15N coupling constant

Support for this view is found in the I95Pt-15N coupling constants for dodecylamine complexes of platinum(II) and platinum(IV), where 7r-bonding cannot of course occur, which exhibit similar trends (Table 3.24) [156]. 

More recently a few NMR investigations on the isomerism of diazo compounds Ar — N2-X have been published, including an early one by Suhr (1963, lH NMR), another by Yustynyuk et al. (1976 a, 13C NMR), and a more recent one by Simova et al. (1983). The latter also evaluated 13C-15N coupling constants. In some cases isomers gave distinctly different NMR results. They were interpreted more recently by Elofson et al. (1990). 

In order to establish which form is present in the solution, /(15N,15N) coupling constants were measured using ID 15N INADEQUATE on a compound that was 20% 15N-labelled uniformly in all four nitrogen positions. Values of 12.1-12.3 Hz in different solvents were obtained. These correspond to the 1/(15N,15N) between Nl and N2 (N4 and N5) and prove that this compound exists exclusively in the... 

SCHEME 2. The magnitude of the calculated 7(6Li,15N) coupling constant reflects the coordination number of lithium... 

---