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 (dī′ə-zēn′, dī-ăz′ĭn)
A compound containing a benzene ring in which two of the carbon atoms have been replaced by nitrogen atoms, especially any of three isomers having the composition C4H4N2.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˈdaɪəˌziːn; daɪˈæziːn; -ɪn) or


(Elements & Compounds) any organic compound whose molecules contain a hexagonal ring of four carbon atoms and two nitrogen atoms, esp any of three isomers with the formula C4N2H4. See also pyrimidine
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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The X-ray data for the corresponding chloride complexes, [[{Pt(en)Cl}.sub.2]([mu]-pydz)][Cl.sub.2] and [[{Pt(en)Cl}.sub.2]([mu]-pz)][Cl.sub.2], confirmed the hidden position of the Pt(II) centers in the pydz-bridged Pt(II) complex caused by their close proximity due to the ortho-positioning of the two diazine nitrogen atoms (the two Pt(II) centers were only 3.2535(4) [Angstrom] apart), compared to the separation of 6.7890(3) [Angstrom] in the analogous pz-bridged Pt(II) dimer.
[12] report on a MWCNT paste electrode modified with the fenchone diazine tetracarbonylmolybdenum(0) complex, to sensitive determination of Cu(II) by using square wave anodic stripping voltammetry; the limit of detection is 80 pM; Fu et al.