The 13 CNMR spectrum of homotropilidene taken at room temperature shows three peaks. Concept introduction: Carbon-13 (C13) nuclear magnetic resonance (most commonly known as carbon-13 NMR or 13 C NMR or sometimes simply referred to as carbon NMR) is the application of nuclear magnetic resonance (NMR) spectroscopy to carbon. It is analogous to proton NMR ( 1 HNMR) and allows the identification of carbon atoms in an organic molecule just as proton NMR identifies hydrogen atoms. As such 13 CNMR is an important tool in chemical structure elucidation in organic chemistry. 13 CNMR detects only the 13 C isotope of carbon, whose natural abundance is only 1.1%, because the main carbon isotope, 12 C, is not detectable by NMR since it has zero net spin. 13 C chemical shifts follow the same principles as those of 1 H, although the typical range of chemical shifts is much larger than for 1 H.

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Chapter 30.SE, Problem 12VC

Interpretation Introduction

Interpretation:

The ¹³CNMR spectrum of homotropilidene taken at room temperature shows three peaks.

Concept introduction:

Carbon-13 (C13) nuclear magnetic resonance (most commonly known as carbon-13 NMR or ¹³C NMR or sometimes simply referred to as carbon NMR) is the application of nuclear magnetic resonance (NMR) spectroscopy to carbon. It is analogous to proton NMR (¹HNMR) and allows the identification of carbon atoms in an organic molecule just as proton NMR identifies hydrogen atoms. As such ¹³CNMR is an important tool in chemical structure elucidation in organic chemistry. ¹³CNMR detects only the ¹³C isotope of carbon, whose natural abundance is only 1.1%, because the main carbon isotope, ¹²C, is not detectable by NMR since it has zero net spin.

¹³C chemical shifts follow the same principles as those of ¹H, although the typical range of chemical shifts is much larger than for ¹H.

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