Lu, Jinzhen published the artcileOctapi Interactions: Self-Assembly of a Pd-Based [2]Catenane Driven by Eightfold π Interactions, Related Products of pyrazoles-derivatives, the publication is Journal of the American Chemical Society (2009), 131(30), 10372-10373, database is CAplus and MEDLINE.
An unprecedented 2.5 nm array of π interactions between eight aromatic rings drives the formation of a [2]catenane, {[Pd(dppp)]2L2}28+ (L = 1,2-bis(4-(4-pyridyl)pyrazolyl)ethane; dppp = 1,3-bis(diphenylphosphino)propane). Disruption of this array through the use of longer ligands gave only single, uncatenated rings as observed in {[Pd(dppp)2]2L1}4+ (L = 1,3-bis(4-(4-pyridyl)pyrazolyl)propane). The catenated complex persists in solution alongside its constituent metallomacrocycles.
Journal of the American Chemical Society published new progress about 19959-71-8. 19959-71-8 belongs to pyrazoles-derivatives, auxiliary class Pyrazole,Pyridine, name is 4-(1H-Pyrazol-4-yl)pyridine, and the molecular formula is C8H7N3, Related Products of pyrazoles-derivatives.
Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics