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Updated: Jun 1, 2026
![Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F60786.jpg&w=3840&q=50)
Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
3-Chloro-6-[(E)-2-(1-phenyl-ethyl-idene)hydrazin-yl]pyridazine
Abstract:
Two independent mol-ecules are present in the asymmetric unit of the title compound, C(12)H(11)ClN(4), (Z' = 2): the dihedral angles between the phenyl and pyridizine rings are 8.35 (10) and 37.64 (6)°. In the crystal, the two mol-ecules form inversion dimers with R(2) (2)(8) ring motifs through inter-molecular N-H⋯N hydrogen bonds. The crystal structure is stabilized by π-π inter-actions between the pyridazine rings of symmetry-related molecules. In one of the independent mol-ecules, the centroid-centroid separations are 3.6927 (13) and 3.7961 (13) Å, whereas in the other, the separations are 3.6909 (13) and 3.9059 (13) Å.
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