3,6-Bis(2-pyridyl)di-1,2,4-triazolo[3,4-a:4',3'-c]phthalazine.
The title compound, C20H12N8, (I), has been prepared by the reaction of 1,4-dihydrazinophthalazine and pyridine-2-carboxaldehyde, followed by an oxidative cyclization by treatment with bromine. In the solid state, the molecules of (I) are discrete, comprising a fused and twisted four-ring system with an overall helical appearance. The distance between the two intramolecular pyridyl N atoms is 3.075 (2) A, this short contact distance suggesting a pi-pi interaction.
Chang
Wen-Fu
WF
Institute of Chemistry, Academia Sinica, Nankang, Taipei 115, Taiwan.
Wen
Yuh-Sheng
YS
Liu
Ling-Kang
LK
D000959:Antihypertensive Agents / Q000138:chemical synthesis / Q000737:chemistry; D018360:Crystallography, X-Ray; D015394:Molecular Structure; D010793:Phthalazines / Q000138:chemical synthesis / Q000737:chemistry*; D011725:Pyridines / Q000138:chemical synthesis / Q000737:chemistry*; D014230:Triazoles / Q000138:chemical synthesis / Q000737:chemistry*
D000959:Antihypertensive Agents; D010793:Phthalazines; D011725:Pyridines; D014230:Triazoles