ORGANIC CHEMISTRY Chapter g 9. 10B One Peak for Each Unique Carbon atom o Each unique carbon atom in an ordinary organic molecule produces only one C NMR peak 9 Ihere is no carbon-carbon coupling that causes splitting of signals into multiple peaks h attached to carbon can split C NMR signals into multiple peaks o A 3C NMR Spectrum that has the proton interactions eliminated is said to be broadband (BB)proton decoupled Department of Chemistry, Xiamen UniversityORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 9 9.10B One Peak for Each Unique Carbon Atom Each unique carbon atom in an ordinary organic molecule produces only one 13C NMR peak. There is no carbon-carbon coupling that causes splitting of signals into multiple peaks. H attached to carbon can split 13C NMR signals into multiple peaks. A 13C NMR spectrum that has the proton interactions eliminated is said to be broadband (BB) proton decoupled