Transcription of 13C NMR - UCLA
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13C NMR - UCLA
13. C NMR. The 13c nmr is generated in the same fundamental was as proton NMR spectrum. Only % of naturally occurring carbon is 13C and actually an advantage because of less coupling. Requirement for NMR: Spin quantum # (I) 0 Meaning must be an odd number and/or neutrons. Ex. 1H, 2H, 13C, 19F, etc ( Thinkbook ). How do we find this? Look at the atomic number. The 13c nmr is directly about the carbon skeleton not just the proton attached to it. a. The number of signals tell us how many different carbons or set of equivalent carbons b. The splitting of a signal tells us how many hydrogens are attached to each carbon.
13C NMR The 13C NMR is generated in the same fundamental was as proton NMR spectrum. Only 1.1 % of naturally occurring carbon is 13C and actually an advantage because of less coupling. Requirement for NMR: Spin quantum # (I) ≠ 0 Meaning must be an odd number
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