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Figure 5
The conformations of N′-[(E)-ar­yl]pyrazine-2-carbohydrazides, where E(1) and E(2) are the trans and cis arrangements of the C=O and N2—CH3 bonds, respectively. Reproduced from Gomes et al. (2013BB41) with permission.

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 75| Part 3| March 2019| Pages 231-247
https://doi.org/10.1107/S2053229619002225
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