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Total assignment of the 1H and 13C NMR spectra of 3,6-bis(2'-pyridyl)pyridazine derivatives (n-dppn) have been recorded at 400 and 100 MHz, respectively.1Based on these data, the complete assignment of the 13C NMR chemical shift values was made by a 13C{1H} decoupling. The spectra clearly show that the n-dppn ligands exist in the cis–cis conformation at least in solution. Matrix assisted laser desorption ionization (MALDI) and time-of-flight mass spectrometry (TOFMS) are used to record the mass spectra of the n-dppn ligands. α-Cyano-4-hydroxycinnamic acid (CHCA) matrix promoted the molecular ion detection when 180 pmol of n-dppn is introduced into the TOFMS.

High resolution1H and13C NMR and mass spectral studies of substituted dipyridylpyridazine

High resolution¹H and¹³C NMR and mass spectral studies of substituted dipyridylpyridazine