The preparation and coordination chemistry of 2,2′:6′,2″-terpyridine macrocycles – 1 was written by Constable, Edwin C.;Lewis, Jack. And the article was included in Polyhedron in 1982.Electric Literature of C7H7ClN2 This article mentions the following:
Derivatives of 2,2′:6′,2”-terpyridine were prepared with the intention of forming macrocycles incorporating the 2,2′:6′,2”-terpyridyl moiety. Bis(methylhydrazino)phenylterpyridine I (R = MeNNH2) and a number of metal complexes of this novel pentadentate ligand were prepared Thus, Ortoleva-King reaction of 2-acetyl-6-bromopyridine with iodine and pyridine gave pyridinium iodide II. Cyclocondensation of II and 2-bromo-6-cinnamoylpyridine in refluxing HOAc containing NH4OAc gave I (R = Br). Reaction of the latter with MeNHNH2 gave I (R = MeNNH2) which formed colored complexes with Cr, Mn, Fe, Co, and Ni. In the experiment, the researchers used many compounds, for example, 1-(Cyanomethyl)pyridin-1-ium chloride (cas: 17281-59-3Electric Literature of C7H7ClN2).
1-(Cyanomethyl)pyridin-1-ium chloride (cas: 17281-59-3) belongs to pyridine derivatives. Pyridine is diamagnetic and has a diamagnetic susceptibility of −48.7 × 10−6 cm3·mol−1.The molecular electric dipole moment is 2.2 debyes. The standard enthalpy of formation is 100.2 kJ·mol−1 in the liquid phase and 140.4 kJ·mol−1 in the gas phase. One of the examples of pyridines is the well-known alkaloid lithoprimidine, which is an A3 adenosine receptor antagonist and N,N-dimethylaminopyridine (DMAP) analog, commonly used in organic synthesis.Electric Literature of C7H7ClN2