NMR is widely used in chemistry to characterize chemical compounds. But in compounds with multiple numbers of protons, it is often difficult to assign 1H resonances to specific hydrogen atoms. In these cases, hydrogen assignments can be made using 1H-1H, 1H-13C NMR correlations by techniques such as COSY, HSQC, HMBC, etc. Although these techniques allow one to make accurate assignments, these technique require lengthy NMR usage times, and are normally unavailable to undergraduate students. We have found a simpler technique to make 1H assignments by using proton coupling constant J values for a limited number of derivatives of tris-(2,2’-bipyridine)ruthenium(II) complexes. The methods presented in the poster will be useful in undergraduate chemistry teaching laboratories and in undergraduate research.

Simple technique for students to assign hydrogen atom resonances in heterocyclic ligand metal complexes

249th National Meeting (2015)

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Simple technique for students to assign hydrogen atom resonances in heterocyclic ligand metal complexes<br />