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Volume 16 (2002), Issue 1, Pages 37-41

High resolution 1H and 13C NMR and mass spectral studies of substituted dipyridylpyridazine

Arab K. El-Qisairi

Department of Chemistry, Mu'tah University, Mu'tah, Jordan

Copyright © 2002 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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.