Rotation about the N²–N³ bond in 3,3-dimethyl-1-(isoxazol-3-yl)triazenes

Abstract

The rotational barrier around the N²–N³ bond of a series of 3,3-dimethyl-1-(isoxazol-3-yl)triazenes was evaluated by means of NMR line shape analysis. The results obtained were compared to ¹⁵N chemical shift measurements and semi-empirical quantum mechanical calculations. An increase of N²–N³ bond order, possibly due to an electron withdrawing effect of the isoxazole ring, was noted in our compounds.

References

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