Abstract
Cyclic hydrazides (derivatives of phtalhydrazide,pyrozolidone-3, indazolone, cyclic hydrazide camphoric acid) are studied by the NMR1H method. The size of the dihedral HNNH angle of several model compounds (pyrozolidone-3, cyclic hydrazide norcamphoric acid) are calculated by the MINDO/3 SSF MO LCAO method. It is shown that in the hydrazides with HNNH dihedral angle 0–70° the magnitude of the HNNH spin-spin interaction constant does not exceed 1 Hz. The form of its dependence on the dihedral angle is determined.
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Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 25, No. 3, pp. 363–366, 1989.
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Kapkan, L.M., Chervinskii, A.Y., Pekhtereva, T.M. et al. Form of the dihedral angle dependence of the spin-spin coupling constant JHNNH . Theor Exp Chem 25, 338–341 (1989). https://doi.org/10.1007/BF01299017
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DOI: https://doi.org/10.1007/BF01299017