X)"C=C, C≡N"# #10-90color(white)(XX)"Alkane C"#
Each of these ranges is further subdivided. For example,
160-220 ppm Range
#205-220 color(white)(X)"RCOR"# #190-200 color(white)(X)"RCHO"# #160-185 color(white)(X)"RCOOH, RCOOR"#
10-90 ppm Range
#50-90color(white)(X)"RCH"_2"O"# #30-60color(white)(X)"RCH"_2"Cl"# #25-35color(white)(X)"R"_3"CH"# #16-25color(white)(X)"RCH"_2"R"# #10-15color(white)(X)"RCH"_3#
These ranges are often presented in a chart like the one below.
Even this limited information might enable you to match the carbon atoms to their corresponding peaks in the NMR spectrum of methyl methacrylate.
