A series of NЈ- (3-amino-1H-isoindol-1-ylidene)alkyl (aryl,heteroaryl)carbohydrazides have been synthesized in good yields and their structure and conformational behavior in the solid state and in solution have been studied by X-ray crystallography, NMR spectroscopy, and quantum calculations. (E)/(Z) amide-type isomerism and the dependence of the iso-
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