Related Experiment Video
Updated: Jun 1, 2026

14:11
Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
Published on: June 10, 2021
4,4'-Di-4-pyridyl-2,2'-dithio-dipyrimidine
Hai-Bin Zhu1, Hai Wang, Lei Li
1School of Chemistry and Chemical Engineering, Southeast University, Nanjing, People's Republic of China.
Abstract:
In the title mol-ecule, C(18)H(12)N(6)S(2), the C-S-S-C torsion angle is 96.12 (9)°. The dihedral angles between the pyridyl and pyrimidinyl rings are 16.7 (1) and 1.27 (9)°. In the crystal, inter-molecular π-π inter-actions between the aromatic rings [centroid-centroid distances = 3.888 (2) and 3.572 (1) Å] link mol-ecules into chains propagating in [011].

