# How to report a triplet of septets in NMR tabulation?

Does anyone know the proper format to report an iso-butyl group, eg. $$\ce{R-CH2-C\color{red}{H}(CH3)2}$$, in $$\ce{^1H}$$ NMR tabulation? The proton in red should be a triplet of septets, so I've written:

δ 2.72 (d, J = 5.5 Hz, 2H), 1.80 (tsep, J = 5.5, 5.3 Hz, 1H), 1.02 (d, J = 5.3 Hz, 6 H).

Is the use of "tsep" acceptable here?

• I used to call it heptet, but nowadays, those have changed. For example, now they call all pentets as quintets. :-) About 5.5 vs 5.3, I think OP has been using $\pu{400 MHz}$ or bigger machine so they can measure up to $\pu{0.01 Hz}$. – Mathew Mahindaratne Apr 7 '19 at 18:47