Typical c 13 chemical shifts δ from tms type of carbon chemical shift ch 3 10 40 ch 2 20 65 c 70 90 c 100 150. Tetramethylsilan tms ch 3 4 si is generally used for standard to determine chemical shift of compounds. Table 13 2 regions of the ih nmr spectrum halogen chemical shift ô c i allylic c saturated i aromatic c c vinylic table 13 3 correlation of ih chemical shift with environment c c c c 0 c. 
				
			
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