Stereochemical studies of heterocyclic compounds. XII. Crystal and molecular structure of 1-(2-amino-1-cyano-2-thioethenyl)pyridinium ylides was written by Fischer, E.;Knippel, M.;Wollin, K. M.;Kalman, A.;Argay, G.. And the article was included in Journal fuer Praktische Chemie (Leipzig) in 1983.Recommanded Product: 1-(Cyanomethyl)pyridin-1-ium chloride This article mentions the following:
E/Z Isomerization and hindered rotation of the pyridine ring were examined in I (R = Me, R1 = Et). The former process had ΔG* = 67 kJ/mol; the latter had ΔG* = 46 kJ/mol. Crystallog. data, bond lengths, and bond angles were determined for I (R = H, R1 = Ph); both E and Z isomers exists in the crystal. The C:C double bond is considerably longer than those in some olefins. In the experiment, the researchers used many compounds, for example, 1-(Cyanomethyl)pyridin-1-ium chloride (cas: 17281-59-3Recommanded Product: 1-(Cyanomethyl)pyridin-1-ium chloride).
1-(Cyanomethyl)pyridin-1-ium chloride (cas: 17281-59-3) belongs to pyridine derivatives. Pyridine has a dipole moment and a weaker resonant stabilization than benzene (resonance energy 117 kJ·mol−1 in pyridine vs. 150 kJ·mol−1 in benzene). Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C–H in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Recommanded Product: 1-(Cyanomethyl)pyridin-1-ium chloride